PRODUCT DATASHEET
AAT2550178
SystemPowerTM
Total Power Solution for Portable Applications
VIN
GND
GND
C6
120μF
(opt)
EnVoB
3
2
GND
C4
10μF
C5
10μF
1
R9
59k
R7
59k
EnVoA
1
2
3
C11
100pF
(opt)
R8
187k
LXB
24
23
22
21
20
19
C10
100pF
(opt.)
R10
118k
L1 6.8μH
VoB
CT
1
2
3
4
5
6
LXA
18
17
16
15
14
13
ENA
LXA
LXB
VoA
L2 4.7μH
C9
PGND
CT
4.7μF
C8
U1
4.7μF
PGND
DATA
N/C
AAT2550
C12
0.1μF
Data
STAT1
STAT2
TS
SW1
R1
1.5k
Data Strobe
C14
(open)
ADPSET
R2
1.5k
R6
R4
10k
8.06k
D1
STAT1
7
8
9
10
11
12
D2
STAT2
Green
Red
R3 1k
ADP
GND
1
2
C3
10μF
C13
10μF
Adapter
1
2
3
1
2
3
BAT
GND
TS
Charger Enable
Battery
VoA, VoB (V)
R8, R10 (Ω)
L1, L2
1.0
1.2
1.5
1.8
2.5
3.0
3.3
9.2k
2.2μH (CDRH2D14; DCR 75mΩ; 1200mA @ 20°C)
2.2μH (CDRH2D14; DCR 75mΩ; 1200mA @ 20°C)
4.7μH (CDRH2D14; DCR 135mΩ; 1000mA @ 20°C)
4.7μH (CDRH2D14; DCR 135mΩ; 1000mA @ 20°C)
6.8μH (CDRH2D14; DCR 170mΩ; 850mA @ 20°C)
6.8μH (CDRH2D14; DCR 170mΩ; 850mA @ 20°C)
6.8μH (CDRH2D14; DCR 170mΩ; 850mA @ 20°C)
59k
88.7k
118k
187k
237k
267k
VoA
VoB
Figure 4: AAT2550 Evaluation Board Schematic.
w w w . a n a l o g i c t e c h . c o m
2550.2008.02.1.3
27
ANALOGICTECH [ ADVANCED ANALOGIC TECHNOLOGIES ]
