Product Summary

The BD7905FS is a 6-channel driver IC that integrates all drivers necessary for optical disc driver. Low vibration, low noise,
and low heat operation have been realized by adopting 180° PWM driving system for spindle motor driver. The BD7905FS is used for the stepping motor.Applications are CD-ROM, DVD-ROM.

Parametrics

BD7905FS absolute maximum ratings: (1)POWER MOS power suuply voltage: 15V; (2)Preblock/BTL powerblock power supply voltage: 15V; (3)PWM control block power supply voltage: 7V; (4)Power dissipation: 2.6W; (5)Operating temperature range: -40~+85°C; (6)Storage temperature: -55~+150°C.

Features

BD7905FS features: (1)3channel BTL driver, 2channel PWM driver and 3phase motor driver: - ALL of the motor and actuator for CD-ROM, DVD-ROM etc.; (2)These mode is able to be selected by the two control terminals: ON/OFF of loading, and other 5channels, brake mode and gain select of spindle driver and standby mode.; (3)Built-in triangular-wave generator; (4)Package SSOP-A54 has large power dissipation; (5)Built in thermal-shut-down circuit.

Diagrams

BD7905FS pin connection