AAT2833/34
240mA Total Display Solution
for Portable Devices
Evaluation Board Schematic
VOUT
D1
D2
D3
D4
D5
D6
DC+
VIN
R9 = 280K for
30mA/chnl backlight.
J1
R9
280K
Optional 100μF
lab supply bypass
C7
24
23
22
21
20
19
U1
AAT2833
1
2
3
4
5
6
18
BL3
N/C
N/C
17
16
15
14
13
BL2
BL1
PGND
C1-
AGND
N/C
C1
C1+
1.0μF
EN
EN/SET
VIN
C4
4.7μF
7
8
9
10
11
12
C3
C2
1.0μF
2.2μF
RGB
Optional footprints for
auxiliary lighting LEDs
R
G
B
.
Figure 8: AAT2833/34 Evaluation Board Schematic.
R7
220
EN
J2
R8
100K
VIN
VIN
R1 R2 R3 R4 R5
1K 1K 1K 1K 1K
U2
C6
1μF
R6
1
2
3
4
8
7
6
5
VDD
VSS
GP0
GP1
GP2
330
GP5
GP4
GP3
SW1
SW2
SW3
SW4
SW5
LED7
RED
PIC12F675
Figure 9: AAT2833/34 Microcontroller Section Schematic.
18
2833.2007.09.1.0
ANALOGICTECH [ ADVANCED ANALOGIC TECHNOLOGIES ]
