L6219DSA_08 Datasheet, PDF (1/15 Pages) STMicroelectronics – Stepper motor driver for automotive range

L6219DSA
Stepper motor driver for automotive range
Features
■ Able to drive both windings of bipolar stepper
motor
■ Output current up to 750 mA each winding
■ Wide voltage range: 10 V to 46 V
■ Half-step, full-step and microstepping mode
■ Built-in protection diodes
■ Internal PWM current control
■ Low output saturation voltage
■ Designed for unstabilized motor supply voltage
■ Internal thermal shutdown
Description
The L6219DSA is a bipolar monolithic integrated
circuits intended to control and drive both winding
of a bipolar stepper motor or bidirectionally control
two DC motors.
The L6219DSA with a few external components
form a complete control and drive circuit for LS-
TTL or microprocessor controlled stepper motor
system. The power stage is a dual full bridge
capable of sustaining 46 V and including four
diodes for current recirculation.
SO24 (20+2+2)
A cross conduction protection is provided to avoid
simultaneous cross conduction during switching
current direction.
An internal pulse-width-modulation (PWM)
controls the output current to 750 mA with peak
startup current up to 1 A.
Wide range of current control from 750 mA (each
bridge) is permitted by means of two logic inputs
and an external voltage reference. A phase input
to each bridge determines the load current
direction. A thermal protection circuitry disables
the outputs if the chip temperature exceeds safe
operating limits.
Table 1. Device summary
Order code
E-L6219DSA
E-L6219DSATR
Package
SO24
SO24
Packing
Tube
Tape & reel
April 2008
Rev 2
1/15
www.st.com
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