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3973

Part Number	3973
Manufacturer	Allegro MicroSystems
Description	DUAL DMOS FULL-BRIDGE MICROSTEPPING PWM MOTOR DRIVER
Published	Mar 30, 2005
Detailed Description	3973 PRELIMINARY INFORMATION (Subject to change without notice) December 1, 2000 CHARGE PUMP DUAL DMOS FULL-BRIDGE MICR...
Datasheet	3973 PDF File

Overview

3973 PRELIMINARY INFORMATION (Subject to change without notice) December 1, 2000 CHARGE PUMP DUAL DMOS FULL-BRIDGE MICROSTEPPING PWM MOTOR DRIVER Designed for pulse-width modulated (PWM) current control of bipolar microstepping stepper motors, the A3973SB and A3973SLB are capable of continuous output currents to ±1 A and operating voltages to 35 V.
Internal fixed off-time PWM current-control timing circuitry can be programmed via a serial interface to operate in slow, fast, and mixed current-decay modes.
The A3973SB (DIP) and the A3973SLB (SOIC) are electrically identical and differ only in package style.
The desired load-current level is set via the serial port with two 6-bit linear DACs i...

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