AAT2552
Total Power Solution for Portable Applications
JP1
EN_BAT
2
1
3 2 1
Power Selection
JP2
BAT
ADP
D1
RED
LED
C6
10μF
(at bottom layer)
C1
10μF
1
2
R6
EN_LDO
U1
JP3
1.5K
Sync/Mode
15
16
1
10
11
7
ADP
INA
1
2
STAT
INB
ENA
ENB
EN_BAT
MODE
6
5
EN_BUCK
VoB
L1
14
2
12
4
BAT
LX
C4
100pF
(Optional)
ISET
FBB
VoA
C2
10μF
R2
3
9
8
AGND
PGND
OUTA
FBA
R1
8.06K
13
R4
C3
4.7μF
R3
59k
C5
4.7μF
R5
59k
VOUTB (V) R2 (Ω)
L1
VOUTA (V)
R4 (Ω)
0.6
13
R2 short, R3 open
1.24
1.5
1.8
2.0
2.5
2.8
3.0
R4 short, R5 open
12.4K
9.2K
59K
1.5μH (CDRH2D09/HP; DCR 88mΩ; 730mA @ 20°C)
2.2μH (CDRH2D09/HP; DCR 115mΩ; 600mA @ 20°C)
3.0μH (CDRH2D09/HP; DCR 150mΩ; 470mA @ 20°C)
3.9μH (CDRH2D09/HP; DCR 180mΩ; 450mA @ 20°C)
4.7μH (CDRH2D09/HP; DCR 230mΩ; 410mA @ 20°C)
5.6μH (CDRH2D09/HP; DCR 260mΩ; 370mA @ 20°C)
1.2
1.8
2.5
3.0
3.3
26.7K
118K
187K
237K
267K
36.5K
60.4K
75.0K
97.6K
Figure 5: AAT2552 Evaluation Board Schematic.
Figure 6: AAT2552 Evaluation Board
Top Side Layout.
Figure 7: AAT2552 Evaluation Board
Bottom Side Layout.
26
2552.2007.04.1.0
ANALOGICTECH [ ADVANCED ANALOGIC TECHNOLOGIES ]
