AAT3128_08 Datasheet, PDF (2/12 Pages) Advanced Analogic Technologies – RGB LED Fashion Lighting Controller

ChargePump^TM
PRODUCT DATASHEET
AAT3128
RGB LED Fashion Lighting Controller
Pin Descriptions
Pin #
1
2
3
4
5
6
7
8
9
10
11
12
13
14
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 S²Cwire 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 ¹
DG ²
DR ³
DB ⁴
GND ⁵
IN ⁶
C2- ⁷
14 _EN/SET
13 _ISRC2
12 _ISRC1
11 _CP
10 _C1+
9 _C1-
8 _C2+
2
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3128.2008.02.1.1