AAT2847
Four-Channel Backlight Driver with Dual LDOs
Pin Configuration
AAT2847-EE
TQFN34-20
(Top View)
D3
GND
ENA
FBB
20
19
18
17
AAT2847-QG/QI
TQFN34-20
(Top View)
D3
GND
ENA
N/C
20
19
18
17
D2
D1
LDOB
IN
PGND
IN
1
2
3
4
5
6
10
9
7
8
16
15
14
13
12
11
D4
ENB
EN/SET
C1+
C1-
OUT
D2
D1
LDOB
IN
PGND
IN
1
2
3
4
5
6
10
9
7
8
16
15
14
13
12
11
D4
ENB
EN/SET
C1+
C1-
OUT
C2+
C2-
LDOA
N/C
Absolute Maximum Ratings
1
T
A
= 25°C, unless otherwise noted. Pin descriptions below apply to AAT2847-EE (AAT2847-QG/QI)
Symbol
V
N
V
N
V
N
T
J
T
LEAD
C2+
C2-
LDOA
FBA
Description
[IN, OUT, D1, D2, D3, D4] to GND
[C1+, C1-, C2+, C2-] to GND
[LDOA, LDOB, FBA, FBB, EN/SET, ENA, ENB] to GND
Operating 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
-40 to 150
300
Units
V
V
V
°C
°C
Thermal Information
2, 3
Symbol
θ
JA
P
D
Description
Thermal Resistance
Maximum Power Dissipation
Value
50
2
Units
°C/W
W
1. 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 in not implied. Only one Absolute Maximum Rating should be applied at any one time.
2. Derate 20mW/°C above 40°C ambient temperature.
3. Mounted on a FR4 circuit board.
2847.2007.09.1.0
3
ANALOGICTECH [ ADVANCED ANALOGIC TECHNOLOGIES ]
