AAT1151 Datasheet, PDF (11/16 Pages) Advanced Analogic Technologies – 850kHz 700mA Synchronous Buck DC/DC Converter

AAT1151
850kHz 700mA Synchronous Buck DC/DC Converter
Figure 2: MSOP Evaluation
Board Top Layer.
Figure 3: MSOP Evaluation
Board Bottom Layer.
Figure 4: QFN Evaluation Board
Top Side.
Figure 5: QFN Evaluation Board
Bottom Side.
45
R4=10kΩ
40
35
30
25
20
15
10
5
0
1
1.5
2
2.5
3
3.5
4
4.5
5
5.5
Output Voltage (V)
2.7V-5.5V
5
R1 100 ₄
C1
10µF
R2
3
100k
2
C3
0.1 µF
AAT1151-1.0
Vp FB ¹
Vcc LX
7
EN LX
6
gnd Pgnd
8
Vo+ 1.25V 0.7A
R3
2.55k 1%
L1
3.3µH
R4
10kΩ 1%
C2, C4
2x 22µF
V-
C1 Murata 10µF 6.3V X5R GRM42-6X5R106K6.3
C2, C4 MuRata 22µF 6.3V GRM21BR60J226ME39L X5R 0805
L1 Sumida CDRH3D16-3R3 NC
Figure 6: R3 vs. V_OUT for Adjustable Output
Using the AAT1151-1.0V.
Figure 7: Adjustable Output Schematic.
1151.2005.11.1.4
11