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MITSUMI 4-ch BTL Motor Driver for CD Players 4-ch BTL Motor Driver for CD Players Monolithic IC MM1469 Outline This IC is a 4-ch BTL driver developed for driving CD player motors and actuators. With built-in 3.3V (MM1469PH) or 5.0V (MM1469XH) regulator and general-purpose op amp, it supports a variety of applications. Features (1) External resistor allows gain adjustment. (2) Few external parts. (3) Built-in 3.3V or 5.0V regulator. (Requires external PNP Tr.) (4) Built-in general-purpose op amp. (5) Built-in thermal shutdown circuit. Package HSOP-28 Applications (1) CD radio cassette recorder (2) VCD Block diagram (MM1469XH) T. S. D : Thermal Shut Down D. BUF : Driver Buffer 28 27 26 25 24 1k 23 22 VCC 21 VCC 1k 20 19 18 17 16 15 D.BUF D.BUF 10k 13k Level shift D.BUF D.BUF 10k 13k Level shift 50k DRIVER MUTE T.S.D 10k 10k (3.3k) 50k Level shift 13k 13k 10k D.BUF D.BUF 1 2 3 4 1k 5 6 7 8 1k 9 10k D.BUF D.BUF 10 11 12 13 14 note Constane in parenehesis is regulator output voltage 3.3V(MM1469PH). Level shift MITSUMI 4-ch BTL Motor Driver for CD Players Pin configuration ch1 OUT-A ch1 OUT-B ch1 IN-A ch1 IN-B Tr-B VREG-OUT MUTE 1 2 3 4 5 6 7 28 SUBGND 27 ch4 OUT-A 26 ch4 OUT-B 25 ch4 IN-A 24 ch4 IN-B 23 BIAS-IN 22 VCC GND ch2 IN-B ch2 IN-A ch2 OUT-B ch2 OUT-A SUBGND OP OUT 8 9 10 11 12 13 14 21 VCC 20 ch3 IN-B 19 ch3 IN-A 18 ch3 OUT-B 17 ch3 OUT-A 16 OP IN(+) 15 OP IN(-) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 ch1 OUT-A ch1 OUT-B ch1 IN-A ch1 IN-B Tr-B VREG-OUT MUTE GND ch2 IN-B ch2 IN-A ch2 OUT-B ch2 OUT-A SUBGND OP OUT 15 16 17 18 19 20 21 22 23 24 25 26 27 28 OP IN(-) OP IN(+) ch3 OUT-A ch3 OUT-B ch3 IN-A ch3 IN-B VCC VCC BIAS-IN ch4 IN-B ch4 IN-A ch4 OUT-B ch4 OUT-A SUBGND MITSUMI 4-ch BTL Motor Driver for CD Players Terminal explanations Pin No. 1 12 17 27 Pin Name ch1-OUT A ch2-OUT A ch3-OUT A ch4-OUT A Function Driver ch1 negative output Driver ch2 negative output Driver ch3 negative output Driver ch4 negative output VCC Internal equivalent circuit 12k 1 2 11 18 26 12k 12 17 2 11 18 26 ch1-OUT B ch2-OUT B ch3-OUT B ch4-OUT B Driver ch1 positive output Driver ch2 positive output Driver ch3 positive output Driver ch4 positive output 600 27 600 3 10 19 25 ch1-IN A ch2-IN A ch3-IN A ch4-IN A Driver ch1 input Driver ch2 input Driver ch3 input Driver ch4 input 10k 3 10k 10k 10A 2.5V VCC 4 9 20 24 ch1-IN B ch2-IN B ch3-IN B ch4-IN B Driver ch1 input, gain adjustment pin Driver ch2 input, gain adjustment pin Driver ch3 input, gain adjustment pin Driver ch4 input, gain adjustment pin 10 19 25 4 9 20 24 5 Tr- B Connect to external transistor base VCC 15k 40k 5 6k 6 VREG-OUT Constant voltage output, connects to external transistor collector VCC 10A 3k 2.5V 10k 3k 10k 6 MITSUMI 4-ch BTL Motor Driver for CD Players Terminal Explanations Pin No. 7 Pin Name MUTE Function Driver mute control input 50k 50k Internal equivalent circuit 7 8 GND GND GND 8 13 28 Substrate GND Substrate GND Substrate GND 13 28 14 OP-OUT Operational amplifier output VCC 75 14 75 15 16 OP-IN(-) OP-IN(+) Operational amplifier negative input Operational amplifier positive input 15 VCC 10A 16 21 22 VCC VCC 21 22 VCC 23 BIAS -IN Bias amplifier input 23 VCC 50A MITSUMI 4-ch BTL Motor Driver for CD Players Absolute Maximam Ratings Item Storage temperature Supply voltage Power dissipations (Ta=25C) Symbol TSTG VCC max. Pd Rating -55 ~ +150 13.5 1.7 *1 Unit C V W *1 Use base condition:100x100mm, t=1.6mm, copper leaf 50%, glass epoxy mounting. Derating is done at 13.6mW/C for operation above Ta=25C Recommended Operating Conditions Item Operating temperature Operational voltage Symbol TOPR VOPR Rating -35 ~ +85 2.0 ~ 9.0 *2 Unit C V *2 Driver section can operate as low as 5.5V. Electrical Characteristics Item Quiescent current Output voltage offset Output voltage "H" Output voltage "L" Gain (Close circuit) Ripple rejection Slew rate Mute-off voltage 5V regulator Output voltage Output load variation Power supply voltage variation Operational Amplifier Offset voltage Input bias current "H" level output voltage "L" level output voltage Output drive current (sink) Output drive current (source) Voltage gain (open circuit) Slew rate Ripple rejection Common mode rejection ratio (Vcc=8V, Ta=25C, f=1kHz, unless otherwise specified) Test Conditions No load Min. Typ. Max. Unit 5.5 -40 5.2 VIN=0.1Vrms, f=1kHz VIN=0.1Vrms, f=100Hz VOUT=3Vp-p square wave, f=100kHz 2.0 IL=100mA IL=0 ~ 200mA VCC=6 ~ 9V (IL=100mA) 4.75 -50 -10 -2 6.0 1.8 50, at VCC 50, at ground VIN=75dBV, f=1kHz VOUT=4Vp-p square wave, f=100kHz VIN=-20dBV, f=100kHz VIN=-20dBV, f=1kHz 70 10 10 50 30 78 1 65 84 5.00 0 0 0 20 5.25 10 25 2 300 7.0 5.6 1.3 8.0 60 2.0 1.55 9.0 8.0 10.5 40 mA mV V V dB dB V/S V V mV mV mV nA V V mA mA dB V/S dB dB Symbol ICC VOO VOHD VOLD GVC RR SR VMOFF VREG VRL VVCC VOFOP IBOP VOHOP VOLOP ISINK ISOURCE GVO SROP RROP CMRR MITSUMI 4-ch BTL Motor Driver for CD Players Measuring Circuit 1 ch1-OUT A ch1-OUTB ch1-IN A ch1-IN B Tr-B Vreg-out MUTE V SW3 8 GND 28 (sub) ch4-OUT A 27 ch4-OUT B 26 SW6 8 2 SW10 1 10F/25V AC-IN4 DC-IN4 2.5V 2 3 4 5 6 7 V 10F/25V AC-IN1 2 1 SW7 to Vcc ch4-IN A 25 ch4-IN B 24 DC-IN1 2SB1237 V IL BIAS-IN 23 Vcc 22 OFF ON 100F/25V VCC SW2 SW1 2 RIPPLE IN 1 A VCC 8 0.1F 100F/25V SW9 1 10F/25V 10 ch2-IN A 11 ch2-OUT B 12 ch2-OUT A 13 GND DC-IN3 AC-IN3 2 GND ch2-IN B Vcc 21 ch3-IN B 20 ch3-IN A 19 10F/25V AC-IN2 2 1 9 SW8 DC-IN2 V 8 SW4 ch3-OUT B 18 ch3-OUT A 17 8 SW5 10k SW11 10k SW12 VCC 50k 470F/25V V VCC 1 2 3 50 (sub) OP-IN(+) 16 OP-IN(-) 15 A SW18 14 OP-OUT V 10k 1M SHORT SW13 10k SW16 SW17 GVO 10k SW14 1 2 3 50k 10F/25V VOP-IN 10k 1000F/25V 1M SW15 MITSUMI 4-ch BTL Motor Driver for CD Players Application Circuit SERVO TRACKING FOCUS PRE AMP SPINDLE SLED MOTOR to VCC M 19 18 17 TRACKING ACT 28 27 26 25 24 23 22 21 20 SLED BIAS 16 15 MM1469XH 1 2 3 4 5 6 7 8 9 10 11 12 13 14 FOCUS ACT MUTE 2SB1237 to Vcc ON-LOW OFF-HIGH 22F M SPINDLE MOTOR 5V REGULATOR OUT Precautions for use (1) A thermal shut down circuit is built. When the temperature of the chip reaches 175C typ., the output current is muted. (2) If the mute (7PIN) voltage is open or is less than 0.5V, the output current is muted. Under normal operating conditions, make sure to pull pin (7PIN) above 2.0V. (3) If the bias pin (23PIN) drops below 1.4V, the output current is muted. Make sure that under normal operating conditions, this pin is at 1.6V or above. (4) If the power supply voltage drops below 4.5V typ., the drivers are turned OFF. When the voltage exceeds 4.7V typ., the drivers return to their previous state. (5) The channel 4 output is muted in the event of a thermal shut down, mute on, bias pin voltage drop.Other sections are not muted. When muted, the internal bias voltage of the output pin becomes (roughly (VCC-VF)/2). (6) The built-in input resistance has a positive temperature coefficient of 1500ppm/C. When changing the gain using an external resistance, the gain will change as the temperature of the resister changes. When using the built-in input resistance, there are virtually no gain variation due to temperature. (7) Make sure to connect a 0.47F capacitor to the IC input to filter out voltage ripple. (8) Heat dissipation fins are attached to the GND on the inside of the package. Make sure to connect these to the external GND. (9) The capacitor connected between the regulator output (6PIN) and the GND also serves to stop oscillation of the IC circuit. Consequently, make sure to use one with good temperature characteristics. MITSUMI 4-ch BTL Motor Driver for CD Players Characteristics Input Voltage - Output Voltage(1) Driver Circuit(RL=8) 6 4 2 VO (V) Output voltage VCC 9V 8V 7V 6V 0 -2 -4 -6 -4 VCC 6V 7V 8V 9V -2 0 2 4 Input voltage VIN (V) Input Voltage - Output Voltage(2) Driver Circuit(VCC=8V) RL 6 Output voltage 4 2 VO (V) 16 8 4 0 -2 -4 -6 -4 RL 4 8 16 -2 0 2 4 Input voltage VIN (V) Supply Voltage - Output Offset Voltage Driver Circuit Output Offset voltage 30 20 10 0 -10 -20 -30 4 6 8 10 12 14 VOO (mV) Supply voltage VCC (V) Output Load Variaion 5V Regulator 5.10 IL=100mA 5.05 VREG (V) Output voltage 5.00 4.95 4.90 -0.1 0 0.1 0.2 0.3 0.4 Load Current IL (A) MITSUMI 4-ch BTL Motor Driver for CD Players Characteristics Input Voltage - Output Voltage(1) Driver Circuit 6 4 2 0 -2 -4 -6 -4 -2 0 2 4 Input Voltage - Output Voltage(2) Driver Circuit 6 4 2 0 -2 -4 -6 -4 -2 0 2 4 Output voltage Output voltage Input voltage VIN (V) VO (V) VO (V) Input voltage VIN (V) Supply Voltage - Output Offset Voltage Driver Circuit Output Offset voltage 30 20 10 0 -10 -20 -30 4 6 8 10 12 14 Output Load Variation 5V Regulator 5.10 Output voltage OFFSET VOO (mA) 5.05 Vreg (V) 5.00 4.95 4.90 -0.1 0 0.1 0.2 0.3 4 Supply voltage VCC (V) Load Current IL (mA) Temperature - Voltage 5V Regulator 5.10 Supply Voltage - Output Voltage Op Amp 15 Output voltage Output voltage VOHOP VOLOP (V) Vreg (V) 5.05 5.00 4.95 -50 10 5 0 -25 0 25 50 75 100 0 5 10 15 Temperature Ta (C) Supply voltage VCC (V) Supply Voltage - Output Voltage Op Amp 100 Output Current ISINK ISOURCE (mA) 80 60 40 20 0 0 5 10 15 Supply voltage VCC (V) MITSUMI 4-ch BTL Motor Driver for CD Players Characteristics Temperature - Voltage 5V Regulator 5.10 IL=100mA Output voltage 5.05 VREG (V) 5.00 4.95 -50 -25 0 25 50 75 100 Temperature Ta (C) Supply Voltage - Output Voltage Op Amp 15 Output voltage VOH VOHOP VOLOP (V) 10 5 VOL 0 0 5 10 15 Supply voltage VCC (C) Supply Voltage - Output Voltage Op Amp 100 Output Current ISINK ISOURCE (mA) 80 60 40 20 0 0 5 10 Sink Source 15 Supply voltage VCC (V) |
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