PRODUCT DATASHEET
AAT2846
ChargePumpTM High Current Charge Pump with Dual LDO for Backlight and Flash Applications
U3
VIN
J2
J3
J4
J5
ENBL
ENFL
ENLA
ENLB
AAT4290
1
2
3
4
8
7
6
5
ENBL
ENFL
ENLA
ENLB
IN
OUT2
OUT1
OUT3
OUT4
OUT5
C11
0.1µF
EN/SET GND
R6
R7
R8
R9
100K 100K 100K 100K
VIN
VIN
R1 R2 R3 R4
1K 1K 1K 1K
U2
C10
0.1µF
R5
1
8
7
6
5
VDD
2
VSS
GP0
GP1
GP2
330
GP5
3
DATA
SW1
SW2
SW3
SW4
GP4
4
LED7
RED
GP3
LIGHT
MOVIE
FLASH
PIC12F675
CTRL_CT
DC-
Figure 9: MCU and I/O Expander Section Schematic.
Evaluation Board Component Listing
Component
Part#
Description
Manufacturer
U1
AAT2846INJ-EE-T1
High Eff. 1X/1.5X/2X CP for White LED, Dual LDO
AnalogicTech
U2
U3
PIC12F675
AAT4290IJS-1-T1
LW M673
8-bit CMOS, FLASH MCU; 8-pin PDIP
I/O Expander
Microchip
AnalogicTech
OSRAM
Lumileds
Murata
D1-D6
D7, D8
C1, C2
C3-C7
C4
C8-C11
C12
R1-R4
R5
R6-R9
R10
R11
R12, R14
R13
J1-J5
LED7
SW1-SW4
Mini TOPLED White LED; SMT
Luxeon Flash LED
LXCL-PWF1
GRM18x
GRM18x
GRM18x
GRM18x
1.0µF, 10V, X5R, 0603, Ceramic
2.2µF, 10V, X5R, 0603, Ceramic
4.7µF, 10V, X5R, 0603, Ceramic
0.1µF, 16V, X7R, 0603, Ceramic
100µF, 10V, 10µA, Tantalum
1K, 5%, 1/4W; 1206
Murata
Murata
Murata
AVX
Vishay
Vishay
Vishay
Vishay
TAJBx
Chip Resistor
Chip Resistor
Chip Resistor
Chip Resistor
Chip Resistor
Chip Resistor
Chip Resistor
PRPN401PAEN
CMD15-21SRC/TR8
PTS645TL50
330, 5%, 1/4W; 1206
100K, 5%, 1/10W; 0603
280K, 1%, 1/10W; 0603
160K, 1%, 1/10W; 0603
120K, 1%, 1/10W; 0603
60.4K, 1%, 1/10W; 0603
Conn. Header, 2mm Zip
Red LED; 1206
Vishay
Vishay
Vishay
Sullins Electronics
Chicago Miniature Lamp
ITT Industries
Switch Tact, SPST, 5mm
w w w . a n a l o g i c t e c h . c o m
20
2846.2008.03.1.1
ANALOGICTECH [ ADVANCED ANALOGIC TECHNOLOGIES ]
