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NCP391

Description
Positive Overvoltage Protection Controller with Internal Low RON NMOS FET
File Size260KB,14 Pages
ManufacturerON Semiconductor
Websitehttp://www.onsemi.cn
Download Datasheet View All

NCP391 Overview

Positive Overvoltage Protection Controller with Internal Low RON NMOS FET

NCP391
Positive Overvoltage
Protection Controller with
Internal Low R
ON
NMOS FET
The NCP391 is able to disconnect the systems from its output pin
when wrong input operating conditions are detected. The system is
positive overvoltage protected up to +28 V.
This device uses an internal NMOS and therefore, no external
device is necessary, reducing the system cost and the PCB area of the
application board.
The NCP391 is able to instantaneously disconnect the output from
the input, due to integrated Low R
ON
Power NMOS, if the input
voltage exceeds the overvoltage threshold (OVLO) or falls below the
undervoltage threshold (UVLO).
At powerup (EN pin = low level), the V
out
turns on t
on
time after
the V
in
exceeds the undervoltage threshold.
The NCP391 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
http://onsemi.com
MARKING
DIAGRAM
WLCSP6
FCAL SUFFIX
CASE 499BP
391LG
AYWW
WLCSP6
FCCAD SUFFIX
CASE 567JW
XXXX
A
Y
WW
G
391DG
AYWW
Overvoltage Protection up to 28 V
On−Chip Low R
DS(on)
NMOS Transistor
Internal Charge Pump
Overvoltage Lockout (OVLO)
Undervoltage Lockout (UVLO)
Soft−Start
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 = 2
WLCSP6 1.31x1.04 mm Package
This is a Pb−Free Device
Applications
= Specific Device Code
= Assembly Location
= Year
= Work Week
= Pb−Free Package
PIN CONNECTIONS
IN
1
IN
2
OUT
3
EN
6
GND
5
FLAG
4
or
IN
A1
IN
A2
OUT
A3
EN
B1
GND
B2
FLAG
B3
(Top View)
(Top View)
ORDERING INFORMATION
See detailed ordering, marking and shipping information in the
package dimensions section on page 12 of this data sheet.
Cell Phones
Camera Phones
Digital Still Cameras
Personal Digital Applications
MP3 Players
QFN−16
©
Semiconductor Components Industries, LLC, 2014
1
May, 2014 − Rev. 2
Publication Order Number:
NCP391/D
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