AAT1185 Datasheet, PDF (12/16 Pages) Skyworks Solutions Inc. – High Voltage Step-Down Controller

DATA SHEET
AAT1185
High Voltage Step-Down Controller
VIN
6V - 24V
D1
BAS16
C7
2.2μF
3
2
1
EN
C1, C2,
C4, C6
open
C3
470μF
25V
C5
10μF
25V
U1
11
VCC
BST ⁴
9 _VCC
DH ^{5 R1}
3.32
C8
0.1μF
Q1
Si7326DN
10
HV
6
LX
AAT1185
3 _EN
DL ^{8 R2}
3.32
L1
3.9μH
Q2
R3
Si7326DN 1.74K
12 _GND
RS ¹
7 _{PGND OS 2}
C9
0.47μF
14 _{COMP FB} 13
TSOPJW-14
R4 C10
C11
20K 33pF 680pF
VOUT
3.3V/10A
R5
1k
R6
27.4K
C12
680pF
C13, C14 C15, C16
2x47μF open
R7
6.04k
U1
C3
C5
C7
C8
C9
C10, C11, C12
C13, C14
R1-R7
D1
Q1, Q2
L1
L1
L1
AAT1185 Skyworks, Hi-Voltage Buck Controller, TSOPJW-14
Cap, MLC, 470μF/25V, Electrolytic
Cap, MLC, 10μF/25V, 1210
Cap, MLC, 2.2μF/6.3V, 0603
Cap, MLC, 0.1μF/6.3V, 0603
Cap, MLC, 0.47μF/6.3V, 0603
Cap, MLC, misc, 0402
Cap, MLC, 47μF/10V, 1210
Carbon film resistor, 0402
BAS16, Generic, Rectifier, 0.2A/85V, Ultrafast, SOT23
Si7326DN, Vishay, N-Channel, 30V, 10A, PAK 1212-8
B82559A0392A013, 3.9μH, Epcos, ISAT = 12A, DCR = 4.8mΩ
RLF12560T-4R2N100, 4.2μH, TDK, ISAT = 10.2A, DCR = 7.4mΩ
SER2013-472ML, 4.7μH, Coicraft, ISAT = 18A, DCR = 1.7mΩ
Figure 4: AAT1185ITO Evaluation Board Schematic for V_IN = 6V-24V and V_OUT = 3.3V.
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [e-mail] • www.skyworksinc.com
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202001A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • May 31, 2012