PRODUCT DATASHEET
AAT2504178
SystemPowerTM
Adjustable 3-Channel Regulator
Figure 1: AAT2504 Evaluation Board
Figure 2: AAT2504 Evaluation Board
Bottom Side Layout.
Top Side Layout.
SYNC
U1
AAT2504
LX
R10
LX
100k
FB
MODE/SYNC
VIN
LX
5
4
9
FB
VOUT_BUCK
L1
Buckout
8
MODE/SYNC LX
CDRH2D14
VIN
R1
OUTA
13
18
17
15
16
20
1
C1
VIN
OUTA
POK
R2
C2
10μF
100
C3
100pF
3
2
1
R3
.01μF
VLDOA
C4
0.1μF
VLDOA
VLDOB
VP
100k
R4
R5
3
2
1
C8
1μF
VINA
VLDOB 19
VP 10
FBA
FBA
OUTA
C9
1μF
VINB
OUTB
FBB
OUTB
FBB
OUTB
1
2
3
EN
14
EN
R6
59.0k
C5
2.2μF
1
2
3
EN
ENB 3
ENA 2
7
C6
2.2μF
ENB
ENA
PGND
AGND
R7
59.0k
R8
59.0k
1
2
3
ENB
6
GND
GND
C7
10μF
ENA
R12
(open)
GND
GND
POK
POK
VOUT_BUCK (V) R2 (kΩ)
L1 (μH)
VOUT_LDO (V)
R4, R5 (kΩ)
0.9
1.0
1.1
1.2
1.3
1.4
1.5
1.8
1.85
2.0
2.5
2.8
3.0
3.3
0
1.5
1.5
1.5
1.5
1.5
1.5
2.2
2.2
2.2
2.2
3.3
3.3
3.3
3.3
0.8
0.9
1.0
1.1
1.2
1.3
1.4
1.5
1.8
1.85
2.0
2.5
3.3
19.6
29.4
39.2
49.9
59.0
68.1
78.7
88.7
118
124
137
187
267
U1 AAT2504 QFN34-20
L1 Sumida CDRH2D14 or Coltronics SD3812
6.65
13.3
19.6
26.1
32.4
39.2
59
C2, C7 10uF, 6.3V, X5R, 0805 GRM219R60J106KE19
C5, C6 2.2uF, 10V, X5R, 0603 GRM188R61A225KE34
C8, C9 1uF, 6.3V, X5R, 0603 GRM185R60J105KE26
61.9
71.5
105
124
137
158
Figure 3: AAT2504 Evaluation Board Schematic.
w w w . a n a l o g i c t e c h . c o m
18
2504.2008.02.1.2
ANALOGICTECH [ ADVANCED ANALOGIC TECHNOLOGIES ]
