L6219

STEPPER MOTOR DRIVER

ABLE TO DRIVE BOTH WINDINGS OF BIPO-

LAR STEPPER MOTOR

OUTPUT CURRENT UP TO 750mA EACH

WINDING

WIDE VOLTAGE RANGE 10V TO 46V

HALF-STEP, FULL-STEP AND MICROSTEPP-

ING MODE

BUILT-IN PROTECTION DIODES

INTERNAL PWM CURRENT CONTROL

LOW OUTPUT SATURATION VOLTAGE

DESIGNED FOR UNSTABILIZED MOTOR

SUPPLY VOLTAGE

INTERNAL THERMAL SHUTDOWN

DESCRIPTION

The L6219 is a bipolar monolithic integrated cir-

cuits intended to control and drive both winding of

a bipolar stepper motor or bidirectionally control

two DC motors.

The L6219 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 46V and including four diodes for cur-

rent recirculation.

A cross conduction protection is provided to avoid

simultaneous cross conduction during switching

current direction.

An internal pulse-width-modulation (PWM) con-

trols the output current to 750mA with peak start-

up current up to 1A.

Wide range of current control from 750mA (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.

October 2001

®

Powerdip 20+2+2

SO20+2+2

ORDERING NUMBERS:

L6219

L6219DS

BLOCK DIAGRAM

1/9