NCP349 - ON Semiconductor

The pictures are for reference only, and the specific specifications can be found in the product manual.

Part No

NCP349
Manufacturer

ON Semiconductor
ChipWorker Part#

CW1242959930
Description

Positive Overvoltage Protection Controller With Internal Low Ron Nmos Fet
Documentation

Datasheet

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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 Power NMOS (65 mΩ, if the input voltage exceeds the overvoltage threshold (OVLO) or undervoltage threshold(UVLO).At powerup (EN(BAR) pin = low level), the V 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
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Overvoltage Protection up to 28 V
On-Chip Low RDS(on) NMOS Transistor: 65 m
Overvoltage Lockout (OVLO)
Undervoltage Lockout (UVLO)
Internal 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

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