PRODUCT DATASHEET
AAT1161
TM
SwitchReg
13.2V Input, 3A Step-Down Converter
JP1
R1
4.75K
EN
R2
D1
Schottky
TP1
LX
NP
DGND
U1
VOUT
AAT1161
TP2
L1
VIN
TP3
6
10
11
9
8
1
2
EN
IN
LX
LX
3.3µH
VOUT
TB1
C1
VIN
TB2
IN
FB
R3
10
R4
43.2K
0.1µF
C2
COMP
100pF
13
3
7
AIN
AGND
N/C
R5
51.0K
4
12
VOUT
TB4
DGND
PGND
C3
22µF
C4
22µF
C5
22µF
C6
150pF
NP
VIN
TB3
C7
22µF
TP4
5
14
DGND
LDO
EP
C8
LDO
R6
5.90K
0.1µF
C9
150pF
C10
0.1µF
GND
TP5
GND
TP7
GND
GND
DGND PGND
PGND
AGND
Note: Connect GND, DGND, PGND, and AGND at IC
C2 - Increase C2 to reduce overshoot
Figure 2: AAT1161 Evaluation Board Schematic.
Figure 3: AAT1161 Evaluation Board
Top Side Layout.
Figure 4: AAT1161 Evaluation Board
Bottom Side Layout.
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14
1161.2008.03.1.0
ANALOGICTECH [ ADVANCED ANALOGIC TECHNOLOGIES ]
