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LMD18201T/NOPB
3-Amp, 55 Volt H-Bridge 11-TO-220 -40 to 125
LMD18201
www.ti.com SNVS092D–APRIL 1998–REVISED APRIL 2013
LMD18201 3A, 55V H-Bridge
Checkfor Samples: LMD18201
1FEATURES APPLICATIONS Delivers upto 3A Continuous Output • DC and Stepper Motor Drives Operatesat Supply Voltages upto 55V • Position and Velocity Servomechanisms Low RDS(ON) Typically 0.33Ω per Switchat 3A • Factory Automation Robots TTL and CMOS Compatible Inputs • Numerically Controlled Machinery No “Shoot-Through” Current • Computer Printers and Plotters Thermal Warning Flag Outputat 145°C DESCRIPTION• Thermal Shutdown (Outputs Off)at 170°C The LMD18201isa 3A H-Bridge designed for motion
• Internal Clamp Diodes control applications. The deviceis built usinga multi-
• Shorted Load Protection technology process which combines bipolar and
CMOS control circuitry with DMOS power devices on
• Internal Charge Pump with External Bootstrap the same monolithic structure. The H-Bridge
Capability configurationis ideal for driving DC and stepper
motors. The LMD18201 accommodates peak output
currents upto 6A. Current sensing can be achieved
viaa small sense resistor connectedin series with
the power ground lead. For current sensing without
disturbing the path of current to the load, the
LMD18200is recommended.
Functional Diagram1. Functional Block Diagramof LMD18201
