A4940KLPTR-T

Overview

The A4940KLPTR-T is an automotive-grade full-bridge MOSFET pre-driver IC designed for high-power inductive loads like brushed DC motors. It operates within a supply voltage range of 5.5 V to 50 V and supports junction temperatures from -40 °C to +150 °C. The device features independent control of each MOSFET, a charge pump for low-voltage operation, and adjustable dead time for cross-conduction protection. It includes a diagnostics output and a low-current sleep mode.

Feature Summary

• Independent control of each MOSFET in the full bridge configuration
• Integrated charge pump enabling operation at low supply voltages
• Adjustable dead time circuitry to prevent cross-conduction
• Diagnostics output for fault reporting and system monitoring

Applications

• Automotive brushed DC motor drives
• High-power inductive load control systems
• Vehicle accessory motor applications

Procurement Notes

Verify the specific suffix KLPTR-T against the manufacturer's current datasheet to confirm package type and tape-and-reel specifications. Ensure the component meets required automotive qualification standards for your target application environment. Cross-reference the part number with official Allegro MicroSystems documentation to validate availability status and any recent design changes or obsolescence notices before finalizing procurement plans.

Selection Notes

Select this component when designing circuits requiring robust full-bridge driving for external N-channel MOSFETs in automotive environments. The wide operating voltage range and extended temperature capability make it suitable for harsh conditions. Consider the integrated diagnostics and sleep modes if system efficiency and fault detection are critical requirements for the motor control architecture.

Part Context

This device belongs to Allegro MicroSystems' family of full-bridge controllers specifically engineered for automotive markets. It complements existing controller lines by offering dedicated pre-driver functionality with enhanced diagnostic capabilities. The design focuses on reliability and flexibility for managing high-current inductive loads commonly found in vehicle electrical systems.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material.