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CMD4510
Motor Driver for Portable DVD Player with DC-DC Step Down Converter
DESCRIPITION
The CMD4510 is a 4-channel BTL driver IC for driving the motors and actuators such as used in DVD player and consists of two DC-DC Step Down Converters. It is pretty fit for portable DVD player application. Package material is Pb Free for environmental protection.
Outline Drawing
FEATURE
4-channel BTL: 1) Two channels are voltage-type BTL drivers for actuators of tracking and focus. Two channels are voltage-type BTL driver for sled and spindle motors. It is also built-in two DC-DC converters. 2) Wide dynamic range for motor drive [3.6V (typ.) when Vcc= 5V, at RL= 20 load]. 2 DC-DC Step down converters: 1) Efficiency up to 85% 2) Operation from 4.5~16V 3) Typical frequency operation to 240KHz. 4) Over voltage protection built-in. 5) Over current protection built-in. Common circuit 1) Level shift circuit built-in. 2) Thermal shut down circuit built-in. 3) Mute mode built-in for motor drive. EN1, EN2 mode control for two set of DC-DC step down converters.
APPLICATIONS
BTL driver for portable DVD player with DC-DC power management
* All specs and applications shown above subject to change without prior notice. 1F-5 NO.66 SEC.2 NAN-KAN RD ., LUCHU , TAOYUAN, TAIWAN Email: server@ceramate.com.tw Tel:886-3-3214525 Http: www.ceramate.com.tw Page 1 of 7 Rev 1.0 Mar. 28, 2006 Fax:886-3-3521052
CMD4510
Motor Driver for Portable DVD Player with DC-DC Step Down Converter
BLOCK DIAGRAM AND PIN CONFIGURATION
PIN DESCRIPTION
Pin No 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 Pin Name EN2 CT2 COMP2 SW2 IPK2 PVcc1 PVcc2 VOFC+ VOFCVcc1 VINFC VINSL+ MGND VOSL+ VOSLMGND VOTK+ VOTKMGND Description Enable pin for buck converter 2 Timing capacitor input 2 Comparator inverting input 2 Switching output 2 Current sense 2 Vcc for step down converter 1 Vcc for step down converter 2 Focus driver output(+) Focus driver output(-) Vcc for power block of sled Input for focus driver Input for the sled driver Ground for motor driver Sled driver output(+) Sled driver output(-) Ground for motor driver Tracking driver output(+) Tracking driver output(-) Ground for motor driver
Continue
* All specs and applications shown above subject to change without prior notice. 1F-5 NO.66 SEC.2 NAN-KAN RD ., LUCHU , TAOYUAN, TAIWAN Email: server@ceramate.com.tw Tel:886-3-3214525 Http: www.ceramate.com.tw Page 2 of 7 Rev 1.0 Mar. 28, 2006 Fax:886-3-3521052
CMD4510
Motor Driver for Portable DVD Player with DC-DC Step Down Converter Pin No 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 Pin Name VOSP+ VOSPVINSP VINTK Vcc2 PGND PGND1 PGND2 IPK1 SW1 COMP1 CT1 EN1 MUTE BIAS Description Spindle driver output(+) Spindle driver output(-) Input for spindle driver Input for tracking driver Vcc for power block of spindle, tracking and focus Ground for analog ground Ground for step down converter 1 Ground for step down converter 2 Current sense 1 Switching output 1 Comparator inverting input 1 Timing capacitor input 1 Enable pin for buck converter 1 Input for mute control Input for reference voltage
ABSOLUTE MAXIMUM RATINGS (Ta=25C)
Characteristic Supply Voltage 1 for driver Supply Voltage 2 for driver Supply voltage for converter Power dissipation Operating Temperature range Storage temperature range Symbol Vcc1 Vcc2 PVcc Pd Topr Tstg Value 13.5 13.5 17.6 2.2* -40~+85 -55~+150** Unit V V V C C C
* Power dissipation reduces 17.6mW/C for operation above Ta=25C ** 70mmx70mmx1.6mm glass epoxy board.
RECOMMENDED OPERATING CONDITIONS (Ta=25C)
Characteristic Power supply voltage Symbol Vcc1 Vcc2 PVcc Value 4.3~13.2 4.3~Vcc1 4.5~16 Unit V
* All specs and applications shown above subject to change without prior notice. 1F-5 NO.66 SEC.2 NAN-KAN RD ., LUCHU , TAOYUAN, TAIWAN Email: server@ceramate.com.tw Tel:886-3-3214525 Http: www.ceramate.com.tw Page 3 of 7 Rev 1.0 Mar. 28, 2006 Fax:886-3-3521052
CMD4510
Motor Driver for Portable DVD Player with DC-DC Step Down Converter
ELECTRICAL CHARACTERISTICS (Unless otherwise specified: Ta=25C, Vcc1=5V,
Vcc2=5V, PVcc=12V,BIAS=1.65V,RL=8/10/20)
Characteristics Quiescent current Standby current 1 Standby current 2 Standby current 3 Voltage for mute ON Voltage for mute OFF Voltage for EN low Voltage for EN high Actuator drivers Output offset voltage Maximum output voltage voltage gain Sled motor driver Output offset voltage Maximum output voltage Closed loop voltage gain Spindle motor driver Output offset voltage Maximum output voltage Voltage gain Gain error by polarity Step down converter Oscillator frequency Charge current Discharge current Current limit sense voltage Comparator threshold voltage Output source current Output sink current Fosc Ichg Idischg Vipk Vth Isource Isink Vout=0V Vout=9V Rsc=0.1 CT=68PF 240 24 144 200 1.25 180 120 KHz A A mV V mA mA Voofld Vomax Gvld Gvld
@8 load VIN=BIAS+0.2Vpp @1KHz VIN=BIAS+0.2Vpp @1KHz ac ac
Symbol Icc Istb1 Istb2 Istb3 Vston Vstoff VENL VENH Voo Vom Gv Voofsl Vomsl Gvsl
Test conditions
Mute=L,EN1=H,EN2=H Mute=H,EN1=L,EN2=L Mute=L,EN1=L,EN2=L
Min
Typ 19 3 15
Max
Unit mA mA mA
40 0 2.0 0 2.0
52
60 0.5 5 0.5 5 50
A V V V V mV V dB mV V dB mV V dB dB
@10 load VIN=BIAS+0.2Vpp @1KHz ac
3.4 21.5 23.5 25.5 100
@20 load VIN=BIAS+0.2Vpp @1KHz ac
3.6 18 20 22 50 3.2 13.5 0 15.5 1 17.5 2
* All specs and applications shown above subject to change without prior notice. 1F-5 NO.66 SEC.2 NAN-KAN RD ., LUCHU , TAOYUAN, TAIWAN Email: server@ceramate.com.tw Tel:886-3-3214525 Http: www.ceramate.com.tw Page 4 of 7 Rev 1.0 Mar. 28, 2006 Fax:886-3-3521052
CMD4510
Motor Driver for Portable DVD Player with DC-DC Step Down Converter
POWER DISSIPATION CURVE:
APPLICATION INFORMATION
1)The built-in thermal shutdown circuit mutes the output current of 4-channel BTL when the chip temperature reaches 175C (typ.). The hysteresis is set to 25C (typ.), so the circuit will start up again when the chip temperature falling to 150C(typ.). 2) In case mute pin voltage is under 0.5V or NC, output current is muted (except two DC-DC converter). Mute pin voltage should be more than 2.0V for normal application. 3) In case EN pin voltage is under 0.5V or NC, the converter circuit will stop operation. EN pin voltage should be more than 2.0V for normal application. 4) Bias pin (pin 34) should be pulled up to more than 1.2V. In case the bias pin voltage is pulled down below 0.9V (typ.),the output current of 4-channel BTL is muted. 5) Heat dissipation fins are attached to the GND on the inside of the package. Make sure to connect them to the external GND. 6)DC-DC Step down converter: Please refer to application note. 7)Truth table of Mute,EN1,EN2.
Truth table (: active Mute EN1 H --H --L L x:inactive EN2 --H L --:don't care) Motor channel --x
DC-DC ctrl 1 - -x
DC-DC ctrl 2 -- x
* All specs and applications shown above subject to change without prior notice. 1F-5 NO.66 SEC.2 NAN-KAN RD ., LUCHU , TAOYUAN, TAIWAN Email: server@ceramate.com.tw Tel:886-3-3214525 Http: www.ceramate.com.tw Page 5 of 7 Rev 1.0 Mar. 28, 2006 Fax:886-3-3521052
CMD4510
Motor Driver for Portable DVD Player with DC-DC Step Down Converter
APPLICATION CIRCUIT
* All specs and applications shown above subject to change without prior notice. 1F-5 NO.66 SEC.2 NAN-KAN RD ., LUCHU , TAOYUAN, TAIWAN Email: server@ceramate.com.tw Tel:886-3-3214525 Http: www.ceramate.com.tw Page 6 of 7 Rev 1.0 Mar. 28, 2006 Fax:886-3-3521052
CMD4510
Motor Driver for Portable DVD Player with DC-DC Step Down Converter
OUTLINE DRAWING
* All specs and applications shown above subject to change without prior notice. 1F-5 NO.66 SEC.2 NAN-KAN RD ., LUCHU , TAOYUAN, TAIWAN Email: server@ceramate.com.tw Tel:886-3-3214525 Http: www.ceramate.com.tw Page 7 of 7 Rev 1.0 Mar. 28, 2006 Fax:886-3-3521052

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