AAT2833/34
240mA Total Display Solution
for Portable Devices
Pin Description
Pin #
1
2
3
4
5, 17, 18, 19, 20
6
7
8
9
10
11
12
13
14
15
16
21
22
23
24
EP
Symbol
BL3
BL2
BL1
AGND
N/C
EN/SET
R
G
B
C2+
C2-
OUT
IN
C1+
C1-
PGND
BSET
BL6
BL5
BL4
Function
Power return (cathode) for backlight channel 3. If not used, connect to the OUT pin.
Power return (cathode) for backlight channel 2. If not used, connect to the OUT pin.
Power return (cathode) for backlight channel 1. If not used, connect to the OUT pin.
Signal ground.
Not connected.
Enable and AS
2
Cwire serial interface control input.
Power return (cathode) for Red LED of the RGB module.
Power return (cathode) for Green LED of the RGB module.
Power return (cathode) for Blue LED of the RGB module.
Positive node of flying capacitor 2.
Negative node of flying capacitor 2.
Output voltage pin. Connect to anode of all LEDs.
Input voltage pin.
Positive node of flying capacitor 1.
Negative node of flying capacitor 1.
Power ground.
Maximum backlight current programming resistor input. Ground this pin to use
default values.
Power return (cathode) for backlight channel 6. If not used, connect to the OUT pin.
Power return (cathode) for backlight channel 5. If not used, connect to the OUT pin.
Power return (cathode) for backlight channel 4. If not used, connect to the OUT pin.
Exposed pad (bottom); connect to GND directly beneath the package.
Pin Configuration
TQFN44-24
(Top View)
N/C
N/C
BSET
BL6
BL5
BL4
24
23
22
21
20
19
BL3
BL2
BL1
AGND
N/C
EN/SET
1
2
3
4
5
6
10
11
12
7
8
9
18
17
16
15
14
13
N/C
N/C
PGND
C1-
C1+
IN
OUT
C2-
C2+
B
G
R
2833.2007.09.1.0
2
ANALOGICTECH [ ADVANCED ANALOGIC TECHNOLOGIES ]
