L6232E Datasheet, PDF (1/10 Pages) STMicroelectronics – SPINDLE DRIVER

L6232E
SPINDLE DRIVER
1.5A MAXIMUM PEAK CURRENT
CONTROLLED SLEW RATE
CENTRAL CHARGE PUMP
PWM AND LINEAR MODES
CUTOFF TIME USER CONFIGURABLE
FAST, FREE-WHEELING DIODES ON CHIP
OVER-TEMPERATURE PROTECTION
BRAKE FUNCTION INPUT
DESCRIPTION
The L6232E is a triple half bridge driver intended
for use in brushless DC motor applications. This
part can be used to form the power stage of a
three-phase, brushless DC motor control loop,
and is especially useful for disk drive applications.
Power drivers are Integrated DMOS transistors
and feature fast recirculating diodes as an integral
BLOCK DIAGRAM
PLCC21+7
ORDERING NUMBER: L6232E
part of their structure. The logic inputs are TTL-
level compatible, with internal pull-up, allowing in-
terfacing to open collector outputs. All necessary
circuitry to perform PWM and linear motor speed
control is included. A central charge pump is util-
ized to drive the upper DMOS transistors, and
also to power the braking function. The L6232E is
packaged in PLCC28.
October 1996
1/10
This is advanced information on a new product now in development or undergoing evaluation. Details are subject to change without notice.