A3995中文资料双DMOS全桥PWM电机驱动器数据手册Allegro规格书

描述 Description

DISCONTINUED:This device is no longer in production. The device should not be purchased for new design applications. Samples are no longer available. Date of status change: July 1, 2019.

Recommended Substitutions: A5995GEVSR-T

The A3995 is designed to drive two DC motors at currents up to 2.4 A. Capable of drive voltages up to 36 V, the A3995 includes two independent fixed off-time PWM current regulators that operate in either fast or slow decay mode, as determined by the MODE input. Internal synchronous rectification control circuitry is provided to improve power dissipation during PWM operation.

Protection features include: thermal shutdown with hysteresis, undervoltage lockout (UVLO) and crossover current protection. Special power-up sequencing is not required.

The A3995 is supplied in a 36 pin QFN package (suffix EV) with exposed power tab for enhanced thermal performance. It has a 6 mm × 6 mm footprint, with a nominal overall package height of 0.90 mm, and is lead (Pb) free, with 100% matte tin leadframe plating.

特性 Features

• 2.4 A DC motor driver
• Internal undervoltage lockout (UVLO)
• Crossover-current protection
• Very thin profile QFN package

简介

A3995属于集成电路（IC）的电机驱动器控制器。由Allegro制造生产的A3995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。