A4916KJPTR-T-1

Overview

The A4916KJPTR-T-1 is an automotive-grade, three-phase MOSFET gate driver designed for Brushless DC (BLDC) motor applications. It integrates a high-voltage supply interface and three half-bridge outputs capable of driving external N-channel power MOSFETs. The device supports PWM frequencies up to 50 kHz and includes features such as under-voltage lockout, thermal shutdown, and over-current protection. It operates within a supply voltage range of 8 V to 35 V and functions reliably across an extended temperature range from -40 °C to +150 °C. Packaged in a 48-pin LQFP with exposed pad for enhanced thermal performance.

Feature Summary

• Integrated ASIL-B compliant architecture for functional safety in automotive environments
• Three half-bridge outputs with dedicated current sense amplifiers for precise motor control
• Built-in protection mechanisms including thermal shutdown and over-current sensing

Applications

• Automotive BLDC fan motors
• Electric power steering systems
• Water pump controllers

Procurement Notes

Verify the specific suffix '-1' against the manufacturer's official documentation to confirm pin compatibility and feature set variations. Ensure the ordering part number matches the exact package type and temperature grade required for your design. Cross-reference the datasheet revision date to ensure all latest electrical characteristics and mechanical drawings are considered during integration.

Selection Notes

Select this component when designing automotive BLDC motor drives requiring integrated gate driving and current sensing capabilities. It is suitable for applications needing robust fault protection and compliance with automotive functional safety standards. Consider the thermal requirements of the LQFP-48 package and the need for external MOSFETs compatible with the driver's output voltage levels.

Part Context

This part belongs to the Allegro A491x series of automotive BLDC gate drivers. It shares architectural similarities with other members like the A4911 and A4916 but may differ in specific integration levels such as the inclusion or exclusion of internal sense amplifiers. The series is targeted at high-reliability automotive motion control applications.

Replacement Considerations

Direct substitutes include the A4911KJPTR-T and A4916KJPTR-T. Verify if the target replacement includes the necessary sense amplifier configuration and ASIL rating. Check for any differences in pinout or thermal pad connectivity before replacing.