A3959SLPTR

Overview

The A3959SLPTR is a brushed DC motor driver manufactured by Allegro MicroSystems. It features a full-bridge output configuration with a maximum output current of 3A and a load voltage rating up to 50V. The device operates within a supply voltage range of 4.5V to 5.5V and supports junction temperatures from -20°C to 150°C. It utilizes DMOS technology and is housed in a 28-TSSOP package with an exposed pad for thermal management.

Feature Summary

• Integrates full bridge control and power stages for brushed DC motor applications
• Supports high operating junction temperature capability up to 150°C
• Utilizes DMOS technology for efficient power switching

Applications

• General purpose motor control systems
• Industrial automation actuators
• Consumer appliance motor drives

Procurement Notes

Verify the specific suffix (e.g., T for tape and reel) against your assembly requirements. Confirm that the 28-TSSOP-EP footprint matches your PCB layout, particularly the exposed pad thermal connection. Ensure supply voltage constraints are strictly observed to prevent device damage.

Selection Notes

Select this component when a single-chip solution for brushed DC motors is required with moderate current demands. It is suitable for designs needing integrated protection and control logic without external gate drivers. Consider thermal dissipation capabilities given the 3A output rating in the specified package.

Part Context

This part belongs to the A3959 series of motor drivers from Allegro MicroSystems. It is designed as a complete solution for driving brushed DC motors, combining logic control with high-current power outputs in a compact surface-mount package.

Replacement Considerations

Check datasheets for pin compatibility and electrical specifications before substituting. Verify if alternative packages or current ratings meet the design requirements.