A3949数据手册集成电路（IC）的电机驱动器控制器规格书PDF

描述 Description

Designed for PWM (pulse width modulated) control of dc motors, the A3949 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 reduce power dissipation during PWM operation.

Internal circuit protection includes thermal shutdown with hysteresis, undervoltage monitoring of VBB and VCP, and crossover current protection.

The A3949 is supplied in a power package, a 16-pin plastic SOIC with a copper batwing tab (part number suffix LB). The packages are lead (Pb) free, with 100% matte tin leadframes.

Also see: A3950 DMOS Full-Bridge Motor Driver.

This device is no longer in production. The device should not bepurchased for new design applications. Samples are no longer available.Date of status change: June 2, 2014. Recommended Substitutions: A3950SLPTR-TFor existing customer transition, and for new customers or new applications, contact Allegro Sales.

 

特性 Features

• Single supply operation
• Very small outline package
• Low RDS(ON) outputs
• Sleep function
• Internal UVLO
• Crossover current protection
• Thermal shutdown protection

简介

A3949属于集成电路（IC）的电机驱动器控制器。由制造生产的A3949电机驱动器，控制器产品属于电机驱动器和控制器电源管理集成电路 (PMIC) 系列，可用于控制或操作从某电源施加到电机或相关机电执行器的电源。所实现的具体功能和特性集根据预期负载和预期应用的特性有很大差异，范围从用于有刷电机的简单开环速度控制到基于步进电机的高级闭环运动控制。