Diodes Incorporated

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Reverse Voltage Protected Ideal diode controller

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The DIODES™ AP74700Q is an automotive-compliant ideal diode MOSFET controller, which when used with an appropriate external N-channel power MOSFET provides a low-loss 20mV forward voltage drop rectifier in unidirectional power paths as well as reverse voltage.

AP74700Q supports wide input operation range from 3.2V to 65V, allowing control of many popular DC rail voltage such as 12V, 24V or higher automotive battery systems. The 3.2V input voltage support fits for severe cold crank requirements in automotive systems. The AP74700Q can withstand and protect the loads from reverse voltages down to -65V.

AP74700Q, with its built-in charge pump, controls the GATE of MOSFET to regulate the MOSFET’s forward voltage drop to around 20mV. Its internal gate driver quickly turns off the MOSFET during a reverse current event and ensures there is no DC reverse current flow. Fast reverse current blocking response of < 0.75µs makes it suitable for systems with output voltage holdup requirements during ISO 7637 pulse testing, as well as power fail and input micro-short conditions.

The high 65V voltage rating of AP74700Q simplifies the system design for automotive ISO 7637 protection. With the enable pin low, the controller is off and draws about typical 0.7µA of current.

The AP74700Q is available in SOT26 package.


  • Input Voltage Ranges from 3.2V to 65V (3.9V Start-up)
  • -65V Reverse Battery Voltage
  • Charge Pump for External N-Channel Power MOSFET
  • 20mV ANODE to CATHODE Forward Voltage Drop Control
  • Low Shutdown Current of 0.7µA when Disabled
  • Low Quiescent Current of 80µA when Enabled
  • Fast Reverse Current Block Response Time of < 75µs
  • Active High Enable Operation
  • ESD Protection 2kV of HBM and 1.5kV of CDM
  • AEC-Q100 Qualification with Device Temperature Grade 1 (-40°C to +125°C Ambient Operating Temperature Range)
  • Compliant with Automotive Transient Requirements with Appropriate TVS
    • ISO 7637-2 Transient Pulses
    • ISO 16750-2 Load Dump Suppression
  • 6-Pin SOT26 Package
  • Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
  • Halogen and Antimony Free. “Green” Device (Note 3)
  • The AP74700Q is suitable for automotive applications requiring specific change control; this part is AEC-Q100 qualified, PPAP capable, and manufactured in IATF16949 certified facilities.



  • Automotive infotainment systems - clusters
  • Automotive ADAS systems - cameras
  • Automotive lighting systems
  • Automotive power trains

Product Specifications

Product Parameters

Type IDC
AEC Qualified Yes
Compliance (Only Automotive supports PPAP) Automotive
Channels 1
Enable Logic Active High
Minimum Operating Voltage (V) 4
Maximum Operating Voltage (V) 60
Quiescent Current Typ (µA) 80
RDS(ON) (VIN = 5V) Typ (mΩ) External
Reverse Current Block Yes
Minimum Power Supply Voltage (V) 4
Maximum Power Supply Voltage (V) 60
Operating Ambient Temperature Range (°C) -40 to 125
Overtemperature Protection Yes
UL Certificate No

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