NCP1422 ON Semiconductor, NCP1422 Datasheet - Page 2

• Manufacturer Part Number: NCP1422
• Description: Sync-Rect PFM Step-Up DC-DC Converter
• Manufacturer: ON Semiconductor

LBI/EN
REF
FB
1
5
2
0.5 V
Enable
Reference
Chip
Voltage
1.20 V
+
−
PFM
+
−
ZLC
CONTROL LOGIC
_ZCUR
_MSON
_CEN
_PFM
_V
REFOK
Figure 1. Detailed Block Diagram
_MAINSWOFD
_MAINSW2ON
−
+
_SYNSW2ON
_SYNSWOFD
_ILIM
20 mV
_TSDON
http://onsemi.com
+
NCP1422
2
−
+
TRUE CUTOFF
CONTROL
GND
V
DD
+
GND
GND
V
DD
R
M1
SENSE
SENSEFETt
GND
M2
M3
V
DD
LBO
BAT
LX
OUT
10
3
6
8
7
GND
V
BAT
V
OUT