NCP348AE Protection Controller Datasheet

NCP348AE Datasheet, PDF, Equivalent


Part Number

NCP348AE

Description

Positive Overvoltage Protection Controller

Manufacture

ON Semiconductor

Total Page 13 Pages
Datasheet
Download NCP348AE Datasheet


NCP348AE
NCP348, NCP348AE
Positive Overvoltage
Protection Controller with
Internal Low RON NMOS FET
and Status FLAG
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
necessary, 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 (65 mW), if the
input voltage exceeds the overvoltage threshold (OVLO) or
undervoltage threshold (UVLO).
At powerup (EN pin = low level), the Vout turns on 50 ms after the
Vin exceeds the undervoltage threshold.
The NCP348 provides a negative going flag (FLAG) output, which
alerts the system that a fault has occurred.
In addition, the device has ESDprotected input (15 kV Air) when
bypassed with a 1.0 mF or larger capacitor.
Features
Overvoltage Protection up to 28 V
OnChip Low RDS(on) NMOS Transistor: 65 mW
Internal Charge Pump
Overvoltage Lockout (OVLO)
Undervoltage Lockout (UVLO)
Internal 50 ms Startup Delay
Alert FLAG Output
Shutdown EN Input
Compliance to IEC6100042 (Level 4)
8.0 kV (Contact)
15 kV (Air)
ESD Ratings: Machine Model = B
Human Body Model = 3
10 Lead WDFN 2.5x2 mm Package
This is a PbFree Device
Applications
Cell Phones
Camera Phones
Digital Still Cameras
Personal Digital Applications
MP3 Players
http://onsemi.com
MARKING
DIAGRAM
WDFN10
MT SUFFIX
CASE 516AA
BAxM
G
BAI = NCP348
BAJ = NCP348AE
M = Date Code
G = PbFree Package
PIN CONNECTIONS
IN 1
GND 2
FLAG 3
PAD1
GND
10 EN
9 NC
8 NC
IN 4
IN 5
PAD2
IN
7 OUT
6 OUT
(Top View)
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 12 of this data sheet.
© Semiconductor Components Industries, LLC, 2010
May, 2010 Rev. 6
1
Q
Publication Order Number:
NCP348/D

NCP348AE
NCP348, NCP348AE
VBat VBat
Wall Adapter AC/DC
1 mF
1
4
5
NCP348
IN OUT
IN OUT
IN NC
10
EN
ENABLE /
Microprocessor
NC
FLAG
2
6
7
8
9
3
VBat
1M
D3
7011X/SM
NCP1835B
3
2
1
CFLG EN
FAULT V2P8
VSNS
VCC BAT
6
7
9
10
4.7 mF ISEL GND
84
5
270 K
15 pF
0 Figure 1. Typical Application Circuit
ENABLE / Microprocessor
V2P8
VBat
100 nF
Lithium BATTERY
0
INPUT
OUTPUT
ESD
Protection
Core
Negative
Protection
Output Impedance = 200 k
Charge
Pump
60 mA
Gate FLAG
Driver
200 kHz
Delay
Generator
LDO
Oscillator
Power
ON
VREG
VREG
VREF
VREF
UVLO
OVLO
VREF
UVLO
OVLO
DISABLE
EN
Block
ESD
Protection
10 V
EN
ESD
Protection
Figure 2. Functional Block Diagram
http://onsemi.com
2


Features NCP348, NCP348AE Positive Overvoltage P rotection Controller with Internal Low RON NMOS FET and Status FLAG The NCP348 is able to disconnect the systems from its output pin in case wrong input ope rating conditions are detected. The sys tem is positive overvoltage protected u p to +28 V. Due to this device using in ternal NMOS, no external device is nece ssary, reducing the system cost and the PCB area of the application board. The NCP348 is able to instantaneously disc onnect the output from the input, due t o integrated Low RON Power NMOS (65 mW) , if the input voltage exceeds the over voltage threshold (OVLO) or undervoltag e threshold (UVLO). At powerup (EN pin = low level), the Vout turns on 50 ms a fter the Vin exceeds the undervoltage t hreshold. The NCP348 provides a negativ e going flag (FLAG) output, which alert s the system that a fault has occurred. In addition, the device has ESD−prot ected input (15 kV Air) when bypassed w ith a 1.0 mF or larger capacitor. Features • Overvoltage Protecti.
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