PRODUCT DATASHEET
AAT1184
TM
SwitchReg
High Voltage Step-Down Regulator
VOUT
5V/1.2A
U1
L1
4
3
8
5
LX
LX
4.7µH
C2
D2
B340A
0.1µF
C4
C7
R1
2.32k
BST
VL
68nF
330pF
1
RS
OS
R4
44.2k
D1
BAS16
R3
0
R7
499
R8
open
C8
22µF
C9
C10
12
open open
VIN
C3
2.2µF
R6
open
AAT1184
6V - 24V
6
7
10
11
9
FB
IN
R5
6.04k
IN COMP
+
R2
24.3K
C5
220pF
C1
C11
C12
1µF
25V
22µF open
25V
2
EN
GND
EN
C6
56pF
TSOPJW-12
U1
C1
C2
C3
AAT1189 Analogic Technologies, Hi-Voltage Buck, TSOPJW-12
Cap, MLC, 100µF/25V, Electrolytic cap
Cap, MLC, 0.1µF/6.3V, 0603
Cap, MLC, 2.2µF/6.3V, 0602
C4,C5,C6,C7 Cap, MLC, misc, 0603
C8
Cap, MLC, 22µF/6.3V, 1206
C12
D1
Cap, MLC, 1µF/25V, 1206
BAS16, Generic, Rectifier, 0.2A/85V, Ultrafast, SOT-23
B340A, Generic, Schottky Rectifier, 3A/40V, SMA
SLF7045T-4R7M2R0-PF, TDK, 4.7µH, ISAT = 2A, DCR = 30mΩ
Carbon film resistor, 0402
D2
L1
R1-R6
Figure 4: AAT1184ITP Evaluation Board Schematic.
Figure 5: AAT1184ITP Evaluation Board
Top Layer.
Figure 6: AAT1184ITP Evaluation Board
Bottom Layer.
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1184.2008.07.1.0
15
ANALOGICTECH [ ADVANCED ANALOGIC TECHNOLOGIES ]
