LMD18201T/NOPB

Overview

The LMD18201T/NOPB is a bipolar motor driver manufactured by Texas Instruments, designed for motion control applications. It integrates Bi-CMOS and DMOS technologies on a single monolithic structure to provide full integration of control and power stages. The device features an H-bridge configuration with two half-bridge outputs, supporting a continuous output current of 3 A and peak currents up to 6 A. It operates within a supply voltage range of 12 V to 55 V and handles load voltages from 12 V to 55 V. The component is housed in a TO-220-11 through-hole package and supports parallel interfaces. It functions effectively for driving brushed DC and bipolar stepper motors.

Feature Summary

• Integrates Bi-CMOS control circuits with DMOS power devices on a single monolithic structure
• Provides full integration of both control logic and power stages for simplified design
• Features an H-bridge configuration suitable for driving various motor types
• Supports current detection via external sensing resistors connected to the ground line

Applications

• Brushed DC motor control systems
• Bipolar stepper motor drives
• Hydraulic pump actuation
• Linear actuator positioning

Procurement Notes

Verify RoHS compliance status as documentation indicates variations between standard and NOPB suffixes. Confirm lead times due to reported extended delivery periods. Ensure the specific part number matches the required thermal and electrical specifications for the target application environment.

Selection Notes

Select this component when a fully integrated H-bridge solution is required for high-current motor applications. Consider the TO-220-11 package for adequate thermal dissipation without additional heatsinking in moderate loads. Verify that the parallel interface aligns with the system's control logic requirements.

Part Context

This device belongs to the LMD18201 series of motor drivers. It is distinct from the LMD18200, which offers low-side outputs instead of the H-bridge configuration found in the LMD18201. Both share similar technological foundations but differ in output topology and specific use cases.

Replacement Considerations

• LMD18201T/LF14

FAQ

How is current detection implemented in the LMD18201?

Current detection is achieved by placing a small sensing resistor in series with the power ground line.

What is the maximum peak output current capability?

The device can deliver peak output currents up to 6 A.