PRODUCT DATASHEET
AAT2861
TM
ChargePump
Backlight/Flash LED Driver and Multiple LDO Lighting Management Unit
Pin Configuration
TQFN34-24
(Top View)
24
23
22
21
20
1
2
3
4
19
18
17
16
15
14
13
OUT
C2+
FL1
BL7 (FL2)
BL6
EN/SET
_
FL EN
BL5
_
5
6
7
EN LDOA
BL4
_
EN LDOB/C
BL3
AGND
BL2
8
9
10
11
12
Part Number Descriptions1
Backlight LED Outputs
Part Number
Main
Sub
Flash LED Outputs
AAT2861IMK-1-T1
AAT2861IMK-2-T1
AAT2861IMK-3-T1
4
4
5
3
2
2
1
2
1
Absolute Maximum Ratings2
Symbol Description
Value
Units
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
-0.3 to 6.0
-0.3 to VOUT + 0.3
-0.3 to VIN + 0.3
-0.3 to 0.3
V
V
V
V
TJ
TLEAD
Operating Junction Temperature Range
Maximum Soldering Temperature (at leads, 10 sec)
-40 to 150
°C
°C
300
Thermal Information3,4
Symbol Description
Value
Units
PD
θJA
Maximum Power Dissipation
Maximum Thermal Resistance
2.0
50
W
°C/W
1. Backlight and Flash Configuration within a part number is configured though the AS2Cwire 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.
w w w . a n a l o g i c t e c h . c o m
2861.2009.02.1.2
3
AAT [ ADVANCED ANALOG TECHNOLOGY, INC. ]
