TILMD18200T/NOPB
Overview
The LMD18200T/NOPB is a fully integrated 3A H-Bridge motor driver designed for motion control applications. It combines Bi-CMOS control circuitry with DMOS power switches on a single monolithic chip, supporting load voltages from 12V to 55V. The device is specifically engineered to drive brushed DC or bipolar stepper motors while providing integrated thermal warning and current sensing outputs.
Why Choose This Part
The DMOS output stage provides high efficiency with low Rds(on) and eliminates the need for external commutating diodes. It features a dedicated current sensing output and a thermal flag pin, allowing the host controller to monitor system health in real-time. The TO-220-11 package facilitates easy heat sinking for continuous 3A operation across a wide 12V to 55V range.
Applications
Key Specifications
Getting Started
Designers should provide adequate heat sinking for the TO-220 package and place a high-quality bypass capacitor close to the Vcc pin to handle inductive spikes. The device uses a parallel interface where PWM signals control speed and high/low logic levels control direction and braking. Evaluation can be performed using a breadboard with the staggered lead version or by integrating it into a custom PCB with a large copper pour for the thermal tab.
STMicroelectronics
