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NCP348 Datasheet(PDF) 2 Page - ON Semiconductor

Part No. NCP348
Description  Positive Overvoltage Protection Controller with Internal Low R_ON NMOS FET and Status FLAG
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Maker  ONSEMI [ON Semiconductor]
Homepage  http://www.onsemi.com
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NCP348
http://onsemi.com
2
Figure 1. Typical Application Circuit
BAT
10
VSNS
9
V2P8
7
EN
6
1
ISEL
8
4
GND
5
3
2
NCP1835B
IN
1
OUT
6
2
10
3
IN
4
IN
5
OUT
7
NC
8
NC
9
NCP348
0
D3
7011X/SM
4.7
mF
15 pF
100 nF
1
mF
270 K
1 M
V2P8
ENABLE / Microprocessor
Wall Adapter − AC/DC
Lithium BATTERY
0
VBat
CFLG
FAULT
VCC
VBat
VBat
VBat
ENABLE /
Microprocessor
EN
FLAG
Figure 2. Functional Block Diagram
INPUT
OUTPUT
VREF
VREF
DISABLE
OVLO
UVLO
UVLO
OVLO
VREG
VREG
ESD
Protection
Core
Negative
Protection
Power
ON
ESD
Protection
Gate
Driver
60 mA
FLAG
10 V
EN
EN
Block
ESD
Protection
200 kHz
Delay
Generator
Oscillator
LDO
VREF
Charge
Pump
Output Impedance = 200 k




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