Description

The MAX4923–MAX4926 overvoltage protection(OVP) controllers protect low-voltage systems againsthigh-voltage faults of up to +28V with an appropriateexternal pFET. When the input voltage exceeds the overvoltagelockout (OVLO) threshold, or falls below theundervoltage lockout (UVLO) threshold, these devicesturn off the pFET to prevent damage to protected componentsand issue a flag to notify the processor of a faultcondition.The typical overvoltage trip level is set to 7.18V(MAX4923), 6.16V (MAX4924), 5.65V (MAX4925), and4.46V (MAX4926). The undervoltage trip level is set to2.44V (typ) for all devices.The input (IN) is ESD protected to ±15kV HBM whenbypassed to ground with a 1µF ceramic capacitor. Alldevices are offered in a small, 6-pin (1.5mm x 1.0mm)µDFN package and are specified over the extended-40°C to +85°C temperature range.ApplicationsCell PhonesDigital Still CamerasMP3 PlayersPDAs and Palmtop Devices