LMD18200T Datasheet, PDF (1/14 Pages) National Semiconductor (TI) – 3A, 55V H-Bridge

LMD18200
February 7, 2011
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 pro-
cess 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 accom-
modates peak output currents up to 6A. An innovative circuit
which facilitates low-loss sensing of the output current has
been implemented.
Features
■ ^{Delivers up to 3A continuous output}
■ ^{Operates at supply voltages up to 55V}
■ ^{Low R}_DS^{(ON) typically 0.33Ω per switch at 3A}
■ ^{TTL and CMOS compatible inputs}
■ ^{No “shoot-through” current}
■ ^{Thermal warning flag output at 145°C}
■ ^{Thermal shutdown (outputs off) at 170°C}
■ ^{Internal clamp diodes}
■ ^{Shorted load protection}
■ ^{Internal charge pump with external bootstrap capability}
Applications
■ ^{DC and stepper motor drives}
■ ^{Position and velocity servomechanisms}
■ ^{Factory automation robots}
■ ^{Numerically controlled machinery}
■ ^{Computer printers and plotters}
Functional Diagram
FIGURE 1. Functional Block Diagram of LMD18200
1056801
© 2011 National Semiconductor Corporation 10568
www.national.com