A3958SB-T

Overview

The A3958SB-T is a discontinued brushless DC motor controller manufactured by Allegro MicroSystems. It operates on a 4.5V to 5.5V supply voltage and supports load voltages from 20V to 50V. The device delivers an output current of 2A using DMOS technology. It features a serial interface for control and is housed in a 24-SOIC package with a junction temperature range of -20°C to 150°C.

Feature Summary

• Integrates full control logic and power stages for brushless DC motors
• Utilizes a three-wire serial interface for programmable configuration
• Incorporates synchronous rectification to optimize power efficiency

Applications

• Brushless DC motor control systems
• General purpose industrial applications

Procurement Notes

Verify component authenticity as the A3958SB-T is officially discontinued. Confirm RoHS compliance status, as earlier versions may not meet current environmental standards. Validate that the specific package variant matches design requirements before integration into new hardware.

Selection Notes

Select this component only for legacy system maintenance or repair where original specifications are mandatory. Evaluate alternative devices if new designs require active manufacturing support or updated environmental certifications. Ensure compatibility with existing serial control protocols.

Part Context

This part belongs to the A3958 family of integrated motor drivers. It shares core architectural similarities with other variants in the series but differs in packaging and specific electrical characteristics. The SB suffix typically denotes a specific package type within the manufacturer's lineup.

Replacement Considerations

The A3959SLBTR-T is listed as a similar replacement option.