AAT2689 Datasheet, PDF (16/20 Pages) Advanced Analogic Technologies – PMIC Solution for 12V Adapter Systems with 2-Output High Performance Step-Down Converters

DATA SHEET
AAT2689
PMIC Solution for 12V Adapter Systems
with 2-Output High Performance Step-Down Converters
V IN1
6.0V - 24.0V
C1 ⁺
100μF
25V
EN1
C15
1μF
25V
C4
0.1μF
2 D1
J1
BAS16
1
C6
2.2μF
3
2
1
V IN2
C5
2.2μF
U1
2 _{BST1 LX1} 16
12 _VL1
LX1 ¹⁵
1 _IN1
RS1 ⁴
EP2
14 _IN1
OS1 ⁵
AAT2689
3 _EN1
FB1 ⁷
9 _{IN2 COMP1} 6
3
28
1
EN2
11
EN 2 OUT2 ¹⁰
EP1
AGND GND ¹³
TDFN34-16
L1
4.7μH/5.3A
C8
330pF
D2 R2
2k
C7
R6 ^220nF
open
R7 R5
2k 499
R1 24.3k
C3
56pF
C2
470pF
VOUT2
R8
1.8V/600mA ^133k
C10 C14
2.2μF open
V OUT1
3.3V/2.5A
R3
27.4k
C9 C11 C12, C13
22μF 22μF open
R4
6.04k
U1
C1
C5, C6, C10
C4
C2, C3, C7, C8
C9, C11
D1
D2
L1
R1 - R8
C15
AAT2689 Skyworks, Hi-Voltage Buck/LDO, TDFN34-16
Cap, MLC, 100μF/25V, Electrolytic cap
Cap, MLC, 2.2μF, 6.3V, 0805
Cap, MLC, 0.1μF/6.3V, 0603
Cap, MLC, misc., 0603
Cap, MLC, 22μF/10V, 1206
BAS16, Generic, Rectifier, 0.2A/85V, Ultrafast, SOT23
B340A, Generic, Schottky Rectifier, 3A/40V, SMA
RCH108NP-4R7M, 4.7μF, I_SAT = 5.3A, DCR = 11.7mΩ or Wurth 744 778 900 4, 4.7μH, I_SAT = 3.9A, DCR = 35mΩ
Carbon film resistor, 0402
Cap, MLC,1μF/25V, 0603
Figure 4: AAT2689IRN Evaluation Board Schematic For V_IN = 6V to 24V and V_OUT = 3.3V.
Figure 5: AAT2689IRN Evaluation
Board Top Layer.
Figure 6: AAT2689IRN Evaluation
Board Bottom Layer.
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [e-mail] • www.skyworksinc.com
16
202035A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • June 8, 2012