PRODUCT DATASHEET
AAT3128
ChargePump
TM
Pin Descriptions
Pin #
1
2
3
4
5
6
7
8
9
10
11
12
13
14
RGB LED Fashion Lighting Controller
Symbol
RSET
DG
DR
DB
GND
IN
C2-
C2+
C1-
C1+
CP
ISRC1
ISRC2
EN/SET
Function
Current Setting Resistor. Connect a resistor from RSET to GND to program the maximum LED current
Green LED On/Off Switch. DG turns on/off the green LED. Connect the green LED cathode to DG.
Red LED On/Off Switch. DR turns on/off the red LED. Connect the red LED cathode to DR.
Blue LED On/Off Switch. DB turns on/off the blue LED. Connect the blue LED cathode to DB.
Ground.
Power Input. Connect the input power voltage source to IN. Connect a 1μF ceramic capacitor from IN to GND.
Flying Capacitor 2 Negative Node. Connect a 1μF ceramic capacitor between C2+ and C2-.
Flying Capacitor 2 Positive Node. Connect a 1μF ceramic capacitor between C2+ and C2-.
Flying Capacitor 1 Negative Node. Connect a 1μF ceramic capacitor between C1+ and C1-.
Flying Capacitor 1 Positive Node. Connect a 1μF ceramic capacitor between C1+ and C1-.
Charge Pump Output. CP is the output voltage stage of the internal charge pump. Bypass CP to GND with a
1μF ceramic capacitor.
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.
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.
Enable/Set Input. ENSET turns on/off the AAT3128 and is the S
2
Cwire serial interface input to control the
LED color and brightness mood function. This node uses active high logic.
Pin Configuration
TSOPJW-14
(Top View)
RSET
DG
DR
DB
GND
IN
C2-
1
2
3
4
5
6
7
14
13
12
11
10
9
8
EN/SET
ISRC2
ISRC1
CP
C1+
C1-
C2+
2
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3128.2008.02.1.1
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