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UDN2916A Datasheet(PDF) 1 Page - STMicroelectronics |
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UDN2916A Datasheet(HTML) 1 Page - STMicroelectronics |
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1 / 8 page  UDN2916A STEPPER MOTOR DRIVER ADVANCE DATA ABLE TO DRIVE BOTH WINDINGS OF BIPO- LAR STEPPER MOTOR OUTPUT CURRENT UP TO 750mA EACH WINDING WIDE VOLTAGE RANGE 10V TO 50V 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 UDN2916A is a bipolar monolithic integrated circuits intended to control and drive both winding of a bipolar stepper motor or bidirectionally con- trol two DC motors. The UDN2916A 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 50V 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 direc- tion. A thermal protection circuitry disables the outputs if the chip temperature exceeds safe operating limits. ThAdvanced information on a new product now in development or undergoing evaluation. Details are subject to change without notice. November 1991 Powerdip 20+2+2 ORDERING NUMBER: UDN2916A BLOCK DIAGRAM 1/8 |
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Similar Description - UDN2916A |
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