Only For Training And Service Purposes - LG GD580 Service Manual

3.1.15 LED Driver IC
AN32053AA is equipped with a LED driver for LCD backlights, a driver for LED matrix, a driver
for RGB, and light intensity controller. Voltage is supplied by a step-up charge pump DC/DC
converter.
• RGB
- It is possible to set the current value, PWM duty, slope setting at PWM duty change, PWM
duty reflected the value of light sensor and firefly setting for each driver.
- Setting of PWM duty reflected the value of light sensor, normal one and firefly setting are an
exclusive use.
• Matrix LED drivers
- It is possible to set the current value and firefly setting for each forty nine LED drivers.
• Features
- LED matrix driver 7X7
- Step-up charge pump DC/DC converter : 300mA
- LDO : 2-ch.
- GPIO : 3-ch.
- I2C Interface
- LED drivers(for RGB : 3-ch, matrix LED driver : 7x7-ch)
V B A T
V B
B L U E
G R E E N
R E D
O U T 3
O U T 2
O U T 1
O U T 0
A P P _ G P _ L E D _ M _ C T R L
A C C _ G P _ L E D _ M _ L D O _ E N
A P P _ G P _ L E D _ M _ S D A
A P P _ G P _ L E D _ M _ S C L
A C C _ G P L E D _ M _ R E S _ N
_
Copyright © 2009 LG Electronics. Inc. All right reserved.

Only for training and service purposes

O O S T
V D D E _ 1 V 8
C N 1 0 1
1
2
3
4
5
6
7
8
9
1 0
1 1
1 2
1 3
1 4
1 5
1 6
1 7
1 8
1 9
2 0
2 1
0 4 6 - 2 9 3 0 - 2 1 0 - 0 1 8 - 2 9
Figure 3-1-15. Matrix LED and RGB LED
G R E E N
B L U E
R E D
- 43 -
3. Technical brief
1
R
2 4
G
O U T 0
3
B
1
R
2 4
G
O U T 1
3
B
1
R
2 4
G
O U T 2
3
B
1
R
2 4
G
O U T 3
3
B
LGE Internal Use Only