CD PRODUCTS KA9259D 5-CH MOTOR DRIVER 28-SSOPH-375 The KA9259BD is a monolithic integrated circuit, and suitable for 5-ch motor driver which drives focus actuator, tracking actuator, sled motor, spindle motor and loading motor of CD system. FEATURES • 1 phase, full-wave, linear DC motor driver • Built-in TSD (Thermal shutdown) circuit • Built-in 5V regulator (With an external PNP TR) • Built-in mute circuit • Built-in loading motor speed control circuit • Wide operating supply voltage range: 6V~13.2V ORDERING INFORMATION TARGET APPLICATION • CD-PLAYER • VIDEO-CD • CAR-CD Device Package Operating Temperature KA9259D 28-SSOPH-375 −25°C ~ +75°C 22 DO5.1 VCC2 23 DO5.2 VREF 24 DO3.1 DI4.1 25 DO3.2 DI4.2 26 DI3 DO4.1 27 LD CTL DO4.2 28 FIN (GND) VCC1 GND3 BLOCK DIAGRAM 21 20 19 18 17 16 15 10k + − Level shift + 10k 10k − + Level shift TSD − − − + + + + − Level shift 10k − Regulator 10k 10k Mute + − + 10k 10k 50k Level shift − − + 2.5V 50k + COMP − Level shift + − 10k DO1.2 DI1.1 DI1.2 REB REO MUTE FIN (GND) 8 9 10 11 12 13 14 DI5.2 7 GND2 6 DO2.2 5 DO2.1 4 DI2 3 DI5.1 2 GND1 1 DO1.1 10k 1 KA9259D CD PRODUCTS DO3.2 DO3.1 DO5.2 DO5.1 21 20 19 18 17 16 15 8 9 10 11 12 13 14 DO2.2 GND2 DI5.2 22 DO2.1 VCC2 23 DI3 VREF 24 DI2 DI4.1 25 LD CTL DI4.2 26 DI5.1 DO4.2 27 VCC1 DO4.2 28 FIN (GND) GND1 GND3 PIN CONFIGURATION 1 2 3 4 5 6 7 DO1.1 DO1.2 DI1.1 DI1.2 REB REO MUTE KA9259D FIN (GND) PIN DESCRIPTION Pin No. Symbol 2 I/O Description Pin No. Symbol I/O Description 1 DO1.1 O Focus output 1 (−) 15 DO5.1 O Loading output 1(+) 2 DO1.2 O Focus output 2 (+) 16 DO5.2 O Loading output 2(−) 3 DI1.1 I Focus input 1 17 DO3.1 O Sled output (−) 4 DI1.2 I Focus input 2 (Adjustable) 18 DO3.2 O Sled output (+) 5 REB O Regulator base 19 DI3 I Sled input 6 REO O Regulator output, 5V 20 LD CTL I Loading motor speed control 7 MUTE I Mute 21 VCC1 − Supply voltage 1 8 GND1 − Ground 1 22 VCC2 − Supply voltage 2 9 DI5.1 I Loading input 1 23 VREF I 2.5V bias 10 DI2 I Spindle input 2 24 DI4.1 I Tracking input 1 (Adjustable) 11 DO2.1 O Spindle output (+) 25 DI4.2 I Tracking input 2 12 DO2.2 O Spindle output (−) 26 DO4.1 O Tracking output 1 (+) 13 GND2 − Ground 2 27 DO4.2 O Tracking output 2 (−) 14 DI5.2 I Loading input 2 28 GND3 − Ground 3 CD PRODUCTS KA9259D EQUIVALENT CIRCUITS Driver input (Except for loading motor driver) Driver output 10k 2.5V 1 2 11 12 15 16 17 18 27 26 10k 20k 0.58k 10 3 4 25 19 24 VREF1 Loading motor driver input Loading motor speed control input 14 9 50k 50k 50k 50k 50k 50k 50k 50k 50k 50k 50k 20 50k 50k 50k Mute input Bias input 50k 50k 23 7 50k 3 KA9259D CD PRODUCTS ABSOLUTE MAXIMUM RATING (Ta=25°°C) Characteristics Symbol Value Unit VCC MAX 18 V PD @1.7 W Operating temperature TOPR −25 ~ +75 °C Storage temperature TSTG −55 ~ +150 °C Maximum current output IOMAX 1 A Maximum supply voltage Power dissipation NOTE:@ 1. When mounted on 76mm × 114mm × 1.57mm PCB (Phenolic resin material). 2. Power dissipation reduces 13.6mW / °C for using above Ta=25°C 3. Do not exceed Pd and SOA. Pd (mW) 3,000 2,000 1,000 0 0 25 50 75 100 125 150 175 Ambient temperature, Ta [°C] RECOMMENDED OPERATING CONDITION (TA=25°°C) Characteristics Operating supply voltage 4 Symbol Value Unit VCC 6 ~ 13.2 V CD PRODUCTS KA9259D ELECTRICAL CHARACTERISTICS (Ta=25°C, VCC=8V, RL=8Ω, f=1kHz, unless otherwise specified) Characteristic Symbol Test conditions Min. Typ. Max. Unit Quiescent circuit current ICCQ Under no-load 7 10 13 mA Mute-on current IMUTE Pin 7=GND − 4 7 mA Mute-on voltage VMON − − − 0.5 V Mute-off voltage VMOFF − 2 − − V REGULATOR PART Output voltage VREG IL=100mA 4.7 5.0 5.3 V Load regulation ∆VRL3 IL=0→200mA −50 0 50 mV Line regulation ∆VCC VCC=6→13V, IL=100mA −20 0 80 mV DRIVER PART (Except for loading motor driver) Input offset voltage Output offset voltage 1 Maximum source current 1 VIO − −15 − 15 mV VOO1 − −40 − 40 mV 0.25 0.4 − A ISOURCE1 RL=8Ω→VCC Maximum sink current 1 ISINK1 RL=8Ω→GND 0.25 0.4 − A Maximum output voltage 1 VOM1 VIN=0.7V 2.5 3.3 − V Maximum output voltage 2 VOM2 VIN=7V − −4.5 −3.7 V Closed-loop voltage gain AVF VIN=0.1VRMS 5 6.5 8 dB Ripple rejection ratio RR VIN=0.1VRMS, f=120Hz 40 60 − dB Slew rate SR 120Hz, VIN=1VRMS, Square wave 1 2 − V / µs LOADING MOTOR DRIVER PART (Unless otherwise specified, VCTL=opened) Output voltage 1 VO1 VPIN9=5V, VPIN14=0V, RL=45Ω 2.5 3.1 3.8 V Output voltage 2 VO2 VPIN9=0V, VPIN14=5V, RL=45Ω 2.5 3.1 3.8 V Output voltage regulation 1 (CTL) VOCTL1 VCTL=3.5→4.5V, VPIN9=5V VPIN14=0V, RL=45Ω 0.5 1.0 1.5 V Output voltage regulation 2 (CTL) VOCTL2 VCTL=3.5→4.5V, VPIN9=0V VPIN14=5V, RL=45Ω 0.5 1.0 1.5 V Load regulation 1 ∆VRL1 IL=100→400mA, VPIN9=5V, VPIN14=0V − 300 700 mV Load regulation 2 ∆VRL2 IL=100→400mA, VPIN9=0V, VPIN14=5V − 300 700 mV Output offset voltage 2 VOO2 VPIN9=5V, VPIN14=5V −40 − 40 mV Output offset voltage 3 VOO3 VPIN9=0V, VPIN14=0V −40 − 40 mV 5 KA9259D CD PRODUCTS APPLICATION INFORMATION 1. MUTE Pin #7 Mute circuit High Turn-off Low Turn-on Output driver bias 7 • When the mute pin #7 is open or the voltage of the mute pin #7 is below 0.5V, the mute circuit is activated so that the output circuit will be muted. • When the voltage of the mute pin is above 2V, the mute circuit is stopped and the output circuit is operated normally. • If the chip temperature rises above 175°C, then the TSD (Thermal shutdown) circuit is activated and the output circuit is muted. 2. TSD (THERMAL SHUTDOWN) VREF BG Output driver bias R11 Q11 R12 • The VREF BG is the output voltage of the band-gap-referenced biasing circuit and acts as the input voltage of the TSD circuit. • The base-emitter voltage of the TR, Q11 is designed to turn-on at below voltage. VBE = VREF BG × R12 / (R11+R12) = 400mV • When the chip temperature rises up to 175°C, then the turn-on voltage of the Q11 would drop down to 400mV. Hence, the Q11 would turn on so the output circuit will be muted. 6 CD PRODUCTS KA9259D 3. REGULATOR 5 I KSB772 − VREF BG 6 VOUT (5V) + D1 R2 + R1 CE 100µF R3 D2 • The VREF BG is the output voltage of the band-gap-referenced biasing circuit and is the reference voltage of the regulator. • The external circuit is composed of the transistor, KSB772 and a capacitor, 100µF, and the capacitor is used as a ripple eliminator and should have a good temperature characteristics. • The output voltage, VOUT is decided as follows. VOUT = VREF BG × 2 = 2.5 × 2 = 5V (R2 = R3) R2 = R3 4. LOADING MOTOR DRIVER 20 I +∆V R COMP 9 + 14 − + Buffer − Q1 −∆V +∆V 15 −∆V I + R Q2 M VREF1 Buffer Q3 16 Q4 − VREF1 • The input voltages of (5V and 0V) or (0V and 5V) pairs are applied to the input pin #9 and #14 respectively. • When the input voltages are applied to the input pin #9 and #14, then the output of the comparator is decided depends on the input voltage status. • As shown in the above diagram, the difference ∆V, [VREF1 + (I × R)] - [VREF1 -(I × R)], is applied to the both terminals of the motor. The direction of the motor is decided by the voltage difference, +∆V and −∆V. • The output characteristics is as follows, — If pin # 9=5V and #14=0V, then pin # 15=+∆V and #16= −∆V, hence the motor turn in forward direction. — If pin # 9=0V and #14=5V, then pin # 15= −∆V and #16=+∆V, hence the motor turn in reverse direction. — If pin # 9=5V and #14=5V, then ∆V=0V, hence the motor stop. — If pin # 9=0V and #14=0V, then ∆V=0V, hence the motor stop. • When the rotation speed control of the loading motor is desired, refer to the follows. 7 KA9259D CD PRODUCTS 5. LOADING MOTOR SPEED CONTROL VCC VCC (8V) 50k VCC VCC (8V) 50k R 20 R 20 4V 4V 50k 50k D • If the torque of the loading motor is too low when it is used with the pin #20 open, then it should used as the above diagram. • The desired torque could be obtained by selecting the appropriate resistor R as shown in the left diagram. • If it is necessary, the zener diode can be used as in the right diagram. • The maximum torque is obtained when the applied voltage at pin #20 is about 6.8V (at VCC=8V). 6. DRIVER (EXCEPT FOR LOADING MOTOR DRIVER) VREF (2.5V) + − 3 −∆I AMP Level shift + Buffer − Q1 10k 24 10k +∆I 100k +∆V Q2 M 19 25 4 −∆V 10 + Buffer − Q3 1 2 11 12 17 18 27 26 Q4 • The voltage, VREF, is the reference voltage given by the bias voltage of the pin #23. • The input signal through the pin #3 is amplified by 10k/10k times and then fed to the level shift. • The level shift produces the current due to the difference between the input signal and the arbitrary reference signal. The current produced as +∆I and −∆I is fed into the driver buffer. • Driver Buffer operates the power TR of the output stage according to the state of the input signal. • The output stage is the BTL Driver and the motor is rotating in forward direction by operating TR Q1 and TR Q4. On the other hand, if TR Q2 and TR Q3 is operating, the motor is rotating in reverse direction. • When the input voltage through the pin #3 is below the VREF, then the direction of the motor in forward direction. • When the input voltage through the pin #3 is above the V REF, then the direction of the motor in reverse direction. • If it is desired to change the gain, then the pin #4 or #24 can be used. 8 CD PRODUCTS KA9259D 7. When the bias voltage of the pin #23 is below 1.4V, then the output circuit will be muted. Hence for the normal operation, the bias voltage should be used in 1.6V~6.5V. 8. Connect a by-pass capacitor, 0.1µ µF between the supply voltage source. VCC2 22 VCC1 21 104 9. Radiation fin is connecting to the internal GND of the package. Connect the fin to the external GND. 9 KA9259D CD PRODUCTS ELECTRICAL CHARACTERISTICS CURVES Vcc vs. Icc Vcc vs. Imute Vcc=vari pin23=2.5 Vcc=vari* Vcc=vari* pin23=2.5 RL=8Ω Vcc=vari* pin23=2.5 RL=8Ω Vcc=13V Vcc=vari* pin23=2.5 RL=8Ω frequency vs. Avf1 Vcc vs. Avf1 10 Vcc vs. Isink Vcc vs. Isou CD PRODUCTS KA9259D ELECTRICAL CHARACTERISTICS CURVES(CONTINUE) Vcc vs. om1 Vcc vs. Vreg Vcc=vari* Vcc=vari* 11 KA9259D CD PRODUCTS TEST CIRCUIT SW13 3 2 8Ω 1 SW12 VCC 8Ω 3 SW14 2 8Ω 3 SW20 1 SW10 3 8Ω 1 VCC VCC 2 8Ω SW19 1 TRACKING SLED CTL 100µF Ripple ~ ~ VCC SW9 ~ VCC + 8Ω 3 2 SW21 3 2 + 45Ω 2 + 10µF 2 1 1 SW18 8Ω 1 10µF 2 + 3 20Ω SW17 3 1 SW16 SW15 SW11 3 8Ω 1 2 IL 2.5V VCC VCC 28 27 26 25 24 23 22 21 GND3 DO4.2 DO4.1 DI4.2 DI4.1 VREF VCC2 20 19 18 17 16 15 VCC1 LD ctl DI3 DO3.2 DO3.1 DO5.2 DO5.1 GND DO2.1 DO2.2 GND2 DI5.2 KA9259D DO1.1 DO1.2 DI1.1 DI1.2 REB 1 2 3 4 6 MUTE 7 9 10 11 12 13 14 VCC SW4 1 SW1 2 Mute 3 KSB772 1 8Ω 3 + 2 8Ω VCC SW2 Focus Spindle 3 Loading reverse 8Ω VCC ~ 100µF 1 2 8Ω + 2 Loading forwaed IL ~ SW3 SW7 3 SW5 + 1 DI5.1 DI2 8 VCC VCC 1 REO 5 SW6 SW8 1 2 2 3 12 8Ω 8Ω 3 CD PRODUCTS KA9259D APPLICATION CIRCUIT SERVO PRE-AMP FOUCS TRACKING BIAS CONTROLLER SLED SPINDLE TRACKING ACTUATOR CONTROL FORWARD VCC REVERSE SLED MOTOR LOADING MOTOR M M 102 28 27 26 25 GND3 DO4.2 DO4.1 DI4.2 24 23 DI4.1 22 21 VREF VCC2 20 19 18 17 16 15 VCC1 LD ctl DI3 DO3.2 DO3.1 DO5.2 DO5.1 GND DI5.1 DI2 8 9 10 KA9259D DO1.1 DO1.2 DI1.1 DI1.2 1 2 3 4 REB REO 5 6 MUTE 7 DO2.1 DO2.2 GND2 DI5.2 11 12 13 14 VCC KSB772 FOCUS ACTUATOR 100µF 5V out + M MUTE Low: ON High: OFF SPINDLE MOTOR 13