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
TheTEA3718 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.
PIN CONNECTIONS
(top views)
Powerdip
12 + 2 + 2
SO-20
ORDERING NUMBERS :
TEA3718SDP
TEA3718DP
ORDERING NUMBER :
TEA3718SFP
MULTIWATT-15
ORDERING NUMBER :
TEA3718SP
TEA3718SP
(Multiwatt-15)
TEA3718SFP
(SO-20)
TEA3718DP
TEA3718SDP
(Powerdip 12+2+2)
December 1991
1/16
This is advanced information on a new product now in development or undergoing evaluation. Details are subject to change without notice.
STMICROELECTRONICS [ STMICROELECTRONICS ]
