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A3950

Part Number	A3950
Manufacturer	Allegro MicroSystems
Description	DMOS Full-Bridge Motor Driver
Published	Apr 13, 2007
Detailed Description	A3950 DMOS Full-Bridge Motor Driver Features and Benefits ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ Low RDS(on) outputs Overcurrent protection M...
Datasheet	A3950 PDF File

Overview

A3950 DMOS Full-Bridge Motor Driver Features and Benefits ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ Low RDS(on) outputs Overcurrent protection Motor lead short-to-supply protection Short-to-ground protection Sleep function Synchronous rectification Diagnostic output Internal undervoltage lockout (UVLO) Crossover-current protection Description Designed for PWM (pulse width modulated) control of dc motors, the A3950 is capable of peak output currents to ±2.
8 A and operating voltages to 36 V.
PHASE and ENABLE input terminals are provided for use in controlling the speed and direction of a dc motor with externally applied PWM control signals.
Internal synchronous rectification control circuitry is provided to lower power dissipation during PWM operation.
Internal circuit protection includes motor lead short-tosupply / short-to-ground, thermal shutdown with hysteresis, undervoltage monitoring of VBB and VCP, and crossover-current protection.
Package EU, 16 pin QFN with Exposed Thermal Pad Packages: Package LP, 1...

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