Skyworks Solutions, Inc.: Lighting Management IC: AAT2803: AAT2803ISK-4.5-T1

Power Electronics Products from CDI

AAT2803ISK-4.5-T1
Six-Channel White LED Backlight Charge Pump with Flash
Manufacturer: Skyworks Solutions, Inc.
Status: Standard
Data Sheet: AAT2803ISK-4.5-T1 Data Sheet
RoHS Compliance: Skyworks Solutions, Inc., AAT2803ISK-4.5-T1, Lighting Management IC, Six-Channel White LED Backlight Charge Pump with Flash (Rohs Compliant), Component Distributors Inc. (CDI) Yes
Specifications
# Backlight LEDs:
6
# Backlight Channels:
6
Backling Iout (max) per Channel:
30 mA
# Flash LED Channels:
1
Flash Iout (max) per Channel:
300 mA
Movie Mode Iout (max) per Channel:
120 mA
Vin Min:
2.7 V
Vin Max:
5.5 V
Interface:
AS2Cwire™
Package:
QFN44-24
Also Available
Part FunctionPart NumberDescription
Evaluation Board AAT2803ISK-4.5-DB1 Skyworks Solutions, Inc. Demo board for AAT2803ISK-4.5-T1
The AAT2803 is a dual charge pump designed to support both white LED backlight and flash applications for systems operating with lithium-ion/polymer batteries. The backlight charge pump is capable of driving up to six LEDs at a total of 180mA. The current sinks may be operated in group or in parallel for driving higher current LEDs. To maximize power efficiency, the charge pump operates in 1X, 1.5X, or 2X mode, where the mode of operation is automatically selected by comparing the forward voltage of each LED with the input voltage. AnalogicTech's AS²Cwire™ (Advanced Simple Serial Control™) serial digital input is used to enable, disable, and set current for each LED with a 16-level logarithmic scale plus four low-current settings down to 50µA for optimized efficiency, with a low housekeeping current of only 50µA. The flash charge pump is a charge pump doubler with a regulated output voltage. It is designed to deliver 120mA of continuous current and up to 300mA of pulsed current. It has an independent enable pin for improved power savings. The AAT2803 is equipped with built-in short-circuit protection and auto-disable for load short-circuit condition. Built-in soft-start circuitry prevents excessive inrush current during start-up. A low-current shutdown feature disconnects the load from V IN and reduces quiescent current to less than 1µA. The AAT2803 is available in a Pb-free, space-saving, thermally enhanced 24-pin 4x4mm QFN package and is rated over the -40°C to +85°C temperature range.
Pricing
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Availability
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Package Format
DescriptionUnits Per FormatAvailable
(T/R) 1500 0