TEA3718

TEA3718S

STEPPER MOTOR DRIVER

ADVANCE DAT A

HALF-STEP AND FULL-STEP MODE

BIPOLAR DRIVE OF STEPPER MOTOR FOR

MAXIMUM MOTOR PERFORMANCE

BUILT-IN PROTECTION DIODES

WIDE RANGE OF CURRENT CONTROL 5 TO

1500 mA

WIDE VOLTAGE RANGE 10 TO 50 V

DESIGNED FOR UNSTABILIZED MOTOR

SUPPLY VOLTAGE

CURRENT LEVELS CAN BE SELECTED IN

STEPS OR VARIED CONTINUOUSLY

THERMAL OVERLOAD PROTECTION

ALARM OUTPUT OR PRE-ALARM OUTPUT

(see internal table)

DESCRIPTION

The TEA3718 and TEA3718Sare bipolar monolithic

integrated circuits intended to control and drive the

current in one winding of a bipolar stepper motor.

The circuits consist of an LS-TTL compatible logic

input, a current sensor, a monostable and an output

stage with built-in protection diodes. Two TEA3718

or TEA3718S and a few external components form

a complete control and drive unit for LS-TTL or mi-

croprocessor-controlled stepper motor systems.

Powerdip

12 +2 +2

MULTIWA TT-15

TEA3718SP

(Multiwatt-15)

TEA3718SFP

(SO-20)

TEA3718DP

TEA3718SDP

(Powerdip 12+2+2)

PIN CONNECTIONS (top views)

ORDERING NUMBERS :

TEA3718SDP

TEA3718DP

ORDERING NUMBER : TEA3718SP

1/16

This is advanced information on a new product now in development or undergoing evaluation. Details are subject to change without notice.

SO-20

ORDERING NUMBER :

TEA3718SFP

December 1991