Data Sheet
ADP2323
R BOT1
10k?
R TOP1
15k?
C C1
820pF
R C1
68k?
C SS1
22nF
V IN
9V
C IN1
10μF, 25V
C INT
1μF
INTVCC
SCFG
SW1
C BST1
0.1μF
L1
V OUT1
1.5V, 3A
TRK2
2.2μH
C DRV
TRK1
VDRV
ADP2323
DL1
M1
FDS8880
C OUT1
47μF
C OUT2
47μF
C OUT3
47μF
1μF
GND
MODE
PGND
PGOOD2
PGOOD1
DL2
M2
FDS8880
C OUT4
47μF
C OUT5
47μF
R OSC
100k?
SYNC
RT
SW2
C BST2
0.1μF
L2
3.3μH
V OUT2
2.5V, 3A
R BOT2
15k?
R TOP2
47.5k?
R C2
75k?
C C2
820pF
C SS2
22nF
C IN2
10μF, 25V
V IN
9V
Figure 55. Enable PFM Mode with MODE Pin Pulled to GND, V IN1 = V IN2 = 9 V, V OUT1 = 1.5 V, I OUT1 = 3 A, V OUT2 = 2.5 V, I OUT2 = 3 A, f SW = 600 kHz
R EN_BOT R EN_TOP
68k? 330k?
V IN
12V
R BOT1
2.21k?
R TOP1
10k?
C C1
1500pF
R C1
100k?
C SS1
22nF
C IN1
10μF, 25V
SYNC
PGOOD2
C BST1
0.1μF
V OUT1
3.3V, 3A
C INT
1μF
R PGOOD1
100k?
PGOOD1
INTVCC
MODE
SCFG
ADP2323
SW1
DL1
L1
8.2μH
M1
FDS8880
C OUT1
100μF
C OUT2
100μF
TRK2
TRK1
PGND
C DRV
1μF
VDRV
GND
DL2
M2
FDS8880
C OUT3
100μF
C OUT4
100μF
R OSC
200k?
RT
SW2
C BST2
0.1μF
L2
5.6μH
V OUT2
1.8V, 3A
R BOT2
10k?
R TOP2
20k?
R C2
51k?
C C2
1500pF
C SS2
22nF
C IN2
10μF, 25V
V IN
12V
Figure 56. Programmable V IN_RISING = 8.7 V, V IN_FALLING = 6.7 V, 3.3 V Start Up Before 1.8 V,
V IN1 = V IN2 = 12 V, V OUT1 = 3.3 V, I OUT1 = 3 A, V OUT2 = 1.8 V, I OUT2 = 3 A, f SW = 300 kHz
Rev. A | Page 29 of 32
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