NiCd /NiMH Ba t t e ry
Fa s t -Ch a rg e Co n t ro lle rs
L1
D03340
M1
IRFR9024
DC IN
220µH
8V TO 15V
D1
R2
5.1k
C6
10µF
50V
C5
10µF
50V
MBRS340T3
3
D2
1
MBRS340T3
Q1
CMPTA06
D4
CCLHM080
(8mA CURRENT-
LIMITING DIODE)
2
2
3
3
1
Q2
2N2907
Q4
CMPTA06
1
2
2/MAX713
14
11
CC
5
15
3
THI DRV
C2
220pF
V+
2 x 1000mA-Hr
NiCd CELLS
MAX713
PGM0
2
BATT +
BATT+
4
C3
10µF
50V
PGM1
PGM2
PGM3
REF
9
12
6
BATT–
BATT-
TLD
10
16
R3
0.25Ω
REF
13
1
R6
68kΩ
VLIMIT
TEMP
GND
7
FASTCHG
R7
22kΩ
C4
0.1µF
8
C1
1µF
10V
R5
470Ω
Figure 19. Simplest Switch-Mode Charger
16 ______________________________________________________________________________________