General Description
The MAX4838–MAX4841 are overvoltage protection ICs that protect low-voltage systems against voltages of up to 28V. If the input voltage exceeds the overvoltage trip level, the MAX4838–MAX4841 turn off the low-cost external N-channel FET(s) to prevent damage to the protected components. An internal charge pump eliminates the need for external capacitors and drives the FET gate for a simple, robust solution.

Features
♦ Overvoltage Protection Up to 28V
♦ Preset 7.4V or 5.8V Overvoltage Trip Level
♦ Drive Low-Cost NMOS FET
♦ Internal 50ms Startup Delay
♦ Internal Charge Pump
♦ Undervoltage Lockout
♦ 15kV ESD-Protected Input
♦ Voltage Fault FLAG Indicator
♦ 6-Pin SC70 Package

Applications
Cell Phones
Digital Still Cameras
PDAs and Palmtop Devices
MP3 Players