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( File format: PDF, 702 Kbytes )
3-Amp, 55 Volt H-Bridge
National Semiconductor

Description
The LMD18201 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. The H-Bridge configuration is ideal for driving DC and stepper motors. The LMD18201 accommodates peak output currents up to 6A. Current sensing can be achieved via a small sense resistor connected in series with the power ground lead. For current sensing without disturbing the path of current to the load, the LMD18200 is recommended.
Features

???Delivers up to 3A continuous output
???Operates at supply voltages up to 55V
???Low RDS(ON) typically 0.33 per switch
???TTL and CMOS compatible inputs
???No "shoot-through" current
???Thermal warning flag output at 145C
???Thermal shutdown (outputs off) at 170C
???Internal clamp diodes
???Shorted load protection
???Internal charge pump with external bootstrap capability




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