Diodes Incorporated AP74502Q/AP74502HQ Controllers

Diodes Incorporated AP74502Q/AP74502HQ Controllers are AEC-Q100 qualified, reverse battery polarity, and overvoltage protection controllers operating with two external N-channel MOSFETs. These controllers are designed for input protection in 12V, 24V, and 48V automotive systems. The AP74502Q/AP74502HQ controllers operate at input voltages as low as 3.2V, particularly for severe cold crank requirements in automotive systems, and up to 75V. These controllers operate at -40°C to 150°C junction temperature range and 4V to 75V input voltage range. The AP74502Q/AP74502HQ controllers are halogen-free, lead-free, fully RoHS compliant, and are available in the SOT-28 package. These controllers are well-suited for automotive body control units, automotive infotainment systems, automotive ADAS systems, cameras, industrial automation, and enterprise power supplies. 

The AP74502Q/AP74502HQ Controllers can withstand and protect the loads from negative supply voltages down to -80V. The AP74502Q, with its typical gate drive strength of 60μA, provides smooth start-up with inherent inrush current control. The AP74502HQ, with its 11mA typical peak gate drive strength, is suitable for applications that need faster turn-on, such as load switch applications.

Features

  • 3.2V to 75V (3.9V start-Up) input voltage range
  • -80V reverse battery voltage
  • Charge pump for External N-ch power MOSFETs
  • Drives external back-to-back N-ch MOSFETs
  • Gate driver strength option
  • 60μA peak gate source AP74502Q
  • 11mA peak gate source AP74502HQ
  • Low quiescent current of 62µA when enabled
  • 2kV of HBM and 750V of CDM ESD protection
  • AEC-Q100 qualification compliance with device temperature grade 1 (-40°C to 125°C ambient operating temperature range)
  • 8-Pin SOT28 Package

Applications

  • Body control units
  • Infotainment
  • Advanced Driver Assistance Systems (ADAS)
  • Exterior lighting
  • USB charging

Application Diagram

Application Circuit Diagram - Diodes Incorporated AP74502Q/AP74502HQ Controllers

Block Diagram

Block Diagram - Diodes Incorporated AP74502Q/AP74502HQ Controllers
Yayınlandı: 2025-06-27 | Güncellenmiş: 2025-07-28