Datasheet

MCP1640/B/C/D
DS22234A-page 2  2010 Microchip Technology Inc.
V
IN
GND
V
FB
SW
V
IN
0.9V To 1.7V
V
OUT
3.3V @ 100 mA
C
OUT
10 µF
C
IN
4.7 µF
L
1
4.7 µH
V
OUT
+
-
976 K
562 K
ALKALINE
V
IN
P
GND
V
FB
SW
V
IN
3.0V To 4.2V
V
OUT
5.0V @ 300 mA
C
OUT
10 µF
C
IN
4.7 µF
L
1
4.7 µH
V
OUTS
+
-
976 K
309 K
V
OUTP
S
GND
LI-ION
EN
EN
Efficiency vs. I
OUT
for 3.3V
OUT
40.0
60.0
80.0
100.0
0.1 1.0 10.0 100.0 1000.0
Output Current (mA)
Efficiency (%)
V
IN
= 0.8V V
IN
= 1.2V
V
IN
= 2.5V