Datasheet

MCP1640 Single Quadruple-A Battery Boost Converter Reference Design
DS51922B-page 18  2010-2011 Microchip Technology Inc.
A.2 BOARD – SCHEMATIC
PIC12F617-MSOP8
MCP1640
Energizer AAAA Holder
BATT1
ICD2 INTERFACE
dnp
J3
OUT GND
TP4 TP3
R8 100k
Q2
2
3
R2
1M3
R3
240k
4u7L1
U1
R1
1M
Q1C1
1
1
1
3
2
1
10uF
TP1
TP5
1
1
1
2
TP2
1
GND
2
1
1 1
V
IN
1
6
5 4
1
2
3
FB
V
OUT
VINSW
GND
EN
1
1
1
2 3 4 5
U2
8 7
6
5
1 2
3
4
R7
1k
D1
R5
220
K
1
3
S1
2
4
C3
C4
R6
330
1u 1u
R9
dnp
R4
510k
V
DD
VSS
GP0 GP1 GP2
GP5/OSC1
GP4/OSC2
GP3/MCLR
VPP
1
2
3
4 5
V
OUT
PGD
PGC
PGD
C2
10uF
V
OUT
PGC
/EN
PGD
VOUT
VBATT
VPP
VOUT
/EN
VBATT