AAT3128

RGB LED Fashion Lighting Controller

PRODUCT DATASHEET

2

3128.2008.02.1.1

www .analogictech.com

AAT3128

RGB LED Fashion Lighting Controller

PRODUCT DATASHEET

2

3128.2008.02.1.1

www .analogictech.com

Pin Descriptions

Pin #

Symbol Function

1

RSET

Current Setting Resistor. Connect a resistor from RSET to GND to program the maximum LED current

2

DG

Green LED On/Off Switch. DG turns on/off the green LED. Connect the green LED cathode to DG.

3

DR

Red LED On/Off Switch. DR turns on/off the red LED. Connect the red LED cathode to DR.

4

DB

Blue LED On/Off Switch. DB turns on/off the blue LED. Connect the blue LED cathode to DB.

5

GND

Ground.

6IN

Power Input. Connect the input power voltage source to IN. Connect a 1μF ceramic capacitor from IN to GND.

7

C2-

Flying Capacitor 2 Negative Node. Connect a 1μF ceramic capacitor between C2+ and C2-.

8

C2+

Flying Capacitor 2 Positive Node. Connect a 1μF ceramic capacitor between C2+ and C2-.

9

C1-

Flying Capacitor 1 Negative Node. Connect a 1μF ceramic capacitor between C1+ and C1-.

10

C1+

Flying Capacitor 1 Positive Node. Connect a 1μF ceramic capacitor between C1+ and C1-.

11

CP

Charge Pump Output. CP is the output voltage stage of the internal charge pump. Bypass CP to GND with a

1μF ceramic capacitor.

12

ISRC1

LED Current Source 1. ISRC1 controls the current through the LEDs connected to it. Connect the RGB LED

anode or LED array anodes to ISRC1.

13

ISRC2

LED Current Source 2. ISRC2 controls the current through the LEDs connected to it. Connect the RGB LED

anode or LED array anodes to ISRC2.

14

EN/SET

LED color and brightness mood function. This node uses active high logic.

Pin Configuration

TSOPJW-14

(Top View)

1

2

3

4

5

6

14

13

12

11

10

9

RSET

DG

DR

DB

GND

IN

EN/SET

ISRC2

ISRC1

CP

C1+

C1-

7

8

C2-

C2+