A4953ELJTR-T

Overview

The A4953ELJTR-T is a fully integrated single full-bridge DMOS motor driver IC designed for brushed DC motor applications. It supports an operating voltage range of 8V to 40V and delivers a peak output current of ±2A. The device features internal fixed off-time PWM control, synchronous rectification for low power consumption, and comprehensive protection mechanisms including overcurrent, short-circuit, and thermal shutdown. Packaged in an 8-SOIC with exposed pad, it operates within a junction temperature range of -40°C to 150°C.

Feature Summary

• Integrated full-bridge DMOS driver with internal fixed off-time PWM control
• Synchronous rectification circuitry for reduced power dissipation during PWM operation
• Comprehensive protection against overcurrent, motor lead shorts, and thermal overload

Applications

• Brushed DC motor speed and direction control
• General purpose motor drive systems
• Industrial automation actuators

Procurement Notes

Verify the specific suffix ELJTR-T corresponds to the tape and reel packaging format required for your assembly line. Confirm that the commercial grade temperature rating (-40°C to 85°C case, -40°C to 150°C junction) aligns with your environmental specifications. Ensure the 8-SOIC-EP footprint matches your PCB design guidelines. Cross-reference the manufacturer's latest datasheet for any recent package or material compliance updates before finalizing procurement.

Selection Notes

Select this component when a compact solution for brushed DC motors requiring up to 2A peak current is needed. It is suitable for designs utilizing external PWM signals for speed regulation. Consider the A4950 if higher current capacity (3.5A) is required, or the A4952 if a different current threshold is preferred. Ensure the system voltage remains within the 8V to 40V operational window.

Part Context

This part belongs to the Allegro A495x family of fully integrated single full-bridge motor driver ICs. These devices are engineered to simplify motor control designs by combining logic, drivers, and protection circuits into a single package. The family targets cost-sensitive and space-constrained applications requiring reliable brushed DC motor management without external discrete components.

Replacement Considerations

Publicly confirmed substitutes include the CS9022, which offers compatible functionality with a peak current of 3.8A.