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

DATA SHEET
AAT1189
High Voltage Step-Down Regulator
VIN
6.0V - 25.0V
+
C1
100µF
25V
VCC
C11
1µF
50V
3
2
1
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 Skyworks, Hi-Voltage Buck, TDFN34-16
C1
Cap, MLC, 100µF/25V, Electrolytic
C2
Cap, MLC, 0.1µF/6.3V, 0402
C3
Cap, MLC, 2.2µF/6.3V, 0805
C4
Cap, MLC, 68nF/16V, 0402
C5, C6, C7 Cap, MLC, misc, 0402
C8, C9 Cap, MLC, 22µF/10V, 1206
C11
Cap, MCL, 1µF/50V, 0805
D1
BAS16, Generic, Rectifier, 0.2A/85V, Ultrafast, SOT23
D2
B340A, Generic, Schottky Rectifier, 3A/40V, SMA
L1
R1-R8
RCH108NP-4R7M, 4.7µH, Sumida, I_SAT = 5.3A, or 7447789004, 4.7µH, Wurth, I_SAT = 3.9A
Carbon film resistor, 0402
Figure 4: AAT1189IRN Evaluation Board Schematic.
Figure 5: AAT1189IRN Evaluation Board
Top Layer.
Figure 6: AAT1189IRN Evaluation Board
Bottom Layer.
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [e-mail] • www.skyworksinc.com
202002A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • May 31, 2012
15