A3949SLP-T

Overview

The A3949SLP-T is a fully integrated DMOS full-bridge motor driver manufactured by Allegro MicroSystems. It operates within a supply voltage range of 8V to 36V and delivers an output current of 2.8A. The device utilizes a 16-pin eTSSOP package with an exposed pad for thermal management. It supports parallel interface control and is designed for brushed DC motor applications. The component functions across a junction temperature range of -20°C to 150°C.

Feature Summary

• Fully integrated DMOS full-bridge architecture combining control logic and power stages
• Parallel interface for simplified digital control connections
• Exposed thermal pad design in 16-eTSSOP package for efficient heat dissipation

Applications

• Brushed DC motor control systems
• General purpose motor driver circuits
• Industrial automation actuators

Procurement Notes

Verify the specific suffix configuration, as the A3949SLP-T designation may indicate tape-and-reel packaging distinct from the standard tube variant. Confirm RoHS compliance status, as certain Allegro product lines have varying environmental declarations. Cross-reference the exact part number against the manufacturer's current lifecycle status to ensure availability and substitute options if the component is discontinued.

Selection Notes

Select this component for applications requiring a compact, high-current solution for brushed DC motors. The 2.8A rating suits moderate load requirements. Ensure the PCB layout accommodates the exposed pad for adequate thermal performance. Verify that the system voltage remains within the 8V to 36V operational window to prevent damage or malfunction.

Part Context

This part belongs to the A3949 family of motor drivers from Allegro MicroSystems. These devices are engineered for robust performance in automotive and industrial environments. The series emphasizes integration to reduce external component count and simplify board design while maintaining high reliability under varying thermal conditions.

Replacement Considerations

The A3950SLPTR-T is documented as a parameter-equivalent replacement option for the A3949SLP-T.