NCP372_10 Datasheet, PDF (1/12 Pages) ON Semiconductor – Positive and Negative Overvoltage Protection Controller

NCP372
Positive and Negative
Overvoltage Protection
Controller with Internal
Low R_on NMOS FETs and
Status FLAG
The NCP372 is able to disconnect systems from its output pin
when wrong operating conditions are detected at it’s input. The
system is both positive and negative overvoltage protected up to
±28 V.
This device uses internal NMOS, and therefore, no external device
is necessary, reducing the system cost and the PCB area of the
application board.
The NCP372 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 undervoltage
threshold (UVLO).
At powerup (EN pin = low level), the V_out turns on 30 ms after the
V_in exceeds the undervoltage threshold.
The NCP372 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
• Overvoltage Protection up to 28 V
• Negative Voltage Protection down to −28 V
• Reverse Current Blocking
• On−Chip Low R_DS(on) NMOS Transistor: Typical 130 mW
• 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
• 12 Lead LLGA 3x3 mm Package
• This is a Pb−Free and Halogen−Free Device
Applications
• Cell Phones
• Camera Phones
• Digital Still Cameras
• Personal Digital Assistant
• MP3 Players
• GPS
© Semiconductor Components Industries, LLC, 2010
1
October, 2010 − Rev. 1
http://onsemi.com
MARKING
DIAGRAM
1
12 PIN LLGA
MU SUFFIX
CASE 513AK
NCAI
372
ALYWG
G
A
= Assembly Location
L
= Wafer Lot
Y
= Year
W
= Work Week
G
= Pb−Free Package
(Note: Microdot may be in either location)
PIN CONNECTIONS
IN ¹
12 _OUT
IN ²
11 _OUT
GND ³
RES ⁴
NCP372
10 FLAG
9 _EN
RES ⁵
8 _NC
RES ⁶
(Top View)
7 _GND
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 11 of this data sheet.
Publication Order Number:
NCP372/D