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L6243 датащи(PDF) 1 Page - STMicroelectronics |
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L6243 датащи(HTML) 1 Page - STMicroelectronics |
1 / 12 page L6243 L6243D VOICE COIL MOTOR DRIVER 12V/5V OPERATION PARKING FUNCTION FOR HARD DISK HEAD ACTUATOR OUTPUT CURRENT UP TO 2A DC, 2.5A PEAK LOW SATURATION VOLTAGE LOGIC AND POWER SUPPLY MONITOR LINEAR CONTROL THERMAL PROTECTION ENABLE FUNCTION CURRENT SENSE RESISTOR CONNEC- TIONS DESCRIPTION The L6243/D is a Bipolar IC developed for use in Hard Disk Head Actuator positioning applications. The Power Op-Amp Output Bridge, Differential Amplifier, and Error Amplifier, are controlled by TTL/CMOS, input compatible, Digital Logic, and an Analog Current Control Voltage. A simple RC compensation network, tied to the output of the Error Amp, will configure the system to work as a Transconductance Amplifier to drive a Voice Coil Motor in Linear Mode. Additional features include Power On Reset De- lay, Enable and Park, as well as a general pur- pose Operational Amplifier. A logic low at the Park input activates the parking function. Holding the Enable input low will disable the device by forcing the outputs into a tristate mode. Power Fail Monitors for the logic and power supplies in- itiate an automatic parking sequence during a power failure. A resistor programmed parking voltage enables a constant velocity head retract. This is advanced information on a new product now in development or undergoing evaluation. Details are subject to change without notice. July 1996 BLOCK DIAGRAM PLCC44 SO(24+2+2) ORDERING NUMBERS: L6243 L6243D 1/12 |
Аналогичный номер детали - L6243 |
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Аналогичное описание - L6243 |
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