EV-151

AAT2830/31 EVAL: 800mATotal Display Solution for Portable Devices

EVALUATION BOARD DATASHEET

2

EV151.2007.10.1.0

www .analogictech.com

EV-151

AAT2830/31 EVAL: 800mATotal Display Solution for Portable Devices

EVALUATION BOARD DATASHEET

2

EV151.2007.10.1.0

www .analogictech.com

Button(s) Pressed/Released

Description

RGB

Turns on/off red, blue, and green LEDs

Button Press/Release

Red LED

Blue LED

Green LED

1st

on

off

off

2nd

off

on

off

3rd

off

off

on

4th, repeat

off

off

off

FLASH

Engages flash mode operation (D7-D8 LEDs) for a progammed time duration

MOVIE

Turns on/off D7-D8 LEDs for movie mode operation

LIGHT

Turns on/off D1-D6 LEDs for backlight operation

DATA

Increments [cycles through when not released] data of targeted address (previously

pressed/released button):

1. RGB [Red LED (address 7), Green LED (address8), Blue LED (address 9)]

2. MOVIE (address 4)

3. LIGHT (address 0)

4. see “LIGHT+DATA”

LIGHT+DATA

Increments the target address [default (address 0)]:

Button Press/Release

Address

Decription

1st

1

Main Backlight D1-D4

2nd

2

Sub Backlight D5-D6

3rd

3

Low Backlight Current

4th, repeat

0

All Backlight D1-D6

LIGHT+DATA+FLASH

Reset. EN/SET is held logic low

Table 1: User Interface Functionality.

Schematic

1.0μF

C1

1.0μF

C2

2.2μF

C3

4.7μF

C4

D1

D2

D3

D4

D5

D6

LXCL-PWF1

D7

VOUT

LXCL-PWF1

D8

280K

R9

D3

1

D2

2

D1

3

AGND

4

CT

5

EN/SET

6

VIN

13

C1+

14

C1-

15

PGND

16

F4

17

F3

18

U1

AAT2830/31

RGB

0.1μF

C5

EN

DC+

J1

R9 = 280K for

30mA/channel backlight

B

G

R

Optional footprints for

auxiliary lighting LEDs

C7

100μF

optional 100μF

lab supply bypass

VIN

Figure 1: AAT2830/31 Section Schematic of Evaluation Board.