NCP348, NCP348AE
Positive Overvoltage
Protection Controller with
Internal Low RON NMOS FET and Status FLAG
The NCP348 i...
NCP348, NCP348AE
Positive Over
voltage
Protection Controller with
Internal Low RON NMOS FET and Status FLAG
The NCP348 is able to disconnect the systems from its output pin in case wrong input operating conditions are detected. The system is positive over
voltage protected up to +28 V.
Due to this device using internal NMOS, no external device is necessary, reducing the system cost and the PCB area of the application board.
The NCP348 is able to instantaneously disconnect the output from the input, due to integrated Low RON Power NMOS (65 mW), if the input
voltage exceeds the over
voltage threshold (OVLO) or under
voltage threshold (UVLO).
At powerup (EN pin = low level), the Vout turns on 50 ms after the Vin exceeds the under
voltage threshold.
The NCP348 provides a negative going flag (FLAG) output, which alerts the system that a fault has occurred.
In addition, the device has ESD−protected input (15 kV Air) when bypassed with a 1.0 mF or larger capacitor.
Features
Over
voltage Protection up to 28 V On−Chip Low RDS(on) NMOS Transistor: 65 mW Internal Charge Pump Over
voltage Lockout (OVLO) Under
voltage Lockout (UVLO) Internal 50 ms Startup Delay Alert FLAG Output Shutdown EN Input Compliance to IEC61000−4−2 (Level 4)
8.0 kV (Contact) 15 kV (Air)
ESD Ratings: Machine Model = B
Human Body Model = 3
10 Lead WDFN 2.5x2 mm Package This is a Pb−Free Device
Applications
Cell Phones Camera Phones Digital Still Cameras Personal Digital Applications MP3 Pl...