Two diode controllers, the AP74502Q and AP74502HQ from Diodes, present 80-V reverse battery polarity safety for automotive methods. In addition they supply load disconnect to protect towards overvoltage and undervoltage situations. Appropriate with 12-V, 24-V, and rising 48-V battery methods—together with these in hybrid and electrical autos—the gadgets are well-suited for ADAS, physique management modules, infotainment, and exterior lighting.
The AEC-Q100 certified controllers differ in peak gate supply present. The AP74502Q handles 60 µA (typical), enabling easy startup with inherent inrush present management—helpful in functions the place limiting surge present is essential. By comparability, the AP74502HQ withstands the next 11-mA peak, permitting faster MOSFET turn-on with a 1-µs typical response.
Each controllers help enter voltages as little as 3.2 V for dependable operation throughout chilly crank situations and supply a peak gate turn-off sink present of two.3 A for quick MOSFET switching throughout voltage occasions. With the cost pump enabled, their quiescent present is 62 µA, dropping to 1 µA when disabled, minimizing energy consumption and battery drain.
Housed in SOT28 packages, the AP74502Q and AP74502HQ value $0.27 every in 1000-unit portions.
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