L6243

Manufacturer Part NumberL6243
DescriptionMOSFET & Power Driver ICs DISC BY STM 2/01 PLCC44 VOICE COIL DR
ManufacturerSTMicroelectronics
L6243 datasheets
 


Specifications of L6243

Lead Free Status / Rohs StatusLead free / RoHS Compliant  
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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
BLOCK DIAGRAM
July 1996
This is advanced information on a new product now in development or undergoing evaluation. Details are subject to change without notice.
L6243D
VOICE COIL MOTOR DRIVER
PLCC44
SO(24+2+2)
ORDERING NUMBERS:
L6243
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.
L6243
L6243D
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