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LMD18200_05

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LMD18200_05 数据手册

April 2005

LMD18200

3A, 55V H-Bridge

General Description

The LMD18200 is a 3A H-Bridge designed for motion control

applications. The device is built using a multi-technology

process which combines bipolar and CMOS control circuitry

with DMOS power devices on the same monolithic structure.

Ideal for driving DC and stepper motors; the LMD18200

accommodates peak output currents up to 6A. An innovative

circuit which facilitates low-loss sensing of the output current

has been implemented.

n No “shoot-through” current

n Thermal warning flag output at 145˚C

n Thermal shutdown (outputs off) at 170˚C

n Internal clamp diodes

n Shorted load protection

n Internal charge pump with external bootstrap capability

Applications

n DC and stepper motor drives

n Position and velocity servomechanisms

n Factory automation robots

Features

n Delivers up to 3A continuous output

n Operates at supply voltages up to 55V

n Low R_DS(ON) typically 0.3Ω per switch

n TTL and CMOS compatible inputs

n Numerically controlled machinery

n Computer printers and plotters

Functional Diagram

01056801

FIGURE 1. Functional Block Diagram of LMD18200

DS010568

www.national.com

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