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NCP1423 Datasheet(PDF) 4 Page - ON Semiconductor

Part No. NCP1423
Description  400 mA Sync−Rect PFM Step−Up DC−DC Converter with True−Cutoff and Ring−Killer
Download  13 Pages
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Maker  ONSEMI [ON Semiconductor]
Homepage  http://www.onsemi.com
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NCP1423 Datasheet(HTML) 4 Page - ON Semiconductor

 
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NCP1423
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Figure 2. Detailed Block Diagram
_ZCUR
_MSON
_CEN
_PFM
_TSDON
_MAINSW2ON
_MAINSWOFD
_SYNSW2ON
_SYNSWOFD
_VREFOK
CONTROL LOGIC
20 mV
+
PFM
Voltage
Reference
LBI
9
+
FB
3
+
ZLC
+
TRUE CUTOFF
CONTROL
VDD
GND
VDD
GND
+
+
GND
RSENSE
GND
SENSEFET
M1
VDD
M3
BAT
6
LX
7
OUT
5
VBAT
4
GND
VOUT
LBO
10
_ILIM
0.5 V
0.5 V
M2
EN
1
ADEN
8
GND
REF
2
1.2 V


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