Product Overview

Product Overview
NCP348: Positive Overvoltage Protection Circuit with Internal Low Ron NMOS
FET and Status Flag
For complete documentation, see the data sheet
Product Description
The NCP348 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 NCP348 is able to instantaneously disconnect the output from the input, due to integrated Low Ron Power NMOS (80 mΩ, if the
input voltage exceeds the overvoltage threshold (6.4 V) or undervoltage threshold, of 3.25 V (UVLO).
At powerup (EN(BAR) pin = low level), the Vout turns on 50 ms after the Vin exceeds the undervoltage threshold.
The NCP348 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
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Overvoltage Protection up to 28 V
On-Chip Low RDS(on) NMOS Transistor: 80 mΩ
Internal Charge Pump
Overvoltage Lockout (OVLO)
Undervoltage Lockout (UVLO)
Internal 50 ms Startup Delay
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
For more features, see the data sheet
Applications
• Cell Phones, Camera Phones, Digital Still Cameras, Personal Digital Applicaitons, and MP3 Players
Part Electrical Specifications
Product
Compliance
Status
VCC Min
(V)
VCC Max
(V)
P(AV) Max
(W)
VIT+ Typ
(V)
VIT Typ (V) IDDH Max
(µA)
TA Min
(°C)
TA Max
(°C)
Package
Type
NCP348AEMTTBG
Pb-free
Active
1.2
28
0.48
6.02
3.25
250
-40
85
WDFN-10
Active
1.2
28
0.48
6.4
3.25
250
-40
85
WDFN-10
Halide free
NCP348MTTBG
Pb-free
Halide free
For more information please contact your local sales support at www.onsemi.com
Created on: 6/30/2016