ncp1423 ON Semiconductor, ncp1423 Datasheet - Page 4

• Manufacturer Part Number: ncp1423
• Description: 400 Ma Sync-rect Pfm Stepup Dcdc Converter With Truecutoff And Ringkiller
• Manufacturer: ON Semiconductor

REF
LBI
EN
FB
2
1
3
9
0.5 V
0.5 V
Reference
Enable
Chip
Voltage
1.2 V
+
−
PFM
+
−
ZLC
CONTROL LOGIC
_ZCUR
_MSON
_CEN
_PFM
_V
REFOK
Figure 2. Detailed Block Diagram
_MAINSWOFD
_MAINSW2ON
−
+
_SYNSW2ON
_SYNSWOFD
_ILIM
20 mV
_TSDON
http://onsemi.com
+
NCP1423
4
−
+
TRUE CUTOFF
CONTROL
GND
V
DD
+
GND
GND
V
DD
R
M1
SENSE
SENSEFET™
GND
M2
M3
GND
V
DD
LBO
BAT
LX
OUT
5
ADEN
10
6
7
4
8
GND
V
BAT
V
OUT