Diodes Incorporated AP74700AQ Automotive Ideal Diode Controller
Diodes Inc. AP74700AQ Automotive Ideal Diode Controller works with an external N-channel MOSFET to provide a low-loss rectification solution with a typical forward voltage drop of 20mV. Supporting a wide 3.2V to 65V input range, the AP74700AQ is well-suited for 12V, 24V, and 48V automotive battery systems, including applications that must operate during severe cold-crank conditions. The device also protects loads from reverse voltages as low as -65V, simplifying automotive power-path protection designs.
Featuring an integrated charge pump and high-speed gate driver, the AP74700AQ regulates MOSFET operation while rapidly blocking reverse currents of less than 0.75µs. This fast response helps maintain output hold-up during ISO 7637 pulse testing, power failures, and input micro-short events. With a 70V rating, an ultra-low shutdown current of approximately 0.7µA, and a compact package, the Diodes Inc. AP74700AQ offers an efficient and robust solution for automotive power protection and reverse-current blocking applications.
Features
- 3.2V to 65V input voltage range (3.9V startup)
- -65V reverse battery voltage
- Charge pump for external N-channel power MOSFET
- 20mV anode-to-cathode forward voltage drop control
- Low 0.7µA shutdown current when disabled
- Low 80µA quiescent current when enabled
- Fast <0.75µs reverse current block response time
- Active high enable operation
- 6-Pin SOT-26 package
- ESD protection
- 2kV Human Body Model (HBM)
- 1.5kV Charged-Device Model (CDM)
- AEC-Q100 qualification with Device Temperature Grade 1 (-40°C to +125°C ambient operating temperature range)
- Compliant with automotive transient requirements with the appropriate TVS
- ISO 7637-2 transient pulses
- ISO 16750-2 load dump suppression
- Totally lead-free and fully RoHS compliant
- Halogen-/antimony-free, Green device
- Suitable for automotive applications requiring specific change control; this part is AEC-Q100 qualified, PPAP capable, and manufactured in IATF16949 certified facilities
Applications
- Automotive infotainment systems - clusters
- Automotive Advanced Driver Assistance Systems (ADAS) systems - cameras
- Automotive lighting systems
- Automotive power trains
Typical Applications Circuit
Functional Block Diagram
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