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Silicore
4 CHANNEL DRIVER
DESCRIPTION
The D5954 is a 4 channel driver for optical disc mo tor driver. Dual channel current feedback type drivers are built in, in addition to dual channel motor drivers
MOTOR DRIVER
D5954
Outline Drawing
FEATURE
Wide dynamic range. (4.0V (typ .) at PreVcc=12V,PVcc=5V,RL=8) Separating Vcc into Pre+Power of sled motor, Power of loading mo tor and Power of actuator ,can make better power efficiency, by low supply voltage drive. Level shift circuit built in. Thermal-shut-down circuit built in Stand-by mode built in
BLOCK DIAGRAM
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PIN DESCRIPTION
No Symbol 1 2 3 4 5 6 7 8 9 10 11 12 13 14 VINFC CECerr1 Function Input for focus driver NO. Symbol 15 16 17 18 19 20 21 22 23
D5954
Connectio n with capacitor CECerr2 for error amplifier VINSL + VINSLVOSL VNFFC Vcc PVcc1 PGND VOSLNon inverting input for OP-amp Inverting input for OP-amp Output of OP-amp Feedback for focus driver Vcc for pre-driver block and power block of sled Vcc for power block of loading GND for power block for sled output for
Function Non inverting output for VOTK+ tracking VOTK- Inverting output for tracking Non inverting output for OLD+ loading VOLDPGND Inverting output for loading GND for power block
VNFTK Feedback for tracking driver Vcc for po wer block of PVcc2 actuator PreGND GND for pre-drive block VINLD Input for loading driver Connectio n with capacitor for error amplifier Input for tracking driver Input for reference voltage Input for stand-by control
24 CTKerr2 25 26 CTKerr1 VINTK BIAS STBY
Inverting output Non inverting VOSL+ sled VOFC- Inverting output Non inverting VOFC+ focus
for focus 27 output fo r 28
ABSOLUTE MAXIMUM RATINGS (Ta=25 C)
Characteristic Supply voltage Power dissipation Operating temperature Storage Temperature Symbol Vcc PD Topr Tstg Value 13.5 1.7* -35~85 -40~150
2
Unit V W C C
* On less than 3%(percentage occupied by copper foil), 70x70mm , t=1.6mm, glass epoxy mounting. Reduce power by 13.6mW for each degree above 25C
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GUARANTEED OPERATING RANGES
Parameter Supply voltage Symbol Vcc PVcc1 PVcc2 Limits 4.3~13.2 4.3~Vcc 4.3~Vcc
D5954
Unit V
ELECTRICAL CHARACTERISTICS
(unless otherwise sp ecified : Ta=25C, Vcc=12V RL=8 , Rd=0.5 , C=100pF) Characteristics Quiescent current Stand-by quiescent current Voltage for stand-by ON Voltage for stand-by OFF < Actuator driver > Output offset current Maximu m output voltage Trans conductance Common mode input range Input bias current Low level output voltage Output source current Output sink current < Sled mo tor driver > Output offset voltage Maximum output voltage Closed loop voltage gain < Loading motor driver> Output offset voltage Maximum output voltage Closed loop voltage gain Gain error by polarity VIN=BIAS0.2V VIN=BIAS0.2V VOOFLD -50 VOMLD GVLD GVLD 3.6 13.5 0 0 4.0 15.5 17.5 1 2 50 mV V dB dB
3/6
PVcc1=PVcc2=5V,BIAS=2.5V,
Test conditions
Symbol Min Icc Isc VSTON VSTOFF Ico Vc M 2.0 -6 3.6 1.3 -0.3
Typ 18
Max Unit 27 0.5 0.5 mA mA V V 6 mA V 1.7 11.0 A/V V nA V mA mA
4.0 1.5
VIN=BIAS0.2V
gm VICM IBOP VOLOP ISO IST VOOFSL VOMSL
< Sled motor driver/ Pre OP-amp > 30 0.1 0.3 1 -100 7.5 18 0 9.0 20 22 100 0.5 300 0.3
mV V dB
VIN=0.2V
GVSL
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TEST CIRCUIT
100uH
0.5|
VST 2.5V VIN2
D5954
8|
A Io2
VIN4
5V
8|
V Vo4
V Vo2
16
100pF
28
27
26
25
24
23
22
21
20
19
18
17
15
D5954
1
2
3
4
5
6
7
8
9
10
11
12
VIN1
SW
100pF 2
1
1 2 1M
IQ A
Vo3
V
5V
13 14 Vo1 V
A Io1
VBOP V
8|
1M
12V
0.5|
VIN3
V VBOP VOOP V
8|
IOOP
100uH
SWITCH TABLE
Characteristics Quiescent current St a n d - b y q u i e s c e n t c u r r e n t Vo l t a g e f o r s t a n d - b y O N Vo l t a g e f o r s t a n d - b y O F F < Actuator driver > O u t p u t o ff s e t c u r r e n t Maximum output voltage Tr a n s c o n d u c t a n c e < Loading motor driver> O u t p u t o ff s e t v o l t a g e Maximum output voltage Vo l t a g e g a i n 1 1 1 2.5V 2.5V 2.5V 2.5V 2.5V 2.5V 2.5V 2.5V 2.5V 2.5V 0V 5V 2.3V 2.7V 5.0V 5.0V 5.0V Vo 4 Vo 4 Vo 4
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SW 1 1 1 1
Input voltage VIN1 2.5V 2.5V 2.5V 2.5V VIN2 2.5V 2.5V 2.5V 2.5V VIN3 2.5V 2.5V 2.5V 2.5V VIN4 2.5V 2.5V 2.5V 2.5V VST 5.0V 0.5V 0.5V 2.0V
Conditions
Measure point IQ IQ IQ IQ
1 1 1
2.5V 0V 5V 2.3V 2.7V
2.5V 0V 5V 2.3V 2.7V
2.5V 2.5V 2.5V
2.5V 2.5V 2.5V
5.0V 5.0V 2.5V
Vo 1 / 2 Vo 1 / 2 Vo 1 / 2
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SWITCH TABLE
Characteristics < Sled motor driver > Input bias current Low level output voltage Output source current Output sink current O u t p u t o ff s e t v o l t a g e Maximum output voltage Closed loop voltage gain 2 1 1 1 1 1 1 2.5V 2.5V 2.5V 2.5V 2.5V 2.5V 2.5V 2.5V 2.5V 2.5V 2.5V 2.5V 2.5V 2.5V 2.5V 0V 2.5V 2.5V 2.5V 0V 5V 2.3V 2.7V 2.5V 2.5V 2.5V 2.5V 2.5V 2.5V 2.5V 5.0V 5.0V 5.0V 5.0V 5.0V 5.0V 5.0V Ioop=+0.2mA Ioop=-1mA SW Input voltage VIN1 VIN2 VIN3 VIN4 VST Conditions
D5954
co n tin u e
Measure point
VBOP/1M Vo o p Vo o p Vo o p Vo 3 Vo 3 Vo 3
APPLICATION CIRCUIT
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NOTES ON USE
1. Thermal-sh ut-down circuit built-in. In case IC ch ip temp erature
D5954
rise
to
175C(typ.), thermal-shut-down circuit operates and ou tput current is mu ted. Next time IC chip temperature falls bellows 150C(typ.), the driver blocks start. 2. In case stand-by-pin voltage und er 0.5V or opened, quiescent cu rrent is muted. Stand-by-pin voltage should be over 2.0V for normal application. 3. In case supply voltage falls below 3.5V (typ.), output current is mu ted. Next time supply voltage rises to 3.7V(typ .), the driver blocks start. 4. Bias\pin (pin 27 ) sh ou ld be pu lled u p mo re than 1.2V. In case bias-pin voltage is pulled down under 0.9V (typ .), output current is mu ted. 5. Insert the by-pass capacito r between Vcc-pin and GND-pin of IC as possible as near (approximately 0.1F). 6. Heat dissipation fins are attached to the GND on the inside of the package. Make sure to connect these to the external GND. 7. Output pin is to avoid short-circuit with Vcc, GND and other output pins. And, be fully careful in the direction of an integrated circuit when you put an integrated circuit. On the su bstrate. An integrated circuit is da maged, and smoke may co me out by the case. u Output pin ...11~18pin Vcc...8pin, PVcc1...9pin, PVcc2...21pin
PreGND...22pin, PGND...10,19pin
CHARACTERISTIC CURVES
3 Pd (W) 2 1 0 0 25 50 75 100 125 150
Pd : p ower d issip atio n
Ambient temperature Ta (C) epoxy mounting.
* On less than 3%(percentage occupied by copper foil), 70x70 mm 2 , t = 1 . 6 mm, g l a s s
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