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INTEGRATED CIRCUITS
DATA SHEET
TDA5149G 12 V Voice Coil Motor (VCM) driver and spindle motor pre-driver combination chip
Product specification File under Integrated Circuits, IC11 1996 May 06
Philips Semiconductors
Product specification
12 V Voice Coil Motor (VCM) driver and spindle motor pre-driver combination chip
FEATURES General features * Single-chip voice coil motor driver and spindle motor pre-driver * Internal voltage reference generator * Programming of timing parameters via the serial bus * Control of sleep, brake and disable modes for both the VCM and spindle via the serial bus * Temperature monitor circuit * General purpose uncommitted operational amplifier. Voice coil motor driver * On-board full-bridge power DMOS driver with low RDSon * Class AB linear amplifier with no dead zone * Adjustable gain and bandwidth * Retract circuit operating at power-down. Spindle motor pre-driver * Designed to drive external N-channel power MOSFETs for brushless, sensorless DC motors * Internal or external commutation control * Digital commutation timing * Average motor supply current control with Pulse Width Modulation (PWM) * Soft switching under PWM control * Spindle brake after park at power-down. APPLICATIONS
TDA5149G
* 12 V high-performance hard disk drives. GENERAL DESCRIPTION The TDA5149G is a combination of a voice coil motor driver and a spindle motor pre-driver, capable of operating 12 V high-performance hard disk drives. The device integrates a spindle pre-driver that drives three external N-channel power MOSFETs in order to drive a three-phase brushless, sensorless DC motor in full wave mode. In the normal mode, commutations are generated from the internal Back EMF (BEMF) sensing circuitry. Commutations, however, can also be generated from an external source, thereby providing the possibility of driving the motor in the stepper-motor mode. The VCM driver is a linear transconductance amplifier capable of handling currents up to 1.65 A. It allows external adjustment of the gain and compensation. The TDA5149G also contains two drivers for a latch that secures the heads in the event of power-down. To control functions such as park, brake, sleep or disable and to program the different timing parameters, the TDA5149G is provided with a three-wire serial port. A high precision voltage monitor is also included, for both 5 and 12 V power supplies. Finally, the IC contains a temperature monitor circuit and an uncommitted operational amplifier connected to VDD, which can be used freely within the application. The device is contained in a LQFP64 package with 4 pins connected to the lead frame for improved heat dissipation.
QUICK REFERENCE DATA SYMBOL VDD VDDD VDDA1 IoVCM RDSon PARAMETER general supply voltage (pin 54) digital supply voltage (pin 55) analog supply voltage (pin 27) voice coil motor output current VCM power DMOS total on-resistance (including leads and bond wires) CONDITIONS MIN. 10.8 4.5 4.5 - - - TYP. 12.0 5.0 5.0 - - - MAX. 13.2 5.5 5.5 1.65 0.65 1.1 UNIT V V V A
Tj = 25 C Tj = 125 C
ORDERING INFORMATION TYPE NUMBER TDA5149G PACKAGE NAME LQFP64 DESCRIPTION plastic low profile quad flat package; 64 leads; body 10 x 10 x 1.4 mm VERSION SOT314-2
1996 May 06
2
Philips Semiconductors
Product specification
12 V Voice Coil Motor (VCM) driver and spindle motor pre-driver combination chip
BLOCK DIAGRAMS
TDA5149G
handbook, full pagewidth
VDDD 55 VDDA1 27 to the LATCH DGND AGND 64 16 to the VCM BRAKEDELAY 51 BRAKE DELAY BRAKEPOWER 47 IDRIVE 12 CAPY 1 63 CAPX1 CHARGE PUMP 62 CAPX2 12 V 54 VDD
from the POR circuit
TDA5149G
45 H0 CLOCK 58 CLAMP LHOLD SCLOCK 60 SDATA 59 SENABLE 61 SERIAL PORT LACTIVE VPARK
1
to the VCM
3 H1 DRIVER 5 L1 DRIVER MOT1
VCM_CONT1 2 VCM_CONT2 3 VGAINSEL SLEEP
4 5
COMMUT. DELAYS 6 H2 SBRAKE SDISABLE SPINMODE DIGITAL CONTROL DRIVER 8 L2 DRIVER MOT2
SCANOUT
25
SCANTEST 56
COMMCLOCK INIT
9 H3 FG 57 DRIVER STOSC 24 SAWTOOTH OSCILLATOR TRIGGER DRIVER 11 L3 MOT3
CSS2 dis COMP CSS2 23
1
COMP BEMF comp 1
4 MOT1 3 k
SPWM comp 2 CSS2 short CSS1 dis
2
COMP BEMF comp 2
7 MOT2 3 k 2 MOT0 1 k 10 MOT3 3 k
COMP CSS1 22
SPWM comp 1 CSS1 short LOOP1 select
3
COMP BEMF comp 3
19 ISPIN 0.4 V 13 SPINSENSEH INTG 5x 14 SPINSENSEL Rsense 21 RPOS 20 SICOMP 18 SINTIN 15 SISENS
from the PWM DAC
MGE657
Fig.1 Block diagram of the spindle part.
1996 May 06
3
Philips Semiconductors
Product specification
12 V Voice Coil Motor (VCM) driver and spindle motor pre-driver combination chip
TDA5149G
handbook, full pagewidth
Ccomp R comp
from the serial port
VCM_CONT1 from the POR circuit Rin2 VCMIN2 40 VGAINSEL Rin1 VCMIN1 41 VCMref VCM_CONT2
-
PARK CIRCUITRY OPAMP
30 AMPIN- 31 AMPIN+ 33 AMPOUT 38 CLAMP 32 PGND1 from the spindel
+
brake park disable
VCM input
-
PREAMP FOLLOWER 20 k
36 VCM-
+
39 VDDV 27 Rfb
M
+12 v
100 nF 23 k
-
R PREAMP FOLLOWER
44 VCM+
R8
+
R* 48 PGND2
TDA5149G
50 VCM reference input VCMSENSOUT VCMref Vref(o) 49 46 50 k 10 k 10 k 43 VCMSENSEL 42 VCMSENSEH +5 V Iref 17 REFERENCE CURRENT GENERATOR +12 V LATCH CIRCUITRY 27 100 nF
-
SENSE BUFFER 50 k
+
53 LATCHACTIV latch 52 LATCHHOLD
+12 V
REFERENCE VOLTAGE GENERATOR
LACTIVE LHOLD from the serial port
POR12ADJ 29
-
COMP
+
+5 V
TEMPERATURE SENSOR to the PARK circuit
37 TEMPMON
+
POR5ADJ 28 COMP
-
POWERON RESET GENERATOR
26 PORDELAY
35 RESETA
34 RESETP
MGE656
Fig.2 Block diagram of the VCM and RESET circuits.
1996 May 06
4
Philips Semiconductors
Product specification
12 V Voice Coil Motor (VCM) driver and spindle motor pre-driver combination chip
PINNING SYMBOL CAPY MOT0 H1 MOT1 L1 H2 MOT2 L2 H3 MOT3 L3 IDRIVE SPINSENSEH SPINSENSEL SISENS AGND Iref SINTIN ISPIN SICOMP RPOS CSS1 CSS2 STOSC SCANOUT PORDELAY VDDA1 POR5ADJ POR12ADJ AMPIN- AMPIN+ PGND1 AMPOUT RESETP RESETA VCM- TEMPMON CLAMP VDDV VCMIN2 1996 May 06 PIN 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 I/O I/O I O I O O I O O I O I I I O - O I I O I I/O I/O I/O O I/O - O O I I - O O O O O I/O - I charge pump capacitor motor centre tap input driver output to gate of upper power FET 1 back EMF comparator input 1 driver output to gate of lower power FET 1 driver output to gate of upper power FET 2 back EMF comparator input 2 driver output to gate of lower power FET 2 driver output to gate of upper power FET 3 back EMF comparator input 3 driver output to gate of lower power FET 3 adjustment for output stage drive current positive spindle sense amplifier input negative spindle sense amplifier input spindle sense amplifier output general analog ground; note 1 reference current generator output negative integrator input positive integrator input, average current adjustment integrator output duty cycle modulator input soft switching capacitor 1 soft switching capacitor 2 sawtooth oscillator capacitor test output power-on reset delay capacitor (active LOW) analog supply voltage 1 (+5 V) adjustment of POR threshold (for +5 V) adjustment of POR threshold (for +12 V) negative input of the uncommitted operational amplifier positive input of the uncommitted operational amplifier power ground 1 for VCM DMOS; note 1 uncommitted operational amplifier output power-on reset digital output with passive pull-up resistor power-on reset digital output with active pull-up resistor negative output voltage of the VCM power stage temperature monitor output clamp capacitor used for head retraction power supply for VCM DMOS driver (+12 V) switchable VCM control input voltage 5 DESCRIPTION
TDA5149G
Philips Semiconductors
Product specification
12 V Voice Coil Motor (VCM) driver and spindle motor pre-driver combination chip
SYMBOL VCMIN1 VCMSENSEH VCMSENSEL VCM+ H0 VCMref BRAKEPOWER PGND2 Vref(o) VCMSENSOUT BRAKEDELAY LATCHHOLD LATCHACTIV VDD VDDD SCANTEST FG CLOCK SDATA SCLOCK SENABLE CAPX2 CAPX1 DGND Note 1. The 4 ground pins are tied to the lead frame for better heat dissipation. PIN 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 I/O I I I O O I I/O - O O I/O O O - - I O I I I I I/O I/O - VCM control input voltage positive VCM sense amplifier input voltage negative VCM sense amplifier input voltage positive output voltage of the VCM power stage gate control of the isolating power FET reference voltage input for the VCM reservoir capacitor for the brake/park circuitry power ground 2 for VCM DMOS; note 1 reference voltage generator output VCM sense amplifier output voltage powerless brake delay adjustment latch hold output latch activate output general supply voltage (+12 V) digital supply voltage (+5 V) test mode input commutation frequency generator output clock for digital timing input serial port data input serial port clock input serial port enable input charge pump capacitor input/output charge pump capacitor input/output digital ground; note 1 DESCRIPTION
TDA5149G
1996 May 06
6
Philips Semiconductors
Product specification
12 V Voice Coil Motor (VCM) driver and spindle motor pre-driver combination chip
TDA5149G
53 LATCHACTIV
52 LATCHHOLD
handbook, full pagewidth
50 VCMSENSOUT
56 SCANTEST
61 SENABLE
60 SCLOCK
58 CLOCK
59 SDATA
63 CAPX1
62 CAPX2
51 BRAKEDELAY
CAPY MOT0 H1 MOT1 L1 H2 MOT2 L2 H3 MOT3 L3 IDRIVE SPINSENSEH SPINSENSEL SISENS AGDN
49 Vref(o) 48 PGND2 47 BRAKEPOWER 46 VCMref 45 H0 44 VCM+ 43 VCMSENSEL 42 VCMSENSEH 41 VCMIN1 40 VCMIN2 39 VDDV 38 CLAMP 37 TEMPMON 36 VCM- 35 RESETA 34 RESETP 33 AMPOUT 32
MGE654
64 DGND
55 VDDD 26
1 2 3 4 5 6 7 8
TDA5149G
9 10 11 12 13 14 15 16 20 21 22 23 STOSC 24 25 27 28 29 AMPIN- 30 Iref 17 SINTIN 18 ISPIN 19 31 AMPIN+
54 VDD
57 FG
SICOMP
SCANOUT
PORDELAY
Fig.3 Pin configuration.
1996 May 06
7
POR12ADJ
POR5ADJ
PGND1
RPOS
CSS1
CSS2
VDDA1
Philips Semiconductors
Product specification
12 V Voice Coil Motor (VCM) driver and spindle motor pre-driver combination chip
FUNCTIONAL DESCRIPTION Spindle The spindle section contains both the low and high side pre-drivers for a three phase DC brushless motor. The digital commutation control, using the timing information provided via the serial port, is responsible for the proper switch-on and switch-off of the external power FETs. It is also responsible for selecting the correct BEMF comparator. For optimum power efficiency, a continuous PWM method is used to control the average current from the power supply to the motor coils. This PWM mode, by controlling the average power supply current, produces a lower torque ripple and thus lower audible noise. In order to reduce further acoustic noise the TDA5149G is provided with a soft switching circuit to turn-on and turn-off linearly the switching current under PWM control. The switching transition time is controlled by the digital commutation circuit and is fixed to 50% of the time between two zero-crossings, i.e. 30 of the electrical revolution. Soft switching is achieved by activating, during commutation, a free-running duty-cycle modulator controlled by a linearly decreasing voltage across a capacitor. This will reduce the current smoothly in the off-going leg to zero. In conjunction with this additional PWM open loop, the average current control regulates the sum of the current in the off-going and on-going leg. This method requires two PWM control loops; one to control the average current (main loop) and one to control the current in the off-going leg. The swapping of the two loops is realized with a pair of analog switches that are sequentially switched by the digital commutation circuitry. The PWM control also causes PWM pulses on the back EMF. These pulses disturb correct sensing of the back EMF for the zero-crossing detection. Consequently, edge-triggered latches are inserted behind the back EMF comparators, thus ensuring reliable back EMF sensing. In the SPINMODE, programmable via the serial bus, the user can feed their own commutation pulses to the pre-drivers and control the motor in the stepper-motor mode. The commutation pulses are applied to the TDA5149G via the serial bus by setting the COMMCLK bit successively to logic 1 and logic 0.
TDA5149G
The different control modes of the TDA5149G can be commanded via the serial bus. These modes are as follows: * Sleep mode: all analog circuits, except the power supply monitor, are switched off to reduce the power consumption of both the 12 and 5 V supplies. * Disable mode: the output voltage of all pre-drivers is LOW thus the external power MOSFETs are not conducting. * Brake mode: all low side pre-drivers are turned on (output voltage HIGH) thus switching on the low-side power MOSFETs. In this way the back EMF voltage of the motor is short-circuited to ground. Voice coil motor The VCM is a linear, symmetrical, class AB, H-bridge type power amplifier with all power devices on-chip. The driver is a transconductance amplifier that controls the output currents up to 1.65 A. The driver is constructed in a master-slave configuration with the zero current level internally adjusted in such a way that it corresponds to the middle of the output swing. Moreover, the gain of the slave has been made greater than 1 in order to ensure full saturation of the driver output VCM+. The gain of the closed loop is programmable, using the VGAINSEL bit. This bit can be programmed via the serial bus. A sense resistor (Rs) allows the measurement of the VCM current. The voltage across this resistor is connected to an accurate sense amplifier with a typical gain of 5. The output of the sense amplifier (VCMSENSOUT) is fed back to the input of the VCM amplifier. Because of the symmetry of the circuit, the compensation network can be connected between the VCM1 input and the VCM- output. Control modes such as VCM-BRAKE, VCM-DISABLE and VCM-PARK can be controlled via the serial bus. Latch drivers The TDA5149G provides the possibility of driving an external latch to secure the VCM heads. There are two modes; the activate mode (LACTIVE) and the hold mode (LHOLD). The hold mode is used to preserve power. Both modes are controlled via the serial bus. The drivers are switched off during the SLEEP mode or in the event of a power-down.
1996 May 06
8
Philips Semiconductors
Product specification
12 V Voice Coil Motor (VCM) driver and spindle motor pre-driver combination chip
Power-on/power-off reset The power-on reset circuitry monitors the analog, digital and general supplies. The voltage thresholds have been set internally for both supplies, i.e. 4.4 V for VDDA and VDDD, and 10.5 V for VDD. External adjustment and filtering, to suppress supply spikes, has been made possible through the pins POR5ADJ and POR12ADJ. When either of the supplies falls below their threshold levels, the reset circuit provides two active LOW output signals. The RESETA signal is a full CMOS output and the RESETP signal has an active pull-down MOS transistor with a passive pull-up resistance of 10 k. The latter can be used for emulation purposes. Both signals remain LOW until the supply voltages are again above the threshold level, delayed by a time constant period that is determined by the value of the capacitor connected to pin PORDELAY. A park sequence is initiated on a reset fault. This includes disabling the actuator latch drivers and starting a delayed spindle brake operation by switching on the low side pre-drivers simultaneously. This brake delay is determined by an external RC combination connected to BRAKEDELAY. Actuator PARK and spindle BRAKE can also be controlled via the serial port. At power-up, the two reset output signals (RESETA and RESETP) will remain LOW as long as either supply voltage is below the specified threshold plus the hysteresis voltage. Once the supply voltages are above their specific trip levels, the two reset signals become HIGH after the power-on reset delay (PORDELAY). This delay time is determined by the value of the capacitor connected to the PORDELAY pin. Powerless park/brake As with the normal retract procedure, an actuator park sequence is initiated whenever a power-down situation occurs. The power-on/power-off reset circuit generates the two active LOW reset signals and also activates the VCM park circuit. The VCM park circuit provides a voltage, retrieved from the rectified back EMF voltage of the running-out spindle, of 1.2 V (typ.) to the VCM pin. The voltage at pin VCM+ is 0 V. This voltage is supplied by the capacitor CCLAMP that is connected to the CLAMP pin. This capacitor smooths the rectified back EMF and stores the electrical energy generated by the motor.
TDA5149G
To ensure that the stored energy in the clamp capacitor is only used for the park operation, the CLAMP input must be isolated from the power supply. This can be achieved by using a Schottky diode or a reverse connected N-channel power FET (see Fig.1). The TDA5149G provides an output H0 to control this power FET. At power-down the brake delay circuit is also enabled. The brake delay circuit is supplied by the energy stored in the capacitor (charged during normal operation from VDD) that is connected to the BRAKEPOWER pin. Both the BRAKEDELAY and BRAKEPOWER pins are then isolated from the 12 V supply voltage. When the voltage on the BRAKEDELAY pin reaches a value of 1.6 V (typ.), the low-side external power FETs are turned on to brake the spindle motor. The BRAKEPOWER capacitor then supplies the current to keep the power FETs conducting. This means that the voltage on this capacitor decreases with time. Serial port The serial port is used to modify the various operational modes of the TDA5149G and to adjust the timing parameters to ensure the proper commutation sequence of the spindle motor. It is a synchronous, slave only, three-wire communication port with data (SDATA), clock (SCLOCK) and enable (SENABLE) inputs. The serial port requires the data to be sent in bytes, the LSB (data 0) to be sent first and the MSB (address 2) last. The three most significant bits (MSBs) determine the register address, the remaining five bits represent the data, which means up to 8 registers can be independently addressed. When SENABLE is LOW, the serial port is disabled and the IC is not affected by any change both on SDATA and SCLOCK. When SENABLE is HIGH the data is written serially to the shift register on the rising edge of SCLOCK. When SENABLE goes LOW the shifting sequence is stopped and the last 8 bits that are clocked in are latched into the appropriate control register. Therefore, the transmission of two consecutive bytes requires that SENABLE is LOW for at least a duration of `t' (see Chapter "Characteristics").
1996 May 06
9
Philips Semiconductors
Product specification
12 V Voice Coil Motor (VCM) driver and spindle motor pre-driver combination chip
TDA5149G
handbook, full pagewidth
VCC
Vhys
MBH021
threshold
0.8 V t
POR
tC
tC
t
Fig.4 Power-on/power-off reset timing.
handbook, full pagewidth
SCLOCK tsu1 SENABLE tsu2 th2 SDATA
MGE655
th1
tpm
tsu1
tsu2 th2
Fig.5 Serial port signal timing
1996 May 06
10
Philips Semiconductors
Product specification
12 V Voice Coil Motor (VCM) driver and spindle motor pre-driver combination chip
Table 1 Serial port registers DATA4 INIT not used not used not used STARTUP_4 WATCHDOG_4 not used BLANK_4 DATA3 COMMCLCK HARD_SW not used not used STARTUP_3 WATCHDOG_3 not used BLANK_3 DATA2 SPINMODE LHOLD VGAINSEL PRESCALER_2 STARTUP_2 WATCHDOG_2 COMDELIM_2 BLANK_2 DATA1 SDISABLE LACTIVATE VCM_CTRL_1 PRESCALER_1 STARTUP_1 WATCHDOG_1 COMDELIM_1 BLANK_1
TDA5149G
REGISTER ADDRESSED Reg # 0 Reg # 1 Reg # 2 Reg # 3 Reg # 4 Reg # 5 Reg # 6 Reg # 7 Table 2
DATA0 SBRAKE SLEEP VCM_CTRL_0 PRESCALER_0 STARTUP_0 WATCHDOG_0 COMDELIM_0 BLANK_0
REG # 0: address 000; DATA = | INIT | COMMCLK | SPINMODE | SDISABLE | SBRAKE | RESET STATE 1 0 0 1 0 DESCRIPTION initializes the three bits commutation shift register in state 1 (see Table 13) commutation clock in stepper mode (one commutation every LOW-to-HIGH transition) stepper/BEMF detection mode selection. SPINMODE = 1 means stepper motor mode in hard-switching configuration logic 1 sets the pre-drivers outputs LOW so that the spindle motor coils are in the high-impedance state logic 1 sets the lower pre-driver outputs HIGH and the upper pre-driver outputs LOW so that the spindle motor coils are shorted to ground
DATA BIT INIT COMMCLK SPINMODE SDISABLE SBRAKE
Table 3
REG # 1: address 001; | not used | HARD_SW | LHOLD | LACTIVE | SLEEP | RESET STATE 0 0 0 0 DESCRIPTION logic 1 disables the soft switching circuitry, which means PWM is applied on the lower FETs only.This mode is also forced in stepper motor mode. logic 1 turns on the hold current supplied by VDDD through the latch. It is ignored if LACTIVE = 1 logic 1 turns on the activate current supplied by VDD through the latch logic 1 disables spindle, VCM and latch driver outputs. The whole analog circuitry is turned off except the reference bandgap and the voltage monitors. The uncommitted operational amplifier is also cut off.
DATA BIT HARD_SW LHOLD LACTIVE SLEEP
Table 4
REG # 2: address 010; | not used | not used | VGAINSEL | VCM_CTRL_1 | VCM_CTRL_0 | RESET STATE 1 1 1 DESCRIPTION logic 1 turns on the switch between VCMIN1 and VCMIN2, resulting in a higher gain for the transconductance of the VCM closed loop see Table 5 see Table 5
DATA BIT VGAINSEL VCM_CTRL_1 VCM_CTRL_0
1996 May 06
11
Philips Semiconductors
Product specification
12 V Voice Coil Motor (VCM) driver and spindle motor pre-driver combination chip
Table 5 Operating conditions for VCM_CTRL_1 and VCM_CTRL_0 VCM_CTRL_1 0 0 1 1 Table 6 VCM_CTRL_0 0 1 0 1
TDA5149G
MODE VCM operating VCM brake VCM park VCM disable
REG # 3: address 011; | not used | not used | PRESCALER_REG [2 to 0] RESET STATE 0 1 0 DESCRIPTION(1) sets the division factor that is applied to the external clock (pin 58) in order to obtain the appropriate internal clock frequency for the proper determination of the commutation delays. The prescaling factors can be obtained as shown in Table 7
DATA BIT PRESCALER_2 PRESCALER_1 PRESCALER_0 Note
1. CLOCK (pin 58) must be valid before the end of the POR delay. Table 7 Prescaler factors PRESCALER_REG 000 001 010 011 100 101 110 111 Note 1. Internal clock frequency is equal to external clock frequency divided by prescaler ratio. Table 8 REG # 4: address 100; | STARTUP_REG[4 to 0] | RESET STATE 0 0 0 0 0 DESCRIPTION The start-up timer instigates the spin-up in the absence of the back EMF zero crossings. If the rotational speed is high enough, the commutations are sequenced regardless of the start-up counter. But if no BEMF zero crossing occurs, which is the case if the motor is stationary or rotating very slowly, the start-up timer reaches its terminal count given by the STARTUP_REG, thereby causing the next commutation. If tIC is the period of the internal clock then; STARTUP delay = [(({0 to 31} x 32) + 2) x 511) + 2] x tIC FREQUENCY (MHz)(1) 1 2 4 8 16 32 64 128
DATA BIT STARTUP_4 STARTUP_3 STARTUP_2 STARTUP_1 STARTUP_0
1996 May 06
12
Philips Semiconductors
Product specification
12 V Voice Coil Motor (VCM) driver and spindle motor pre-driver combination chip
Table 9 REG # 4: address 101; | WATCHDOG_REG[4 to 0] | RESET STATE 0 0 0 0 0 DESCRIPTION
TDA5149G
DATA BIT WATCHDOG_4 WATCHDOG_3 WATCHDOG_2 WATCHDOG_1 WATCHDOG_0
The watchdog timer checks for correct back EMF polarity, which indicates correct rotation of the motor WATCHDOG delay = [ ( { 0 to 31 } x 64 ) + 1 ] x t IC
Table 10 REG # 6: address 110; | not used | not used | COMDELIM_REG[2 to 0] | DATA BIT COMDELIM_2 COMDELIM_1 COMDELIM_0 RESET STATE 0 0 0 DESCRIPTION Defines the maximum commutation delay limit by setting the saturation value of the zero crossing counter. tIC represents the period of the internal clock. Table 11 shows the delays which can be obtained.
Table 11 Commutation delay limit COMDELIM_REG 111 110; note 1 101 100; note 1 011 010; note 1 001 000; note 1 Note 1. Even COMDELIM _REG values must be avoided. Table 12 REG # 7: address 111; | BLANK_REG[4 to 0] | DATA BIT BLANK_4 BLANK_3 BLANK_2 BLANK_1 BLANK_0 RESET STATE 0 0 0 0 0 DESCRIPTION In the hard switching mode, the blank delay inhibits the back EMF comparator outputs just at the moment the MOT outputs are commutating, until they have been stabilized again. To avoid false zero-crossing detection, the blank delay operates in the same way at the end of the fly-back pulse (hard-switching mode), or at the end of the soft-switching interval (soft-switching mode). BLANK delay = [ ( { 0 to 31 } x 4 ) + 1 ] x t IC COUNTER SATURATION VALUE 2047 1535 1023 767 511 383 255 191 MAXIMUM COMMUTATION DELAY tIC x 1023 tIC x 767 tIC x 511 tIC x 383 tIC x 255 tIC x 191 tIC x 127 tIC x 95
1996 May 06
13
Philips Semiconductors
Product specification
12 V Voice Coil Motor (VCM) driver and spindle motor pre-driver combination chip
Table 13 Configuration of the six commutation states in hard-switching mode STATE 1(3) 2 3 4 5 6 Note 1. H1, H2 and H3 are the upper power FETs connected to MOT1, MOT2 and MOT3 respectively. 2. L1, L2 and L3 are the lower power FETs connected to MOT1, MOT2 and MOT3 respectively. 3. INIT = 1 means `state 1' situation with PWM stuck in OFF on L2. LIMITING VALUES In accordance with the Absolute Maximum Rating System (IEC 134). SYMBOL VDD VDDD VDDA VDDV VCM+ VCM- ICM+ ICM- VMOT Vn Tstg Tj(max) PARAMETER general supply voltage digital supply voltage analog supply voltage supply for VCM DMOS driver output voltage of the VCM power stage output voltage of the VCM power stage output current of the VCM power stage output current of the VCM power stage BEMF comparator input voltage (pins 4, 7 and 10) input voltages on other pins IC storage temperature maximum junction temperature current peak <0.5 s current peak <0.5 s CONDITIONS indefinite time period indefinite time period indefinite time period indefinite time period MIN. -0.3 -0.3 -0.3 -0.3 -0.3 -0.3 -0.3 -0.3 -0.7 -0.7 - - -0.7 -0.3 -55 - SHIFT REGISTER 111 011 001 000 100 110 H1(1) ON ON - - - - H2(1) - - ON ON - - H3(1) - - - - ON ON L1(2) - - - PWM PWM -
TDA5149G
L2(2) PWM - - - - PWM
L3(2) - PWM PWM - - -
MAX. +13.5 +15 +6.0 +7.0 +6.0 +7.0 +13.5 +15 +15 +15 2.5 2.5 - - +125 150 V V V V V V V V V V A A V V C C
UNIT
1996 May 06
14
Philips Semiconductors
Product specification
12 V Voice Coil Motor (VCM) driver and spindle motor pre-driver combination chip
HANDLING
TDA5149G
Inputs and outputs are protected against electrostatic discharge in normal handling. However, to be totally safe, it is desirable to take normal precautions appropriate to handling MOS devices. ESD according to MIL STD 883C - method 3015 (HBM 1500 , 100 pF) 3 pulses positive and 3 pulses negative on each pin versus ground - Class 1: 0 to 1999 V. THERMAL CHARACTERISTICS SYMBOL Rth j-a Note 1. This is obtained in a standard PCB: standard PCB size: 100 mm x 75 mm x 1.6 mm; material = glass epoxy FR4, single copper layer. With dedicated PCB tailored to heat dissipation, the thermal resistance could be as low as 40 K/W. OPERATING CHARACTERISTICS SYMBOL Temperature Tamb VDDA VDDD IDD IDDA VDDV operating ambient temperature -5 - +70 C PARAMETER CONDITIONS MIN. TYP. MAX. UNIT PARAMETER(1) thermal resistance from junction to ambient in free air VALUE 54 UNIT K/W
Supplies: pins 27, 55, 54 and 39 analog supply voltage digital supply voltage general supply voltage analog supply current supply voltage for VCM DMOS driver normal mode 4.5 4.5 10.8 - 10.8 5.0 5.0 12.0 5.5 12.0 5.5 5.5 13.2 7.5 13.2 V V V mA V
VCM reference voltage: pin 46 (VCMref) VCMref CCAPX CCAPY CCLAMP CBP RSSENS RVSENS reference voltage input level 1.9 - 4.0 V
Charge pump: pin 1 (CAPY) charge pump capacitor charge pump capacitor between CAPX1 and CAPX2 between CAPY and ground 6.8 16 - - 10 22 13 30 - - - - nF nF F F
CLAMP: pin 38 clamp capacitance between CLAMP and ground 47
BRAKEPOWER: pin 47 brakepower capacitance note 1 47 - -
Sense resistors spindle sense resistor VCM sense resistor 0.15 0.15
1996 May 06
15
Philips Semiconductors
Product specification
12 V Voice Coil Motor (VCM) driver and spindle motor pre-driver combination chip
SYMBOL PARAMETER CONDITIONS MIN. - TYP.
TDA5149G
MAX.
UNIT
Spindle pre-drivers: pin 12 (IDRIVE) RIDRIVE resistance for pre-driver current adjustment 32 470 k
Reference current: pin 17 (Iref) RIref resistance for reference current adjustment 47 - 470 k
Sawtooth oscillator: pin 24 (STOSC) CSO sawtooth oscillator capacitance note 2 150 - - 700 - - 0.8 pF
Power-on reset: pin 26 (PORDELAY) CPORDELAY VIH VIL Notes 1. To guarantee a powerless brake duration of at least 10 s. A low leakage capacitor must be used (<0.1 A). 2. For a frequency range of 25 to 100 kHz. CSTOSC = 0.775 (Iref/fPWM). 3. For a RESETA/RESETP pulse duration of approximately 100 ms. CHARACTERISTICS VDD = 12 V; VDDA = VDDD = 5 V; Tamb = 25 C; unless otherwise specified. SYMBOL PARAMETER CONDITIONS - - - - - - 2.47 MIN. TYP. MAX. UNIT PORDELAY capacitance HIGH level input voltage LOW level input voltage note 3 100 - - nF
Digital inputs for the serial port: pins 58 to 61 (CLOCK, SDATA, SCLOCK and SENABLE) 2.4 - V V
Supplies: pins 27, 55 and 54 IDDA IDDD IDD analog supply current digital supply current general supply current normal mode sleep mode normal mode sleep mode normal mode sleep mode VOLTAGE REFERENCE: PIN 49 (Vref(o)) Vref(o) reference voltage generator output Iref(o) = 1 mA 2.57 2.67 V 5.5 1.6 5.5 1.6 12 2.9 7.5 2.0 7.5 2.0 17 4.0 mA mA mA mA mA mA
CURRENT REFERENCE: PIN 17 (Iref(o)) Iref(o) reference current generator output Rref = 120 k; note 1 20.6 21.4 22.2 A
TEMPERATURE MONITOR: PIN 37 (TEMPMON) VOLT VOHT output voltage at LOW temperature output voltage at HIGH temperature Tj = 25 C Tj = 150 C; note 2 2.15 3.03 2.17 3.055 2.19 3.08 V V
1996 May 06
16
Philips Semiconductors
Product specification
12 V Voice Coil Motor (VCM) driver and spindle motor pre-driver combination chip
SYMBOL PARAMETER CONDITIONS MIN. -250 TYP. -
TDA5149G
MAX.
UNIT A
VCM REFERENCE: PIN 46 (VCMref) Ii input current VVCMref = 2 V; note 3 +60 Spindle: pre-drivers CHARGE PUMP: PIN 1 (CAPY) VCP Vripple(p-p) charge pump DC voltage voltage ripple (peak-to-peak value) ICAPY < 1 mA ICAPY = 1 mA 18.5 - 19.3 - 19.8 0.8 V V
BACK EMF COMPARATORS: PINS 2, 4, 7 AND 10 (MOT0, MOT1, MOT2 AND MOT3) ViCM Ibias VSWhys common mode input voltage input bias current switching level for hysteresis note 4 MOT0 for negative transition with respect to MOT0 for positive transition with respect to MOT0 VCSW Vi(hys) VOH Isource Isink SR variation in comparator switching levels for one IC input voltage hysteresis IOH = -0.5 mA -0.7 -10 -13 7 -4.2 - 7.2 1.2 RIDRIVE = 120 k; note 6 - IOH = -0.5 mA 18.0 1.3 RIDRIVE = 120 k; note 6 - normal condition 18.3 - - - - - 0.5 VDD + 0.7 0 -7 13 +4.2 - 8.8 -0.5 2.0 - 19.6 -0.7 2.2 - 20 V A mV mV mV mV
SPINDLE LOWER PRE-DRIVERS: PINS 5, 8 AND 11 (L1, L2 AND L3) HIGH level output voltage output source current output sink current slew rate 8.0 -0.7 1.6 10 V mA mA V/s RIDRIVE = 120 k; note 5 -0.9
SPINDLE UPPER PRE-DRIVERS: PINS 3, 6 AND 9 (H1, H2 AND H3) VOH Isource Isink SR H0: PIN 45 Vo IrefSP output voltage 18.8 V A HIGH level output voltage output source current output sink current slew rate 18.8 -1.0 1.75 10 V mA mA V/s RIDRIVE = 120 k; note 7 -1.3
OUTPUT CURRENT ADJUSTMENT: PIN 12 (IDRIVE) spindle pre-driver reference current RIDRIVE = 120 k; note 7 20.6 21.4 22.2
Spindle: PWM SPINDLE SENSE AMPLIFIER: PINS 13 AND 14 (SPINSENSEH AND SPINSENSEL) Vi Isense+ differential input voltage positive input sense current 0 -60 - -51 1.84 -42 V A
1996 May 06
17
Philips Semiconductors
Product specification
12 V Voice Coil Motor (VCM) driver and spindle motor pre-driver combination chip
SYMBOL SISENS: PIN 15 Vo Vo GS fUG ViCM Vi(os) Ii VOL VOH SR fUG Vdc Isink(d) output voltage shift output voltage level spindle sense amplifier gain unity gain bandwidth 1.38 1.37 4.85 1 1.43 - 5.0 - - - - - - 0.9 - - 21.0 PARAMETER CONDITIONS MIN. TYP.
TDA5149G
MAX.
UNIT
1.48 VDD - 1.2 5.15 - 3.2 +3.0 0
V V V/V MHz
SPINDLE CURRENT LOOP FILTER AMPLIFIER: PINS 18 AND 19 (SINTIN AND ISPIN) common mode input voltage input offset voltage input current 1.3 -3.0 -1 IOL = 1 mA IOH = -0.6 mA - 3.5 0.5 1 - 20.2 V mV A V V V/s MHz
SICOMP: PIN 20 LOW level output voltage HIGH level output voltage slew rate unity gain bandwidth 0.5 - 1.5 - 0.45 21.8
SPINDLE PWM COMPARATORS: PINS 22 AND 23 (CSS1 AND CSS2) discharge clamp voltage sink current ICSS1,2 = 0.5 mA for normal CSS1 and CSS2 discharge; RIref = 120 k for CSS1 and CSS2 short V A
Isink(s)
sink current
1
-
-
mA
ANALOG SWITCHES: PIN 21 (RPOS) RSon RSoff VSUL VSLL Isource Isink switch-on resistance switch-off resistance 150 10 250 - 3.0 0.55 -42.8 800 400 - 3.1 0.57 -41.2 1100 M
SAWTOOTH OSCILLATOR: PIN 24 (STOSC) voltage swing upper limit voltage swing lower limit source current sink current static test note 8 note 9 2.9 0.53 -44.4 500 V V A A
Voice coil motor driver VCM PREAMPLIFIERS: PINS 41 AND 40 (VCMIN1 AND VCMIN2) Ii Vi(os) fUG GRSon GRSoff input current input offset voltage unity gain bandwidth gain switch-on resistance gain switch-off resistance VGAINSEL = 1 VGAINSEL = 0 -10 -6 - - 10 - - 3 - - +10 +6 - 60 - A mV MHz M
1996 May 06
18
Philips Semiconductors
Product specification
12 V Voice Coil Motor (VCM) driver and spindle motor pre-driver combination chip
SYMBOL PARAMETER CONDITIONS - 1.12 Io = 1 A; Tj = 25 C Io = 0.2 A Io = 1 A; Tj = 150 C - - - - 1.4 1.5 over full temperature range 0.9 MIN. TYP.
TDA5149G
MAX.
UNIT s V/V V V V s V/s MHz V
VCM DRIVER AMPLIFIERS: PINS 44 AND 36 (VCM+ AND VCM-) tCOD GvSD VOD cross-over switch time slave driver voltage gain output drop voltage including bond wires and leads recovery time from saturation output slew rate unity gain bandwidth park voltage 2 1.15 - - - - 2.0 3 1.2 5 1.18 0.65 0.45 1.1 100 - - 1.4
tRFS SR fUG Vpark
VCM SENSE AMPLIFIER: PINS 43 AND 42 (VCMSENSEL AND VCMSENSEH) VI II input voltage range input current common mode from 0 to 12 V -0.7 -60 - - VDD + 0.7 +250 V A
VCMSENSOUT: PIN 50 VOSL VOSH Gs fUG Vo(os) GCM LOW level output saturation voltage HIGH level output saturation voltage sense amplifier gain unity gain bandwidth output offset voltage common mode gain VCMSENSEH = 6 V; VCMSENSEL = 6 V IOL = 0.4 mA IOH = -0.4 mA VDD - 1.5 4.85 - -23 - - - 5.0 1 - - 0.5 - 5.15 - +23 -50 V V V/V MHz mV dB
Latch drivers LATCHACTIV: PIN 53 Isource RDSon RDSon/T output source current FET switch-on resistance FET switch-on resistance temperature variation over full temperature range Tj = 25 C; Isource = -0.5 A -0.5 - - - - 6.4 - 1.2 - A m/C
LATCHHOLD: PIN 52 Isource VDO VDO Ron Ron output source current diode drop voltage diode drop voltage temperature variation total on-resistance total on-resistance temperature variation Tj = 25 C Tj = 25 C, ID = 1 mA -0.1 - - - - - 750 -2 8 40 - 775 - 12 - A mV mV/C m/C
1996 May 06
19
Philips Semiconductors
Product specification
12 V Voice Coil Motor (VCM) driver and spindle motor pre-driver combination chip
SYMBOL PARAMETER CONDITIONS MIN. TYP.
TDA5149G
MAX.
UNIT
Uncommitted operational amplifier AMPIN- AND AMPIN+: PINS 30 AND 31 Vi(os) Ii(bias) VCM GOL fco PSRR VOH VOL SR Brake delay BRAKEPOWER: PIN 47 VNM Isink normal mode voltage input sink current VDD - 0.85 prior to automatic brake; - VBRAKEPOWER = 9 V while braking; over full temperature range; VBRAKEPOWER = 6.5 V VBV VD brakepower voltage for proper brake operation drop voltage between brake power and L1, L2 and L3 VBRAKEPOWER = 6.5 V - - 35 0.6 - 50 2 V A A input offset voltage input bias current common mode voltage -3.5 -1 0 - CL = 10 pF IOH = -0.5 mA IOL = 0.5 mA - 60 VDDD + 0.3 - - - - - 67 1.5 - - - 1.0 +3.5 0 VDD - 1.6 - - - - 0.3 - mV A V
AMPOUT: PIN 33 open loop gain cross-over frequency power supply rejection ratio HIGH level output voltage LOW level output voltage slew rate dB MHz dB V V V/S
5.0 -
- -
- 0.8
V V
BRAKEDELAY: PIN 51 VNM Vtrip ILI normal mode voltage trip level voltage for automatic over full temperature brake range; note 10 leakage current over full temperature range VDD - 0.85 1.4 -200 - 1.7 - - 2.0 +200 V V nA
1996 May 06
20
Philips Semiconductors
Product specification
12 V Voice Coil Motor (VCM) driver and spindle motor pre-driver combination chip
SYMBOL PARAMETER CONDITIONS MIN. TYP.
TDA5149G
MAX.
UNIT
Power-on/power-off reset UNDER THRESHOLD COMPARATORS: PINS 29 AND 28 (POR12ADJ AND POR5ADJ) VPORTH5 VDDDhys VPORTH12 VDDhys RPOR5low RPOR5low RRup/Rlo RPOR12low RPOR12low RRup/Rlo 5 V threshold voltage for power-on/power-off detection hysteresis on VDDD comparator 12 V threshold voltage for power-on/power-off detection hysteresis on VDD comparator POR5ADJ lower resistance POR5ADJ lower resistance temperature variation POR5ADJ resistance ratio POR12ADJ lower resistance POR12ADJ lower resistance temperature variation POR12ADJ resistance ratio over full temperature range over full temperature range Tj = 25 C Tj = 25 C 4.30 30 10.25 60 25340 - 0.715 10560 - 3.07 4.37 55 10.4 95 66 0.725 4.50 80 10.75 130 - 0.735 V mV V mV /C - /C -
28800 32260
12000 13440 27 3.11 - 3.15
POWER-ON/POWER-OFF DELAY GENERATOR: PIN 26 (PORDELAY) Isource VHT VLT VOL Rpu source current RESET output threshold voltage LOW threshold voltage note 11 -2.4 2.51 - IOL = 3 mA over full temperature range IOH = -1.5 mA IOL = 3 mA - 6 -2.2 2.57 - - 10 -1.8 2.63 0.4 A V V
RESETP: PIN 34 LOW level output voltage pull up resistor 0.4 14 V k
RESETA: PIN 35 VOH VOL HIGH level output voltage LOW level output voltage VDDD - 0.7 - - - 0.4 V V
Digital control CLOCK: PIN 58 fclk FG: PIN 57 VOH VOL HIGH level output voltage LOW level output voltage IOH = -0.15 mA IOL = 0.10 mA VDDD - 0.7 - - - - 0.4 V V clock frequency duty factor - 40 - 50 12 60 MHz %
1996 May 06
21
Philips Semiconductors
Product specification
12 V Voice Coil Motor (VCM) driver and spindle motor pre-driver combination chip
SYMBOL Serial port SENABLE: PIN 61 tsu th tpm set-up time hold time time between 2 serial port commands tIC = internal clock cycle; note 12 with respect to the rising 46 edge 19 2tIC - - - - - - PARAMETER CONDITIONS MIN. TYP.
TDA5149G
MAX.
UNIT
ns ns s
SDATA: PIN 59 tsu th fSCL Notes 1. V ref ( o ) I ref = ----------------R Iref set-up time hold time with respect to the rising 22 edge 20 - 30 - - - 50 - - 10 70 ns ns
SCLOCK: PIN 60 clock frequency duty factor MHz %
2. Corresponds to an averaged variation of 7 mV/C. 3. Including the VCMSENSE amplifier input current. 4. Extended voltages are allowed if series resistors are used (see Fig.1). 5. The gain between the pre-driver output current and the IDRIVE current is typically; lower source = 35, upper source = 50, lower sink = 75 and upper sink = 80. 6. Typical value for external FET such as PHN210. V ref ( o ) 7. I I SPREF = -------------------R IDRIVE V ref ( o ) 8. I I source = 2 x ----------------R Iref 9. Valid if the STOSC capacitance is in the nominal range of 150 to 700 pF. 10. tBRAKEDELAY 2RC. 11. tPORDELAY CPORDELAY, with CPORDELAY in F. 12. Master clock (pin 58) must be running (1 cycle = Tec) - tIC = Tecx (prescaler ratio).
1996 May 06
22
Philips Semiconductors
Product specification
12 V Voice Coil Motor (VCM) driver and spindle motor pre-driver combination chip
PACKAGE OUTLINE LQFP64: plastic low profile quad flat package; 64 leads; body 10 x 10 x 1.4 mm
TDA5149G
SOT314-2
c
y X A 48 49 33 32 ZE
e E HE wM bp 64 1 pin 1 index 16 ZD bp D HD wM B vM B vM A 17 detail X L A A2 A1
Q (A 3) Lp
e
0
2.5 scale
5 mm
DIMENSIONS (mm are the original dimensions) UNIT mm A max. 1.60 A1 0.20 0.05 A2 1.45 1.35 A3 0.25 bp 0.27 0.17 c 0.18 0.12 D (1) 10.1 9.9 E (1) 10.1 9.9 e 0.5 HD HE L 1.0 Lp 0.75 0.45 Q 0.69 0.59 v 0.2 w 0.12 y 0.1 Z D (1) Z E (1) 1.45 1.05 1.45 1.05 7o 0o
12.15 12.15 11.85 11.85
Note 1. Plastic or metal protrusions of 0.25 mm maximum per side are not included. OUTLINE VERSION SOT314-2 REFERENCES IEC JEDEC EIAJ EUROPEAN PROJECTION
ISSUE DATE 94-01-07 95-12-19
1996 May 06
23
Philips Semiconductors
Product specification
12 V Voice Coil Motor (VCM) driver and spindle motor pre-driver combination chip
SOLDERING Introduction There is no soldering method that is ideal for all IC packages. Wave soldering is often preferred when through-hole and surface mounted components are mixed on one printed-circuit board. However, wave soldering is not always suitable for surface mounted ICs, or for printed-circuits with high population densities. In these situations reflow soldering is often used. This text gives a very brief insight to a complex technology. A more in-depth account of soldering ICs can be found in our "IC Package Databook" (order code 9398 652 90011). Reflow soldering Reflow soldering techniques are suitable for all LQFP packages. Reflow soldering requires solder paste (a suspension of fine solder particles, flux and binding agent) to be applied to the printed-circuit board by screen printing, stencilling or pressure-syringe dispensing before package placement. Several techniques exist for reflowing; for example, thermal conduction by heated belt. Dwell times vary between 50 and 300 seconds depending on heating method. Typical reflow temperatures range from 215 to 250 C. Preheating is necessary to dry the paste and evaporate the binding agent. Preheating duration: 45 minutes at 45 C. Wave soldering Wave soldering is not recommended for LQFP packages. This is because of the likelihood of solder bridging due to closely-spaced leads and the possibility of incomplete solder penetration in multi-lead devices.
TDA5149G
If wave soldering cannot be avoided, the following conditions must be observed: * A double-wave (a turbulent wave with high upward pressure followed by a smooth laminar wave) soldering technique should be used. * The footprint must be at an angle of 45 to the board direction and must incorporate solder thieves downstream and at the side corners. Even with these conditions, do not consider wave soldering LQFP packages LQFP48 (SOT313-2), LQFP64 (SOT314-2) or LQFP80 (SOT315-1). During placement and before soldering, the package must be fixed with a droplet of adhesive. The adhesive can be applied by screen printing, pin transfer or syringe dispensing. The package can be soldered after the adhesive is cured. Maximum permissible solder temperature is 260 C, and maximum duration of package immersion in solder is 10 seconds, if cooled to less than 150 C within 6 seconds. Typical dwell time is 4 seconds at 250 C. A mildly-activated flux will eliminate the need for removal of corrosive residues in most applications. Repairing soldered joints Fix the component by first soldering two diagonallyopposite end leads. Use only a low voltage soldering iron (less than 24 V) applied to the flat part of the lead. Contact time must be limited to 10 seconds at up to 300 C. When using a dedicated tool, all other leads can be soldered in one operation within 2 to 5 seconds between 270 and 320 C.
1996 May 06
24
Philips Semiconductors
Product specification
12 V Voice Coil Motor (VCM) driver and spindle motor pre-driver combination chip
DEFINITIONS Data sheet status Objective specification Preliminary specification Product specification Limiting values
TDA5149G
This data sheet contains target or goal specifications for product development. This data sheet contains preliminary data; supplementary data may be published later. This data sheet contains final product specifications.
Limiting values given are in accordance with the Absolute Maximum Rating System (IEC 134). Stress above one or more of the limiting values may cause permanent damage to the device. These are stress ratings only and operation of the device at these or at any other conditions above those given in the Characteristics sections of the specification is not implied. Exposure to limiting values for extended periods may affect device reliability. Application information Where application information is given, it is advisory and does not form part of the specification. LIFE SUPPORT APPLICATIONS These products are not designed for use in life support appliances, devices, or systems where malfunction of these products can reasonably be expected to result in personal injury. Philips customers using or selling these products for use in such applications do so at their own risk and agree to fully indemnify Philips for any damages resulting from such improper use or sale.
1996 May 06
25
Philips Semiconductors
Product specification
12 V Voice Coil Motor (VCM) driver and spindle motor pre-driver combination chip
NOTES
TDA5149G
1996 May 06
26
Philips Semiconductors
Product specification
12 V Voice Coil Motor (VCM) driver and spindle motor pre-driver combination chip
NOTES
TDA5149G
1996 May 06
27
Philips Semiconductors - a worldwide company
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Internet: http://www.semiconductors.philips.com/ps/ For all other countries apply to: Philips Semiconductors, Marketing & Sales Communications, Building BE-p, P.O. Box 218, 5600 MD EINDHOVEN, The Netherlands, Fax. +31-40-2724825 SCDS48 (c) Philips Electronics N.V. 1996
All rights are reserved. Reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. The information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed without notice. No liability will be accepted by the publisher for any consequence of its use. Publication thereof does not convey nor imply any license under patent- or other industrial or intellectual property rights.
Printed in The Netherlands
397021/1200/01/pp28 Document order number: Date of release: 1996 May 06 9397 750 00823

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