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8958
LOGIC SUPPLY INHIBIT UV1 UV2 LIMIT GROUND AB GROUND AB PARK VOLTAGE SENSE IN– IN A+ IN A– OUT A 1 2 3 4 5 6 7 8 9 9 B 10 11 12 1.5 V + V
CC
VOICE COIL MOTOR DRIVER
24 23 22 21 20 19 18 17 SENSE OUT PARK DRIVE PARK GROUND PWR OK GROUNDAB GROUNDAB SENSE IN+ IN B+ IN B– LOAD SUPPLY OUT B
Providing control and drive of the voice coil motor used for head positioning in disk drive applications, the A8958CLB is a full-bridge driver which can be configured so that its output current is a direct function of an externally applied control voltage or current. This linear current control function is supplemented by additional circuitry to protect the heads and the data disk during system failure or normal system shutdown.