BD7902CFS

BD7902CFS Optical disc ICs 6CH Power Driver for CD-ROM, DVD-ROM BD7902CFS BD7902CFS is a 6-channel driver IC that integrates all drivers necessary for CD-ROM, and DVD-ROM systems into a single chip. The built-in 2-channel sled motor driver is used for the stepping motor. Low heat operation can be achieved by applying the PWM driving system for sled and spindle motor drivers. !Applications CD-ROM, DVD-ROM !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 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. 〈 Spindle driver 〉 Efficient drive by current feedback PWM drive. Built in current limit, hall bias, short brake, FG output and reverse protection circuit. Low ON-Resistor. (RON=0.95Ω) 〈 Sled motor driver 〉 Efficient drive by current feedback PWM drive. Built in 2channel for stepping motor. 〈 Actuator driver, Loading driver 〉 Linear BTL drive system. 1/17 BD7902CFS Optical disc ICs !Absolute maximum ratings (Ta=25°C) Parameter POWER MOS power suuply voltage Preblock/BTL powerblock power supply voltage PWM control block power supply voltage Power dissipation Operating temperature range Storage temperature Symbol SPVM1,2,SLRNF1,2 VCC,SLVDD,AVM...