Lighting Controller. AAT3128 Datasheet

AAT3128 Controller. Datasheet pdf. Equivalent

AAT3128 Datasheet
Recommendation AAT3128 Datasheet
Part AAT3128
Description RGB LED Fashion Lighting Controller
Feature AAT3128; General Description The AAT3128 is a total solution controller for RGB LED fashion lighting. A simpl.
Manufacture Skyworks Solutions
Datasheet
Download AAT3128 Datasheet




Skyworks Solutions AAT3128
General Description
The AAT3128 is a total solution controller for RGB LED
fashion lighting. A simplified control scheme greatly reduc-
es design complexity and accelerates time to market.
The AAT3128 contains a high efficiency tri-mode charge
pump DC/DC converter with 1X, 1.5X and 2X modes for
color LED applications. Current source outputs drive two
individual RGB LEDs for color displays, fashion and mood
lighting. With a single-wire S2Cwire interface, an RGB
LED module is easily controlled to display four distinct
lighting mood effects.
Low external parts count (two 1µF flying capacitors and
two small bypass capacitors) and high conversion effi-
ciency make the AAT3128 ideally suited for small bat-
tery-powered portable applications.
The AAT3128 has a thermal management system to pro-
tect the device in the event of an output short circuit
condition. Built-in soft-start circuitry prevents excessive
inrush current during start-up. A low current shutdown
feature disconnects the load from the input source and
reduces quiescent current to less than 1µA.
The AAT3128 is available in a 14-pin TSOPJW package.
DATA SHEET
AAT3128
RGB LED Fashion Lighting Controller
Features
• 2.7V to 5.5V Input Voltage Range
• Compatible with Common Anode RGB LEDs
• Four S2Cwire Controlled Lighting Moods
• 0~60mA Programmable Current Source
• Low Noise Constant Frequency Operation
• No Inductors
• Small Application Circuit
• Regulated Output Current
• Integrated LED Control Switches
• Automatic Soft-Start
• Less than 1µA Shutdown Current
Applications
• Color Backlighting for Monochrome LCD Displays
• Color Display Lighting
• Fashion Lighting RGB LEDs
• Mobile Handsets
• MP3 Players
• PDAs
• Smartphones
Typical Application
VBATTERY
IN ISRC2
ISRC1
CP C1+
CIN
1µF
COUT
1µF
AAT3128
C1-
C2+
EN/SET
RSET
38.3kΩ
EN/SET
RSET
GND
C2-
DR
DG
DB
C1
1µF
RGB
RGB
C1
1µF RGB
LED 1
RGB
LED 2
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
202263A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • August 10, 2012
1



Skyworks Solutions AAT3128
DATA SHEET
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
DG
DR
DB
GND
IN
C2-
1
2
3
4
5
6
7
14 EN/SET
13 ISRC2
12 ISRC1
11 CP
10 C1+
9 C1-
8 C2+
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
2 202263A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • August 10, 2012



Skyworks Solutions AAT3128
DATA SHEET
AAT3128
RGB LED Fashion Lighting Controller
Absolute Maximum Ratings1
Symbol
VIN, VCP
VC1+, VC1-, VC2+, VC2-
VEN/SET, VRSET, VISRC1,
VISRC2, VDG, VDR, VDB
TJ
TLEAD
Description
IN, CP to GND
C1+, C1-, C2+, C2- to GND
EN/SET, RSET, ISRC1, ISRC2, DG, DR, DB to GND
Operating Junction Temperature Range
Maximum Soldering Temperature (at leads, 10 sec)
Value
-0.3 to 6
-0.3 to VCP + 0.3
-0.3 to VIN + 0.3
-40 to 150
300
Units
V
V
V
°C
°C
Thermal Characteristics2
Symbol
qJA
PD
Description
Maximum Thermal Resistance
Maximum Power Dissipation
Value
160
625
Units
°C/W
mW
1. Stresses above those listed in Absolute Maximum Ratings may cause permanent damage to the device. Functional operation at conditions other than the operating conditions
specified is not implied. Only one Absolute Maximum Rating should be applied at any one time.
2. Mounted on a FR4 board.
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
202263A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • August 10, 2012
3







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