NCP1417 Datasheet, PDF (4/16 Pages) ON Semiconductor – 200 mA DC-DC Step-up Converter with Dual Low Battery Protection

NCP1417
VBAT
1
FB
4
REF
2
LBI/SHDN
CHIP
ENABLE
+
PFM
–
VOLTAGE
REFERENCE
+
ZLC
–
_ZCUR
20 mV
+
7
LX
M2 ^VDD 8
VOUT
OUT
_PWGONCE
_CEN
_PFM
_VREFOK
_MAINSW2ON
VDD
SenseFET
M1
GND
CONTROL
LOGIC _MAINSWOFD
VDD
_SYNSW2ON
_SYNSWOFD
GND
6
GND
_ILIM
VREF
+ ^CP1
–
30 mV
0.8 x VREF
–
CP2
+
30 mV
+
ILIM
–
+
GND
GND
3
LBO1
5
LBO2
GND
Figure 2. Simplified Functional Diagram
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4