ROHM BH6504K Datasheet

Optical disc ICs

PWM driver for CD and MD players

BH6504K

The BH6504K is a 4-channel PWM driver designed for CD and MD player motors and actuator drives. The power MOF­SET output stage allows for applications with low power consumption. This IC also has a charge pump circuit and stan­dard operational amplifier (needed for power MOSFET gate drives), and so supports a wide spectrum of applications.

Applications
Portable CD players, MD players

Features

1) Low power consumption.

2) A minimum of attached components.

3) Excellent gain precision because of the voltage feed­back circuit.

4) Internal mute function for channel 1.

Absolute maximum ratings (Ta = 25C)

5) Allows for free-running and clock synchronization op­eration.

6) Internal standard operational amplifier.

7) Internal charge pump circuit for gate drive.

8) Switchable to doubled clock synchronization.

Recommended operating conditions

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Optical disc ICs BH6504K

Block diagram

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Optical disc ICs BH6504K

Pin descriptions

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Optical disc ICs BH6504K

Input / output circuits

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Optical disc ICs BH6504K

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