KA3017

www.fairchildsemi.com KA3017 Spindle + 4-CH Motor Driver Features Built-in Power Save Circuit Built-in Current Limit Circuit Built-in Thermal Shutdown Circuit (TSD) Built-in Hall Bias Built-in FG Signal Output Circuit Built-in Rotational Direction Detecting Circuit Built-in Protection Circuit For Reverse Rotation Built-in Short Brake Circuit Built-in Normal OP-AMP Built-in 4-CH Balanced Transformerless (BTL) Driver Built-in BTL MUTE Circuit (CH1-2, CH3 and CH4) Corresponds to 3.3V DSP Description The KA3017 is a monolithic integrated circuit suitable for a 4-CH motor driver which drives the tracking actuator, focus actuator, sled motor, loading motor and 3-phase BLDC spindle motor of the MDP/CAR-MD/CAR-NAVIGATION system. 48-QFPH-1414 Target Application Mini Disk Player Digital Video Disk Player Car Mini Disk Player Car Navigation System Ordering Information Device KA3017 Package 48-QFPH-1414 Operating Temp. -35°C ~ +85°C Rev. 1.0.3 ©2002 Fairchild Semiconductor Corporation KA3017 Pin Assignments BTLSNGD MUTE12 MUTE3 38 FIN (GND) 48 47 46 45 44 43 42 41 40 39 37 VH MUTE4 AVM4 BIAS H3 + H2 + H1 + H3 − H2 − H1 − 1 36 DO4 + DO4 − AVM3 FG ECR 2 3 35 34 EC 4 33 DO3 + DO3 − BTLPGND2 (GND) FIN VCC2 PC1 5 32 31 6 (GND) FIN KA3017 7 30 SIGGND BTLPGND1 VM CS1 8 9 29 28 DO2 + DO2 − DO1 + DO1 − DI1 SS 10 11 27 DIR SB 26 25 12 13 PWRGND 14 A3 15 A2 16 A1 17 OPIN+ 18 OPIN− (GND) FIN 19 OPOU...