AAT2845
Four-Channel Backlight Driver with Dual LDOs
J2
R6
EN/SET
220
3
2
1
R7
100K
VIN
VIN
R1 R2 R3
1K 1K 1K
U2
C8
1µF 330
R5
1
2
3
4
8
7
6
5
VDD
VSS
GP0
GP1
GP2
GP5
GP4
GP3
LED7
RED
DATA
LIGHT
ENLDO
SW1
SW2
SW3
PIC12F675
J3
ENL
3
2
1
R4
100K
DC-
Figure 6: MCU Section Schematic.
Evaluation Board Component Listing
Component Part#
Description
Manufacturer
U1
U2
AAT2845IML-EE-T1
Four-Channel Backlight Driver with Dual LDOs
8-bit CMOS, FLASH MCU; 8-pin PDIP
Mini TOPLED White LED; SMT
1.0µF, 10V, X5R, 0603, ceramic
2.2µF, 10V, X5R, 0603, ceramic
0.1µF, 16V, X7R, 0603, ceramic
1µF, 10V, X5R, 1206, ceramic
100µF, 10V, 10µA, tantalum
1K, 5%, 1/4W; 1206
AnalogicTech
Microchip
OSRAM
Murata
PIC12F675
LW M673
D1 - D4
C1 - C3
C4 - C6
C7
GRM18x
GRM18x
Murata
GRM18x
Murata
C8
GRM31x
Murata
C9
TAJBx
AVX
R1 - R3
R4, R7
R5
Chip Resistor
Chip Resistor
Chip Resistor
Chip Resistor
Chip Resistor
Chip Resistor
Chip Resistor
PRPN401PAEN
CMD15-21SRC/TR8
PTS645TL50
Vishay
100K, 5%, 1/4W; 1206
Vishay
330, 5%, 1/4W; 1206
Vishay
R6
220, 5%, 1/4W; 1206
Vishay
R8
60.4K, 1%, 1/10W; 0603
Vishay
R9, R11
R10
120K, 1%, 1/10W; 0603
Vishay
160K, 1%, 1/10W; 0603
Vishay
J1 - J3
LED7
SW1 - SW3
Conn. Header, 2mm zip
Sullins Electronics
Red LED; 1206
Chicago Miniature Lamp
ITT Industries
Switch Tact, SPST, 5mm
2845.2006.12.1.0
17
ANALOGICTECH [ ADVANCED ANALOGIC TECHNOLOGIES ]
