Rainbow Electronics MAX1567 - Manual (Page 17)

MAX1566/MAX1567
Six-Channel, High-Efficiency, Digital
Camera Power Supplies
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V M
+3.3V
500mA
V SD
+1.8V
250mA
V SU
+5V
350mA
V SU
TO V SU
TO
V BATT
DL1
FB1
DL2
FB2
FB3L
PVM
LXM
FBM
PVSD
LXSD
FBSD
REF
OSC
ONSD
ON1
ON3 (LED)
ON2
CCSU
CCSD
CCM
CC3
CC1
CC2
PGSD
CURRENT-
MODE
STEP-
DOWN
PWM
CURRENT-
MODE UP
OR DOWN
PWM
PVSU
LXSU
FBSU
CURRENT-
MODE
STEP-UP
PWM
PV
PGSU
PGM
OUTSU
SUSD
FB3H
DL3
OUTSU
SCF
AUX1
PWM
AUX2
INVERTING
PWM
AUX3
PWM
OK
PWR ON
OR FAULT
INDL2
GND
ONSU
N1
L5
3.3 µH
L6
10 µH
L1
1.4
µH
D1
D2–D5
LEDS
-7.5V
40mA
TO REF
V BATT
15V
20mA
TO V SU
TO
V
M
2 AA
1.5V TO
3.4V
C15
10
µF
C16
10 µF
C1
1 µF
R2
90.9k
Ω
R1
1M
Ω
R3
10 Ω
C2
0.1 µF
R4
47k Ω
C3
100pF
C14
47
µF R19
40.2k Ω
R20
90.9k Ω
C13
10
µF
C21
47
µF
C11
10
µF
R17
150k
Ω
R18
90.9k Ω
L4
4.7 µH
C10
47 µF
R15
274k
Ω
R16
90.9k
Ω
D8
P1
L3
22 µH
D7
C17
1
µF
R14
90.9k Ω
R13
549k Ω
R11
1M
Ω
R12
90.9k
Ω
C18
1
µF
D6
L2
1.2
µH
N2
R5
R6
R7
R8
R9
R10
ONM
MAX1567
TO
V BATT
AUX1OK
SDOK
C12
10 µF C4
C5
C6
C7
C8
C9
Figure 2. Typical 2-Cell AA-Powered System (3.3V is boosted from the battery and 1.8V is stepped down from VM (3.3V).)