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C M D4504
5-CH Motor Drive IC
Features
l 2-CH l 2-CH l 1-CH
Descriptions
The CMD4504 is a 5CH motor driver for CD-p/VCD/DVD systems. It is composed of 2-CH BTL driver, 2-CH driver with current feedback and 1-CH forward/reverse control DC motor driver.
BTL driver BTL driver with current feedback forward/reverse control DC motor
driver
l Built-in motor speed control circuit l Built-in TSD (thermal shut down) circuit l Built-in mute circuit l Operating supply voltage (4.5V~13.2V)
Internal Block Diagram
VOFC- VOFC+ VOTK- VOTK+ VCC2 28 27 26 25 24
MUTE 23
BIAS 22
VINSP VINSL VCC1 21 20 19
VOSL+ VOSL- VOSP+ VOSP18 17 16 15
VCC2
Stand by
VCC1 PGND
Actuator Driver
Actuator Driver
Thermal Shut Down
Sled Driver
Spindle Driver
20K 10K
20K
7.5K
10K
7.