AAT2846 Datasheet, PDF (22/25 Pages) Advanced Analogic Technologies – High Current Charge Pump with Dual LDO for Backlight and Flash Applications

AAT2846
High Current Charge Pump with Dual LDO
for Backlight and Flash Applications
VIN
C11
0.1μF
VIN
DATA
LIGHT
MOVIE
FLASH
R1 R2 R3 R4
1K 1K 1K 1K
SW1
SW2
SW3
SW4
U3
AAT4290
1 _IN
OUT3 ⁸
2 _{OUT2 OUT4} 7
3 _{OUT1 OUT5} 6
4 _{EN/SET GND} 5
J2
ENBL
J3
ENFL
J4
ENLA
J5
ENLB
ENBL
ENFL
ENLA
ENLB
R6 R7 R8 R9
100K 100K 100K 100K
VIN
U2
1 _VDD
2 _GP5
3 _GP4
4 _GP3
VSS ⁸
GP0 ⁷
GP1 ⁶
GP2 ⁵
PIC12F675
C10
0.1μF
R5
330
LED7
RED
CTRL_CT
DC-
Figure 9: MCU and I/O Expander Section Schematic
22
2846.2007.08.1.0