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LMD18200T

3A 55V H-bridge motor driver, DMOS, thermal flag, current sense, TO-220-11

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Manufacturer Part：

LMD18200T

Package：

TO-220-11 (20.0 x 4.5 x 10.7mm)

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Description

Product Overview

The LMD18200T from Texas Instruments is a 3A, 55V H-bridge motor driver built with BiCMOS and DMOS technology. It features TTL/CMOS compatible inputs, thermal warning at 145C, thermal shutdown at 170C, internal clamp diodes, and current sense output in an 11-pin TO-220 package.

Key Specifications

Manufacturer Texas Instruments
Type Full H-Bridge Motor Driver
Supply Voltage 12V to 55V
Continuous Output Current 3A
Peak Output Current 6A (200ms)
RDS(ON) per Switch 0.33Ohm typ @ 3A
Control Mode PWM
Control Interface Hardware (GPIO)
Thermal Warning 145C flag output
Thermal Shutdown 170C (outputs off)
Current Sense Output 377uA/A typical
Package TO-220-11 (20.0 x 4.5mm)
Operating Temperature -40C to +125C

Features

  • 3A continuous, 6A peak output current
  • Operates at supply voltages up to 55V
  • Low RDS(ON): 0.33Ohm per switch typical
  • TTL and CMOS compatible inputs
  • No shoot-through current
  • Thermal warning flag at 145C
  • Thermal shutdown at 170C
  • Internal clamp diodes for inductive loads
  • Shorted load protection
  • Internal charge pump with external bootstrap
  • Current sense output for monitoring

Applications

  • DC and stepper motor driving
  • Industrial motion control
  • Robotics and automation
  • Building automation actuators

The Texas Instruments LMD18200T is a 3A H-bridge designed for motion control applications, built using a multi-technology process combining bipolar and CMOS control circuitry with DMOS power devices on the same monolithic structure. It is ideal for driving DC and stepper motors, accommodating peak output currents up to 6A. An innovative circuit facilitates low-loss sensing of the output current at 377uA/A typical. The device includes internal clamp diodes for driving inductive loads, a charge pump with external bootstrap capability, and comprehensive thermal management with a warning flag at 145C and shutdown at 170C. The TTL/CMOS compatible direction, brake, and PWM inputs simplify microcontroller interfacing.

The LMD18200T operates as a full H-bridge motor driver with four key subsystems: 1) H-Bridge Power Stage: Four DMOS switches (two sourcing, two sinking) form the H-bridge. The low RDS(ON) of 0.33Ohm per switch minimizes conduction losses. Anti-shoot-through circuitry prevents both switches on the same half-bridge from conducting simultaneously. 2) Control Logic: Three logic inputs (Direction, Brake, PWM) control the bridge state. Direction sets current flow, Brake shorts the motor terminals for rapid deceleration, and PWM controls speed through duty-cycle modulation. 3) Current Sense: A dedicated output provides a current proportional to the motor current (377uA/A), enabling external current monitoring and closed-loop control without a sense resistor in the motor path. 4) Protection: Thermal warning flag at 145C alerts the system, thermal shutdown at 170C disables outputs, and internal clamp diodes protect against inductive kickback.

Pin Name Type Function
1 BOOT1 Capacitor Bootstrap capacitor 1
2 OUTPUT 1 Output H-bridge output 1
3 DIRECTION Input Direction control (TTL/CMOS)
4 BRAKE Input Brake control (TTL/CMOS)
5 PWM Input PWM speed control (TTL/CMOS)
6 VS Power Motor supply (12V-55V)
7 GND Ground Ground (connected to tab)
8 CURRENT SENSE Output Current sense output (377uA/A)
9 THERMAL FLAG Output Thermal warning (active low at 145C)
10 OUTPUT 2 Output H-bridge output 2
11 BOOT2 Capacitor Bootstrap capacitor 2
  • DC motor bidirectional speed and position control
  • Stepper motor drive in CNC and 3D printers
  • Industrial actuator control with current monitoring
Manufacturer Part Number Package Notes
TI LMD18201T/NOPB TO-220-11 Similar, with different logic options
TI DRV8801EVM HTSSOP Newer 2.8A H-bridge driver
Allegro A3959SLBTR-T 16-SOIC 3A H-bridge with internal sense
ST VNH5019ATR-E MultiPowerSO-30 30A automotive H-bridge
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Certification
We have obtained a number of professional certifications and built our own professional testing laboratory.This ensures that every product we deliver to our customers meets the highest quality requirements.We conduct tests in strict accordance with procedures to ensure stable product quality and accurate parameters.To guarantee genuine original parts, we also cooperate with reliable third-party testing institutions for strict quality inspection.We always attach great importance to quality and fully comply with industry standards, relevant regulations, and ISO 9001:2015 requirements.

Shipping & Payment

All electronic components we source from our partnered supply chains go through strict incoming inspections.Through careful testing, we ensure everything delivered to customers is genuine original parts and meets quality requirements.In addition, we keep complete inspection records to make the entire supply chain process clear and traceable.

Certification
We have obtained a number of professional certifications and built our own professional testing laboratory.This ensures that every product we deliver to our customers meets the highest quality requirements.We conduct tests in strict accordance with procedures to ensure stable product quality and accurate parameters.To guarantee genuine original parts, we also cooperate with reliable third-party testing institutions for strict quality inspection.We always attach great importance to quality and fully comply with industry standards, relevant regulations, and ISO 9001:2015 requirements.

Service & Packaging

All electronic components we source from our partnered supply chains go through strict incoming inspections.Through careful testing, we ensure everything delivered to customers is genuine original parts and meets quality requirements.In addition, we keep complete inspection records to make the entire supply chain process clear and traceable.

Certification
We have obtained a number of professional certifications and built our own professional testing laboratory.This ensures that every product we deliver to our customers meets the highest quality requirements.We conduct tests in strict accordance with procedures to ensure stable product quality and accurate parameters.To guarantee genuine original parts, we also cooperate with reliable third-party testing institutions for strict quality inspection.We always attach great importance to quality and fully comply with industry standards, relevant regulations, and ISO 9001:2015 requirements.

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