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www.fairchildsemi.com KA9258D 4-Channel Motor Driver Features · · · · · · · 1-phase, full-wave, linear DC motor driver Output gain adjustable Built in OP-amp Built in mute function Built in level shift circuit Built in thermal shutdown circuit (TSD) Operating range 6~13.2V Description The KA9258D is a monolithic integrated circuit, suitable for 4-CH motor driver which drives tracking actuator, focus actuator, sled motor and loading motor of CD/CD-ROM/ DVD system, and can also drive spindle motor of CD system. 28-SSOPH-375 Typical Applications · · · · Compact disk player (CDP) Video compact disk player (VCD) Automotive compact disk player Other compact disk media Ordering Information Device KA9258BD Package 28-SSOPH-375 Operating Temp. -40°C ~ +85°C -40°C ~ +85°C KA9258BDTF 28-SSOPH-375 Rev. 1.0.1 February. 2000. ©2000 Fairchild Semiconductor International 1 KA9258D 1 27 2 3 4 5 6 7 26 25 DI4.2 24 DI4.1 23 22 28 DO1.1 GND3 Pin Assignments DO1.2 DO4.2 DI1.1 DO4.2 DI1.2 REG REO VREF MUTE VCC2 FIN (GND) KA9258D GND1 DO2.1 DO2.2 GND2 OPOUT FIN (GND) 2 21 8 9 10 DI2.2 11 12 13 14 DI2.1 VCC1 20 19 18 17 16 15 DI3.2 DI3.1 DO3.2 DO3.1 OPIN (+) OPIN (-) KA9258D Pin Definitions Pin Number 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 DO1.1 DO1.2 DI1.1 DI1.2 REG REO MUTE GND1 DI2.1 DI2.2 DO2.1 DO2.2 GND2 OPOUT OPIN(-) OPIN(+) DO3.1 DO3.2 DI3.1 DI3.2 VCC1 VCC2 VREF DI4.1 DI4.2 DO4.1 DO4.2 GND3 I/O O O I I O I I I O O O I I O O I I I I I O O Drive output Drive output Drive input Drive input Regulator Regulator output Mute Ground 1 Drive input Drive input Drive output Drive output Ground 2 Op-amp output Op-amp input (-) Op-amp input (+) Drive output Drive output Drive input Drive input Supply voltage Supply voltage 2.5V bias voltage Drive input Drive input Drive output Drive output Ground 3 Pin Function Description 3 KA9258D Internal Block Diagram OPIN (-) 16 DO4.2 DO4.1 DO3.2 DO3.1 GND3 VREF VCC2 VCC1 DI4.2 DI4.1 DI3.2 DI3.1 OPIN(+) 15 - + 14 OPOUT 28 27 26 25 10k 24 23 22 21 20 10k 19 18 17 - Level shift - + + 10k - TSD 10k + - Level shift - + + Regulator 10k 50k - Level shift - + 10k 1 DO1.1 2 DO1.2 3 DI1.1 4 DI1.2 5 REG 6 REO 10k 7 MUTE 8 GND1 9 DI2.1 10k + Mute 50k 10k 10 DI2.2 11 DO2.1 10k + DO2.2 4 GND2 - - + Level shift - 12 + 13 KA9258D Equivalent Circuits Driver input Driver output VCC 10k 2.5V 50 3 10 19 25 11.8k 1 2 11 12 17 18 26 27 50 4 100 9 0.58k VREF1 20 24 20k Regulator Regulator output VCC VCC 53k 50 5 VCC 23k VCC VCC 2k 6 50 10k 10k 2k 10k Mute input Bias input VCC 100k 50 7 50k 23 50 50k 5 KA9258D Equivalent Circuits (Continued) Op amp output Op amp input VCC VCC VCC VCC VCC 50 14 50 50 15 50 50 16 4.8k 4.8k Absolute Maximum Ratings (Ta = 25°C) ° Parameter Supply voltage Power dissipation Operating temperature Storage temperature Maximum output current Symbol VCC PD TOPR TSTG IOMAX Value 18 1.7note -40