A4950ELJTR-T
Overview
The A4950ELJTR-T is a DMOS full-bridge motor driver designed for pulse-width modulated (PWM) control of brushed DC motors. It operates over a wide voltage range from 8V to 40V and can deliver up to 3.5A of peak output current. The device integrates internal fixed off-time PWM current control and synchronous rectification to reduce power dissipation during PWM operation.
Why Choose This Part
The A4950 offers robust protection features including overcurrent, motor lead short-to-ground, and short-to-battery protection. Its low RDS(on) DMOS outputs and synchronous rectification maximize efficiency, while a 10uA sleep mode ensures low power consumption when the motor is inactive.
Applications
Key Specifications
Getting Started
Designers should focus on the thermal management of the 8-SOIC exposed pad package to handle the 3.5A peak current. The peak current limit is set by an external sense resistor and a reference voltage applied to the VREF pin. Ensure high-frequency ceramic bypass capacitors are placed close to the VBB and GND pins for stable PWM operation.
Also Consider
