AN8783SB

ICs for Compact Disc/CD-ROM Player AN8783SB 4-channel linear driver IC for CD/CD-ROM drive s Overview The AN8783SB employs one channel of power op-amp. system and three channels of H-bridge system. Two channels out of three channels of Hbridge method are a current feedback system. So this IC is optimum for driving an actuator and a motor of CD/CD-ROM drive. It comes with a surface mount package which excels in a heat radiation characteristic. 18.4±0.2 (5.15) (4.8) 28 22 21 15 (1.315) 8.3±0.2 10.93±0.30 Unit: mm 0.30–0.05 +0.10 0° to 10° 1 7 8 14 0.65±0.20 2.7±0.2 s Features Little phase delay due to current feedback system (2-channel for actuator) 4 modes of forward, reverse rotations, braking and standby can be selected from channels for loading motor (H-bridge method) by a digital signal from a microcomputer. Wide output dynamic range regardless of reference voltage of the system Setting the input level of a driver by an external resistor is possible. PC (power cut) function built-in (common for ch. 1, ch. 3 and ch. 4) Thermal shut-down circuit built-in (with hysteresis) (1.2) 0.8 (6.4) 0.35+0.10 –0.05 Seating plane HSOP042-P-0400 s Applications CD/CD-ROM drive 0.1±0.1 1 AN8783SB s Block Diagram PVC1 PVC2 ICs for Compact Disc/CD-ROM Player PVC3 PVC4 8 D1+ D1− D2− D2+ D3+ D3− D4+ D4− S3 21 20 18 17 15 16 14 12 13 5 10 9 1/2 PVCC PGND1 BTL linear driver ch. 2 BTL linear driver ch. 3 BTL linear driver ch. 4 6 11 PGND2 7 ...