AT5654

AT5654 4-Channel BTL Motor Driver for CD-ROM Features ˙AT5654 is a 4 channel driver for optical disc motor driver. Dual channel current feedback type drivers are built in, in addition to dual channel motor driver. ˙Separating Vcc into Pre-power of sled motor, Power of loading motor and Power of actuator, can make batter power efficiency, by low supply voltage drive. ˙Stand-by mode built in. ˙Thermal shutdown circuit on chip. ˙Compatible with BA5954 Description The AT5654 is a 4-channel BTL driver IC for driving the motors and actuators in products such as CD-ROM/DVD-ROM/DVD-Player drives. Two of the channels use current feedback to minimize the current phase shift caused by the influence of load inductance. Applications CD-ROM drives, DVD drives, DVD-ROM drives. Block Diagram 10F-1, No.55, Tung Kuang Road, Hsinchu, Taiwan, R.O.C. Tel: 886-3-575-3058 Fax: 886-3-575-3015 1 Email: [email protected] http://www.aimtron.com.tw 01/12/26 AT5654 4-Channel BTL Motor Driver for CD-ROM Pin Descriptions Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 Pin name VINFC CFCerr1 CFCerr2 VINSL + VINSL VOSL VNFFC Vcc PVcc1 PGND VOSL VOSL + VOFC VOFC + VOTK + VOTK VOLD + VOLD PGND VNFTK PVcc2 GND VINTK CTKerr2 CTKerr1 VINTK BIAS STBY Function Focus drive input For connection of capacitor for the error amp filter For connection of capacitor for the error amp filter Op-amp input (+) for the sled driver Op-amp input (-) for the sled driver Op-amp output ...