A3949SLPTR

Overview

The A3949SLPTR is a fully integrated DMOS full-bridge motor driver designed for brushed DC motor applications. It operates within a supply voltage range of 8V to 36V and delivers an output current of 2.8A. The component utilizes a 16-pin eTSSOP package with an exposed pad for thermal management. It supports parallel interface control and functions across a junction temperature range of -20°C to 150°C.

Feature Summary

• Fully integrated controller and power stage
• DMOS full-bridge topology
• Parallel interface compatibility

Applications

• Brushed DC motor control
• General purpose motion systems

Procurement Notes

Verify the specific suffix configuration, as the A3949SLPTR is listed as obsolete in multiple distributor records. Confirm availability of parameter-equivalent alternatives such as the A3950SLPTR-T if new production units are required. Ensure the selected replacement maintains the same 16-TSSOP footprint and electrical specifications to guarantee mechanical and functional compatibility in existing designs.

Selection Notes

Select this component for applications requiring a compact solution for brushed DC motors with moderate current demands up to 2.8A. The wide operating voltage range suits various industrial and consumer electronics environments. Consider the exposed pad requirement for adequate heat dissipation during continuous operation at higher loads or elevated ambient temperatures.

Part Context

This part belongs to Allegro MicroSystems' line of fully integrated motor drivers. It combines logic control and power switching in a single package to simplify PCB layout. The device is categorized under PMIC and motor controllers, specifically targeting brushed DC motor drives where space efficiency and integrated protection features are prioritized over discrete solutions.

Replacement Considerations

The A3950SLPTR-T is identified as a parameter-equivalent alternative.