A3949SLB-T

Overview

The A3949SLB-T is a DMOS full-bridge motor driver manufactured by Allegro MicroSystems. It operates on a single supply voltage ranging from 8V to 36V and delivers an output current of 2.8A. The device utilizes a 16-SOIC package with a width of 7.50mm. It functions within a junction temperature range of -20°C to 150°C. Key electrical parameters include low RDS(ON) outputs and internal protection mechanisms such as UVLO, crossover current protection, and thermal shutdown.

Feature Summary

• Integrates full bridge control and power stages for brush DC motors
• Includes sleep function for reduced power consumption
• Features internal overvoltage lockout and thermal shutdown protection

Applications

• Brushed DC motor control in industrial automation
• General purpose motor driving applications
• Consumer electronics requiring compact motor drivers

Procurement Notes

Verify the specific suffix T indicates tape and reel packaging configuration. Confirm RoHS compliance status as some listings indicate non-compliance. Check lead times due to potential obsolescence or discontinuation status associated with this component family.

Selection Notes

Select this component for applications requiring a compact solution for brushed DC motors. Ensure the operating voltage remains within the 8V to 36V range. Consider the 16-SOIC footprint for PCB layout constraints. Verify thermal management requirements given the 150°C junction temperature limit.

Part Context

This part belongs to the A3949 series of DMOS full-bridge motor drivers. It is designed for general-purpose applications. The series includes variants like A3949SLP and A3949SLPTR. It serves as a complete drive solution integrating logic and power stages.

Replacement Considerations

A3950SLPTR-T is listed as a parameter equivalent replacement.