DATA SHEET
AAT2822/2823/2824/2825
TFT-LCD DC/DC Converter with WLED Driver and VCOM Buffer
VIN
10V C1
4.7μF
R1
0Ω
10V C2
0.1μF
AGND
U1
1
2
3
4
5
6
18
17
16
15
14
13
N/C
N/C
N/C
PGND2
REF
1.2V
N/C
FBN
AAT2825
0.22μF
6.3V
C7
R10
6.04kΩ
FBN
N/C
0.6V
R2
WEN
DRVN
FB
R11
Adj
COMP
0V
VGL (negative)
R3
6.04kΩ
200kΩ
R9
Adj
C8
100pF
C3
10μF
10V
L1
2.2μH
LX
DRVN
D1
VAVDD
VIN
VDD
A2
C6
C23
0.1μF
25V
22μF
J2
25V
2
1
5
4
WEN
C12
0.6V R6
Adj
VIN
6
3
C26
FBP
0.1μF
25V
C18
0.22μF
25V
J1
J4
10pF
stage 2
EN
A1
R7
6.04kΩ 25V
C13
DRVP
R18
VIN
VIN
open
0.1μF
50V
C19
0.22μF
50V
C10
BAT54SDW
A3
R19
0Ω
3
6
4
5
1
2
VDD
VAVDD
AVDD
0.1μF
25V
J5
J6
2
1
5
4
stage 3
stage4
C16
0.22μF
25V
C14
C11
stage2
J8
6
3
0.1μF
50V
0.1μF
50V
C20
0.22μF
50V
C17
0.22μF
50V
C15
BAT54SDW
A4
0.1μF
50V
C21
0.22μF
50V
C27
stage3
stage4
BAT54SDW
J9
3
6
4
5
1
2
0.1μF
50V
C29
0.22μF
50V
C28
J10
0.1μF
50V
VGH (positive)
C30
0.22μF
50V
BAT54SDW
Figure 9: AAT2825IBK Evaluation Board Schematic.
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
25
202081B
• Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • August 2, 2012
AAT [ ADVANCED ANALOG TECHNOLOGY, INC. ]
