Image shown is for reference only. Actual package may vary. Refer to the product data sheet for package details. SO-8 (Standard)
Image shown is for reference only. Actual package may vary. Refer to the product data sheet for package details. SOT26
Image shown is for reference only. Actual package may vary. Refer to the product data sheet for package details. SO-8 (Standard)
+70V, -65V Reverse Voltage Protection Automotive-Compliant Ideal Diode Controller
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The AP74700AQ 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 uni-directional power paths as well as reverse voltage.
The AP74700AQ supports wide input operation range from 3.2V to 65V, allowing control of many popular DC rail voltage such as 12V, 24V and 48V automotive battery systems. The 3.2V input voltage support fits for severe cold crank requirements in automotive systems.
The AP74700AQ can withstand and protect the loads from reverse voltages down to -65V. The AP74700AQ, 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 hold-up requirements during ISO 7637 pulse testing, as well as power fail and input micro-short conditions.
The high 70V voltage rating of AP74700AQ 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 AP74700AQ is available in the SOT26 package, and will be available in the SO-8 (Standard) and SOT28 packages.
| Type | Ideal Diode Controller |
|---|---|
| AEC Qualified | Yes |
| Compliance (Only Automotive Supports PPAP) | Automotive |
| Maximum Continuous Output Current (A) | External NMOS |
| (MAX) Maximum Current Limit Fixed (A) | External NMOS |
| Channels | 1 |
| Enable Logic | Active High |
| Minimum Operating Voltage (V) | 4 |
| Maximum Operating Voltage (V) | 65 |
| 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) | 65 |
| Output Discharge | N/A |
| (TYP) Output Rise Time mS | N/A |
| OCP Output Latch Off | N/A |
| OCP Flag | No |
| Power Good | No |
| Operating Ambient Temperature Range (°C) | -40 to 125 |
| Overtemperature Protection | No |
| UL Certificate | No |
