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NCP348
Positive Overvoltage Protection Controller with Internal Low RON NMOS FET and Status FLAG
ON Semiconductor
NCP348 Datasheet PDF : 13 Pages
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NCP348, NCP348AE
V
Bat
V
Bat
Wall Adapter
−
AC/DC
NCP348
1
m
F
1
4
5
IN
IN
IN
OUT
OUT
NC
6
7
8
10
EN
ENABLE /
Microprocessor
9
NC
3
V
Bat
FLAG
2
1M
D3
7011X/SM
NCP1835B
3
2
CFLG
EN
FAULT V2P8
VSNS
6
7
9
1
V
CC
BAT
10
4.7
m
F
ISEL GND
84 5
270 K
15 pF
0
Figure 1. Typical Application Circuit
ENABLE / Microprocessor
V2P8
V
Bat
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
V
REG
V
REG
V
REF
V
REF
UVLO
OVLO
V
REF
UVLO
OVLO
DISABLE
EN
Block
ESD
Protection
10 V
EN
ESD
Protection
Figure 2. Functional Block Diagram
http://onsemi.com
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