AAT2846_08 Datasheet, PDF (19/22 Pages) Advanced Analogic Technologies – High Current Charge Pump with Dual LDO for Backlight and Flash Applications

PRODUCT DATASHEET
AAT2846
ChargePump^TM High Current Charge Pump with Dual LDO for Backlight and Flash Applications
Evaluation Board Schematics
DC+
J1
123
D1 D2 D3 D4 D5 D6
VIN
C12
100µF
optional 100µF
lab supply bypass
ENLA
D7 D8
VOUT
280K yields
300mA/chnl
max flash
R10
280K
U1
ENFL
CTRL_CT
C9
0.1µF
C8
0.1µF
OUTB
Programmed for 2.8V
output by default
1
D3
2
D2
3
D1
4
AGND
5
CT
6
CREF
7
FBB
21
F2
20
ENS
19
PGND
18
IN
17
C2-
16
C2+
15
ENB
C2
1.0µF
8 9 10 11 12 13 14
R11
160K
R12
120K
C6
2.2µF
C5
2.2µF
C1
1.0µF
R13
60.4K
C7
2.2µF
R14
120K
Programmed for 1.8V
output by default
C4
4.7µF
VOUT
C3
2.2µF
ENBL
ENLB
OUTA
Figure 8: AAT2846 Section Schematic.
2846.2008.03.1.1
www.analogictech.com
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