A3959SLP

Overview

The A3959SLP is a fully integrated brushed DC motor driver manufactured by Allegro MicroSystems. It features a half-bridge output configuration with two outputs, utilizing DMOS technology to deliver a continuous output current of 3A. The device supports a supply voltage range of 4.5V to 5.5V and handles load voltages from 9.5V up to 50V. It is housed in a 28-TSSOP-EP package with an exposed pad for thermal management. The component operates within a junction temperature range of -20°C to 150°C.

Feature Summary

• Fully integrated control and power stage design
• Internal PWM current regulation for precise motor control
• Built-in thermal shutdown and protection circuitry

Applications

• General purpose motor control systems
• Industrial automation actuators
• Consumer appliance drive circuits

Procurement Notes

Verify the specific suffix and tape/reel specifications against the manufacturer's latest documentation, as packaging formats may have changed. Confirm RoHS compliance status prior to ordering, as historical data indicates this variant may not meet current environmental standards. Ensure the 28-TSSOP-EP footprint matches the target PCB layout requirements.

Selection Notes

Select this component for applications requiring a robust 3A brushed DC motor solution with high voltage tolerance. The wide operating temperature range suits demanding environments. Consider the discontinued status when planning long-term production runs and evaluate alternative packages or newer series for future designs.

Part Context

This part belongs to the A3959 series of motor drivers from Allegro MicroSystems. It is designed for single-winding or simple half-bridge brushed DC motor applications. The device integrates logic interfaces and power DMOS switches into a compact surface-mount package, simplifying system architecture compared to discrete solutions.

Replacement Considerations

The datasheet explicitly lists the A3959SLPTR-T as an alternative packaging option for the same functional device. No other cross-model substitutes are confirmed in the provided public documentation.