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LMD18201

National Semiconductor
Part Number LMD18201
Manufacturer National Semiconductor
Description 3A / 55V H-Bridge
Published Apr 25, 2005
Detailed Description LMD18201 3A, 55V H-Bridge April 1998 LMD18201 3A, 55V H-Bridge General Description The LMD18201 is a 3A H-Bridge desig...
Datasheet PDF File LMD18201 PDF File

LMD18201
LMD18201


Overview
LMD18201 3A, 55V H-Bridge April 1998 LMD18201 3A, 55V H-Bridge General 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.
n n n n n n n 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 n n n n n DC and stepper motor drives Position and velocity servomechanisms Factory automation robots Numerically controlled machinery Computer printers and plotters Features n Delivers up to 3A continuous output n Operates at supply voltages up to 55V n Low RDS(ON) typically 0.
33Ω per switch Functional Diagram DS010793-1 FIGURE 1.
Functional Block Diagram of LMD18201 © 1999 National Semiconductor Corporation DS010793 www.
national.
com Connection Diagram and Ordering Information DS010793-2 Top View Order Number LMD18201T See NS Package Number TA11B www.
national.
com 2 Absolute Maximum Ratings (Note 1) If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications.
Total Supply Voltage (VS, Pin 6) Voltage at Pins 3, 4, 5 and 9 Voltage at Bootstrap Pins (Pins 1 and 11) Peak Output Current (200 ms) Continuous Output Current (Note 2) Power Dissipation (Note 3) Sense Voltage (Pin 7 to Pin 8) 60V 12V VOUT + 16V 6A 3A 25W +0.
5V to −1.
0V Power Dissipation (TA = 25˚C,...


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