AAT3105 Datasheet, PDF (12/15 Pages) Advanced Analogic Technologies – Low Cost 1x/2x 4 Channel Charge Pump WLED Driver

ChargePump^TM
PRODUCT DATASHEET
AAT3105178
Low Cost 1x/2x 4 Channel Charge Pump WLED Driver
Evaluation Board PCB Layout
Figure 3: AAT3105 Evaluation Board Top Layer.
Figure 4: AAT3105 Evaluation Board Bottom Layer.
Evaluation Board Schematic
DC+
DC-
DC+
J1
C
1
2
3
10µF
VIN
C2
1µF
JP1
D4 D3 D2 D1
JP2 JP3 JP4
U1
JP5
1 _D2
D3 ¹⁰
C1
1µF
C-
C+
IN
2 _D1
D4 ⁹
3 _OUT
VIN ⁸
4 _{C- EN/PWM} 7
5 _C+
GND ⁶
AAT3105
C3
EN
1µF
EN
PWM
R2
20K
C6
4.7µF
S1
UP
S2
DOWN
S3
CYCLE
R5 R4 R3
1K 1K 1K
S1
S2
S3
U2
PIC12F675
1 _VDD
2 _GP5
3 _GP4
4 _GP3
VSS ⁸
GP0 ⁷
GP1 ⁶
GP2 ⁵
VR1
POT10K
C4
0.1µF
R6
330
LED1
Green
PWM
Figure 5: AAT3105 Evaluation Board Schematic.
R7
330
LED2
Red
MCU Power
12
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3105.2008.10.1.0