A3931KJP-T

Overview

The A3931KJP-T is a three-phase brushless DC motor controller and driver manufactured by Allegro MicroSystems. It operates within a supply voltage range of 5.5 V to 50 V and supports an output current of 15 mA with a working supply current of 11 mA. The device features a load voltage rating up to 50 V and provides a 5 V output voltage. Designed for automotive applications, it functions across a temperature range of -40°C to +150°C. The component utilizes power MOSFET technology and is housed in a 48-LQFP package with exposed pad.

Feature Summary

• Integrates control logic and power stages for three-phase BLDC motor commutation and direction management
• Utilizes parallel power MOSFET architecture for robust drive capability
• Engineered for automotive-grade reliability with extended thermal tolerance

Applications

• Automotive brushless DC motor control systems
• Industrial motion control applications requiring high-temperature operation
• General-purpose three-phase motor driving circuits

Procurement Notes

Verify the specific suffix 'T' against the manufacturer's official documentation to confirm the tape-and-reel packaging configuration. Ensure that the selected variant aligns with the required automotive qualification standards and operating temperature specifications defined in the datasheet. Cross-reference the 48-LQFP pinout to guarantee compatibility with the target printed circuit board layout before finalizing procurement orders.

Selection Notes

Select this component when designing systems that require integrated commutation control for three-phase BLDC motors within a 5.5 V to 50 V supply range. The wide operating temperature range makes it suitable for harsh environments. Consider the 48-LQFP package dimensions and exposed pad thermal requirements during PCB layout planning to ensure adequate heat dissipation and mechanical stability for automotive or industrial deployments.

Part Context

This part belongs to the A3930/A3931 series of motor controllers from Allegro MicroSystems. It serves as a specialized solution for managing three-phase brushless DC motors, combining digital control functions with analog power drivers. The series is designed to simplify system design by integrating necessary protection features and control logic into a single compact semiconductor package.

Replacement Considerations

The A3931KJPTR-T is a direct substitute offering identical electrical characteristics but supplied in tape-and-reel format instead of cut tape.