TEF3718

TEF3718S

October 1991

STEPPER MOTOR DRIVER

.

HALF AND FULL-STEP MODES

.

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 (TEF3718SP) OR PRE-

ALARM OUTPUT (TEF3718SSP)

DESCRIPTION

The TEF3718 and TEF3718S are bipolar monolithic

integrated circuits intended to control and drive the

current in one widing of a bipolar stepper motor. The

circuits consists of an LS-TLL - compatible logic in-

put, a current sensor, a monostable and an output

stage with built-in protection diodes. Two TEF3718

or TEF3718S 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

ORDER CODE :

TEF3718DP

TEF3718SDP

MULTIWATT 15

ORDER CODE :

TEF3718SP

TEF3718SSP

PIN CONNECTON

TEF3718

TEF3718S

TEF3718

TEF3718S

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