Dual-channel H-bridge Motor Driver Chip AT8841,2 Bits Current Control, Providing 4 Current Steps

时间： 2021-07-18 来源：Zhongke Microelectronics

技术问答

Hangzhou Zhongke Electronics' AT88141 provides an integrated motor driver solution for printers and other electromechanical integration applications. AT8812C has two H-bridge drivers with a maximum output of 32V±2.5A. It can drive two DC brushed motors, or a bipolar stepper motor, or solenoids and other inductive loads. The bipolar stepping motor can run in full step, 2-subdivision, 4-subdivision, or realize high subdivision by software.

The power output module of each H-bridge of AT8841 is composed of N-type power MOSFET, called the H-bridge driver. Each bridge contains a rectifier circuit and a current-limiting circuit. which can realize independent half-bridge control and programmable attenuation mode.

Internal shutdown function includes overcurrent protection, short circuit protection, undervoltage

lockout protection and overtemperature protection, and provides a fault detection output pin.

AT8841 provides an ETSSOP28 package with an exposed pad, which can effectively improve the heat

dissipation performance, and is a lead-free product that meets environmental protection requirements.

Features

●Dual-Channel H-bridge Motor Driver

●Drive Two DC Brushed Motors or One Stepper Motor

●Low RDS(ON) resistance，360mΩ (HS+LS)

●2.5A Drive Output

●Wide Voltage Supply，8V-32V

●2 bits Current Control, Providing 4 Current Steps

●PWM control interface

●Internal 3.3V Reference Voltage Output

●Over-temperature Shutdown Circuit

●Short Circuit Protection

●Undervoltage Lockout Protection

Application

●POS Printer

●Stage Lighting

●Office Automation Equipment

●Game Console

●Robot

Package

Typical Application Diagram

Selection Guide

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本文由星晴123转载自Zhongke Microelectronics，原文标题为:Dual-channel H-bridge Motor Driver Chip AT8841，本站所有转载文章系出于传递更多信息之目的，且明确注明来源，不希望被转载的媒体或个人可与我们联系，我们将立即进行删除处理。

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