MAX1566-MAX1567 Datasheet, PDF (18/35 Pages) Maxim Integrated Products – Six-Channel, High-Efficiency, Digital Camera Power Supplies

Six-Channel, High-Efficiency, Digital
Camera Power Supplies
V_BATT
C15
2 AA OR Li+
10µF
1.5V TO
4.2V
MAX1567
L1
1.4µH
C1
1µF ^D1
R1
1MΩ
OUTSU
N1
DL3
D2–D5
LEDS
R2
90.9kΩ
FB3H
AUX3
PWM
FB3L
C16
10µF
AUX1
PWM
OUTSU
DL1
N2
FB1
INDL2
DL2
AUX2
INVERTING
PWM
FB2
C2
0.1µF _REF
R3
10Ω
V_{SU R4}
47kΩ
OSC
C3
100pF
ONSU
ONM
CURRENT-
MODE
STEP-UP
PWM
ONSD
AUX1OK
PV
PVSU
D8
LXSU
PGSU
L2
1.2µH _C18
1µF
D6
15V
20mA
R11
1MΩ _R12
90.9kΩ
TO V_SU
P1
L3
22µH
D7
C17
R13
1µF
549kΩ
-7.5V
40mA
TO REF
R14
90.9kΩ
TO
V_BATT
C10
47µF VSU
+5V
100mA
L4
4.7µH
R15
274kΩ
R16
90.9kΩ
R5
R6
C4
R7
C5
R8
C6
R9
C7
R10
C8
C9
ON3 (LED)
ON1
ON2
SUSD
OK
PWR ON
OR FAULT
CCSU
CCSD
CCM
CC3
CC1
CC2
CURRENT-
MODE UP
OR DOWN
PWM
CURRENT-
GND
MODE
STEP-
DOWN
PWM
SDOK
FBSU
SCF
PVM
LXM
PGM
FBM
PVSD
LXSD
FBSD
PGSD
L5
10µH
R17
150kΩ
C11
10µF
V_M
+3.3V
C12 ^200mA
22µF
R18
90.9kΩ
L6
10µH
TO
C13 BATT
10µF
R19
40.2kΩ
C14
22µF
V_SD
+1.8V
200mA
R20
90.9kΩ
Figure 3. Li+ or Multibattery Input (This power supply accepts inputs from 1.5V to 4.2V, so it can operate from either 2 AA cells or 1
Li+ cell. The 3.3V logic supply and the 1.8V core supply are both stepped down from 5V for true boost-buck operation.)
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