PRODUCT DATASHEET
AAT2861
ChargePump
TM
Backlight/Flash LED Driver and Multiple LDO Lighting Management Unit
Pin Configuration
TQFN34-24
(Top View)
PGND
C2-
C1-
IN
C1+
24
23
22
21
20
19
18
17
16
15
14
13
8
9
10
11
12
OUT
C2+
EN/SET
FL_EN
_LDOA
EN
EN_LDOB/C
AGND
1
2
3
4
5
6
7
FL1
BL7 (FL2)
BL6
BL5
BL4
BL3
BL2
BL1
LDOA
LDOB
IN
LDOC
Part Number Descriptions
1
Backlight LED Outputs
Part Number
AAT2861IMK-1-T1
AAT2861IMK-2-T1
AAT2861IMK-3-T1
Main
4
4
5
Sub
3
2
2
Flash LED Outputs
1
2
1
Absolute Maximum Ratings
2
Symbol
Description
IN, OUT, BL1, BL2, BL3, BL4, BL5, BL6, BL7/FL2, FL1 Voltage to AGND
C1+, C2+ Voltage to AGND
C1-, C2-, LDOA, LDOB, LDOC, EN/SET, FL_EN, EN_LDOA, EN_LDOB/C Voltage to AGND
PGND Voltage to AGND
Operating Junction Temperature Range
Maximum Soldering Temperature (at leads, 10 sec)
Value
-0.3 to 6.0
-0.3 to V
OUT
+ 0.3
-0.3 to V
IN
+ 0.3
-0.3 to 0.3
-40 to 150
300
Units
V
V
V
V
°C
°C
T
J
T
LEAD
Thermal Information
3,4
Symbol
P
D
θ
JA
Description
Maximum Power Dissipation
Maximum Thermal Resistance
Value
2.0
50
Units
W
°C/W
1. Backlight and Flash Configuration within a part number is configured though the AS
2
Cwire serial interface. For example, disabling the “Main Equals Sub” feature (Address 8,
Data 5 - 8) in the AAT2861-1 will configure BL1-BL4 LED outputs as MAIN and BL5-BL7 outputs as SUB.
2. Stresses above those listed in Absolute Maximum Ratings may cause permanent damage to the device. Functional operation at conditions other than the operating conditions
specified is not implied. Only one Absolute Maximum Rating should be applied at any one time.
3. Derate 20mW/°C above 25°C ambient temperature.
4. Mounted on a FR4 circuit board.
2861.2009.02.1.2
www.analogictech.com
3
AAT [ ADVANCED ANALOG TECHNOLOGY, INC. ]
