AP74502HQTA8-7

Overview

The AP74502HQTA8-7 is an automotive-grade ideal diode controller from Diodes Incorporated, designed for robust reverse connection and voltage transient protection. It supports input voltages from 3.2V to 80V with a 3.9V startup threshold. The device drives external N-channel MOSFETs, including back-to-back configurations, and features a high peak gate pull current of 11mA for rapid conduction within 1µs. It includes load disconnect capabilities for overvoltage and undervoltage conditions, low quiescent current of 62µA, and operates reliably in severe cold-start scenarios.

Feature Summary

• Provides reliable reverse polarity and voltage transient protection for 12V, 24V, and 48V battery systems
• Features high-speed gate drive with 11mA peak pull current for fast MOSFET turn-on
• Supports external back-to-back N-channel MOSFET configurations for enhanced isolation
• Includes integrated load disconnect functionality for overvoltage and undervoltage protection

Applications

• Advanced driver assistance systems (ADAS)
• Body control modules
• Vehicle information entertainment systems
• External lighting circuits
• USB charging ports

Procurement Notes

Verify the specific suffix TA8-7 against official Diodes Incorporated documentation to confirm package type and reel quantity specifications. Ensure the component meets AEC-Q100 qualification requirements for your target automotive application. Cross-reference the manufacturer part number with authorized distributor listings to confirm authenticity and production status.

Selection Notes

Select this controller when rapid MOSFET turn-on is critical, as it offers significantly higher gate drive current compared to standard variants. It is suitable for applications requiring support for back-to-back MOSFET topologies. Consider its 80V rating for compatibility with 48V vehicle architectures and its ability to function during deep discharge cold-start events.

Part Context

This component belongs to the AP74502Q family of ideal diode controllers manufactured by Diodes Incorporated. It is produced in facilities certified under IATF16949 standards. The device is part of a series designed to replace traditional diodes in power distribution networks, offering lower voltage drop and improved efficiency for automotive power management systems.

Replacement Considerations

AP74502QTA8-7 is a confirmed substitute within the same product family, differing primarily in gate drive characteristics.