The NCP398 is an overvoltage protection device. It protects VCONN against overvoltages in applications where VCONN is directly derived from the VBUS supply. At power up, the integrated power MOSFET is automatically controlled to reduce inrush current. The IC continuously monitors under voltage, overvoltage and thermal events. In case of overvoltage, a very high speed comparator opens the power MOSFET instantaneously. The part is enabled through the EN pin. A high level on this pin allows forcing off the internal switch and drastically decreases the current consumption of the NCP398 core.Over-voltage Protection up to + 28 V On-chip Low Rdson NMOS Transistors: Typical 200 m Over-voltage Lockout (OVLO) Shutdown EN Input Output Discharge Path WLCSP4 Package 0.84 x 0.84 mm, 0.4p UDFN6 Package 2 x 2 mm, 0.65p These Parts are ROHS Devices