AAT2856INJ-EE-T1 Advanced Analog Technology, Inc., AAT2856INJ-EE-T1 Datasheet - Page 15

• Manufacturer Part Number: AAT2856INJ-EE-T1
• Description: High Current Charge Pump with Dual LDO for Backlight Applications
• Manufacturer: Advanced Analog Technology, Inc.

ChargePump
ChargePump
Evaluation Board Schematics
2856.2008.02.1.3
2856.2008.02.1.3
J1
DC+
1
OUTB
ENA
2
3
C12
100μF
TM
TM
V
VIN
OUT
lab supply bypass
100μF (optional)
1.2
1.8
2.8
1.5
2.5
3.3
A/B(V) R2 (Ω), R1 = 59k
2.8V output by default
High Current Charge Pump with Dual LDO for Backlight Applications
High Current Charge Pump with Dual LDO for Backlight Applications
Programmed for
R4 (Ω), R3 = 59k
R4 short, R5 open (R2 short, R1 open)
29.4K
78.7K
14.7K
63.4K
105K
D1
0.1μF
C8
D2
Figure 6: AAT2856 Section Schematic.
D3
R2
78.7k
R1
59k
1
2
3
4
5
6
7
D4
BL3
BL2
BL1
AGND
AGND
REF
FBB
C6
2.2μF
2.2μF
w w w . a n a l o g i c t e c h . c o m
w w w . a n a l o g i c t e c h . c o m
28
C5
8
D5
27
9
26
10
D6
25
11
24
12
23
13
R4
29.4k
R3
59k
22
14
C1
1.0μF
PGND
OUT
ENB
ENS
C2+
U1
AAT2856
C2-
C7
2.2μF
Programmed for
1.8V output by default
IN
21
20
19
18
17
16
15
C2
1.0μF
C3
2.2μF
PRODUCT DATASHEET
PRODUCT DATASHEET
J2
0
VOUT
C4
4.7μF
VOUT
AAT2856
AAT2856
OUTA
ENS
ENB
15
15