A3949SLP

Overview

The A3949SLP is a fully integrated DMOS motor driver controller and power stage designed for parallel interface applications. It features a dual half-bridge output configuration capable of delivering up to 2.8A continuous current. The device operates within a supply voltage range of 8V to 36V and supports load voltages from 8V to 36V. Packaged in a 16-pin eTSSOP with an exposed thermal pad, it ensures efficient heat dissipation. The component functions reliably across a junction temperature range of -20°C to +150°C, suitable for surface-mount installation.

Feature Summary

• Integrates full control logic and power stages into a single DMOS solution
• Supports parallel interface operation for simplified system design
• Provides dual half-bridge outputs for versatile motor driving configurations

Applications

• Brushed DC motor control systems
• General-purpose motor driver implementations
• Industrial automation equipment requiring integrated drive solutions

Procurement Notes

Verify the specific ordering suffix and package variant when sourcing this component, as availability may vary by manufacturer revision. Confirm that the selected part matches the required 16-eTSSOP-EP footprint and thermal pad specifications for proper PCB layout compatibility. Ensure compliance with relevant environmental standards if applicable to the final assembly requirements.

Selection Notes

Select this component for applications requiring a compact, fully integrated solution for brushed DC motors. The high operating junction temperature rating allows for robust performance in thermally constrained environments. Consider the parallel interface requirement when designing the control circuitry, as it differs from serial communication protocols used in other driver families.

Part Context

This part belongs to Allegro MicroSystems' line of fully integrated motor drivers. It combines control logic with high-current DMOS power switches to reduce external component count. The A3949 series is distinct from bipolar stepper drivers like the A4985, focusing instead on brushed DC motor applications with a parallel interface architecture.

Replacement Considerations

The A3950SLPTR-T is documented as a parameter-equivalent substitute for the A3949SLP. Verify pinout compatibility and electrical specifications before substitution.