AAT1189 Datasheet, PDF (15/19 Pages) Advanced Analogic Technologies – High Voltage Step-Down Regulator

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PRODUCT DATASHEET
AAT1189
High Voltage Step-Down Regulator
V_IN
6.0V - 25.0V
VCC
+
C1
100µF
25V
C11
open
3
C12
2
1µF
1
25V EN
1 _LX
U1
LX ¹⁶
2 _LX
LX ¹⁵
3 _LX
RS ⁸
4 _LX
OS ⁹
AAT1189
5 _LX
C2
0.1µF
FB ¹¹
6 _BST
D1
BAS16
COMP ¹⁰
13 _VL
C3
2.2µF
GND ¹²
14 _{IN EP EN 7}
L1 4.7µH
D2
R1
B340A 6.34K
C4
68nF
C7
330pF
R8
open
R6 R3
6.34k 499
R2
C5
24.3K 220pF
C6
56pF
R7
649k
VOUT
5V/2.5A
R4
44.2k
C8 C9 C10
22µF 22µF open
R5
6.04k
TDFN34-16
U1
AAT1189 Analogic Technologies, Hi-Voltage Buck, TDFN34-16
C1
Cap, MLC, 100uF/25V, Electrolytic
C2
Cap, MLC, 0.1µF/6.3V, 0402
C3
Cap, MLC, 2.2µF/6.3V, 0805
C4
Cap, MLC, 68nF/16V, 040
C5, C6, C7 Cap, MLC, misc, 04022
C8, C9 Cap, MLC, 22µF/10V, 1206
D1
BAS16, Generic, Rectifier, 0.2A/85V, Ultrafast, SOT23
D2
B340A, Generic, Schottky Rectifier, 3A/40V, SMA
L1
RCH108NP-4R7M, 4.7µH, Sumida, I_SAT = 5.3A, or 7447789004, 4.7µH, Wurth, I_SAT = 3.9A
R1-R8
Carbon film resistor, 0402
Figure 4: AAT1189IRN Evaluation Board Schematic.
Figure 5: AAT1189IRN Evaluation Board
Top Layer.
Figure 6: AAT1189IRN Evaluation Board
Bottom Layer.
1189.2008.06.1.0
www.analogictech.com
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