NCP349: 28 V Overvoltage Protection IC

Product Description ��

The NCP349 is able to disconnect the systems from its output pin in case wrong input operating conditions are detected. The system is positive overvoltage protected up to +28 V.
Due to this device using internal NMOS, no external device is necesary, reducing the system cost and the PCB area of the application board.
The NCP349 is able to instantaneously disconnect the output from the input, due to integrated Low R_on Power NMOS (65 m��, if the input voltage exceeds the overvoltage threshold (OVLO) or undervoltage threshold, of 2.95 V (UVLO).
At powerup (EN(BAR) pin = low level), the V_out turns on 10 ms after the V_in exceeds the undervoltage threshold.
The NCP349 provides a negative going flag(FLAG(BAR)) 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 µF or larger capacitor.

Features

Overvoltage Protection up to 28 V

On-Chip Low R_DS(on) NMOS Transistor: 80 m

Overvoltage Lockout (OVLO)

Undervoltage Lockout (UVLO)

Internal 10 ms Soft start

Alert FLAG(BAR) Output

Shutdown EN(BAR) Input

Compliance to IEC61000-4-2 (Level 4), 8.0 kV (Contact), and 15 kV (Air)

ESD Ratings: Machine Model = B, Human Body Model = 3

This is a Pb-Free Device

Package DFN 1.6 x 2.0 mm

Applications ��

Cell Phones, Camera Phones, Digital Still Cameras, PDA, and MP3 Players

Diagram ��

PIN CONFIGURATION :

Supplier

FROM: Company Name: Aunytor Electronic (HK) Co.,Ltd
            Contact Person: liao
            Skype: Aunytor
            Email: 2885745253@qq.com