L6219R Datasheet, PDF (1/11 Pages) STMicroelectronics – STEPPER MOTOR DRIVER

L6219R
STEPPER MOTOR DRIVER
1 Features
■ ABLE TO DRIVE BOTH WINDINGS OF
BIPOLAR STEPPER MOTOR
■ OUTPUT CURRENT UP TO 500mA EACH
WINDING
■ WIDE VOLTAGE RANGE 4.5V TO 10V
■ 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
2 Description
The L6219R is a bipolar monolithic integrated circuits
intended to control and drive both winding of a bipolar
stepper motor or bidirectionally control two DC mo-
tors.The L6219R with a few external components
form a complete control and drive circuit for LS-TTL
or microprocessor controlled stepper motor sys-
tem.The power stage is a dual full bridge capable of
sustaining 10V and including four diodes for current
recirculation.A cross conduction protection is provid-
Figure 2. Block Diagram
Figure 1. Package
SO24 (2+2)
Table 1. Order Codes
Ecopack^{(1) Part Number}
Package
E-
L6219R
SO24
(1) Lead free package.
To order these kinds of products, add the “E-” prefix before the
respective Part Numbers (eg. E-XXXXX).
ed to avoid simultaneous cross conduction during
switching current direction.An internal pulse-width-
modulation (PWM) controls the output current to
500mA with peak start-up current up to 1A.
Wide range of current control from 500mA (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 ther-
mal protection circuitry disables the outputs if the
chip temperature exceeds safe operating limits.
May 2005
Rev. 2
1/11