Skyworks Solutions, Inc.: Lighting Management IC: AAT2846: AAT2846INJ-EE-T1

Power Electronics Products from CDI

High Current Charge Pump with Dual LDO for Backlight and Flash Applications
Manufacturer: Skyworks Solutions, Inc.
Status: Standard
Data Sheet: AAT2846INJ-EE-T1 Data Sheet
RoHS Compliance: Skyworks Solutions, Inc., AAT2846INJ-EE-T1, Lighting Management IC, High Current Charge Pump with Dual LDO for Backlight and Flash Applications (Rohs Compliant), Component Distributors Inc. (CDI) Yes
# Backlight LEDs:
# Backlight Channels:
Backling Iout (max) per Channel:
30 mA
# Flash LED Channels:
Flash Iout (max) per Channel:
300 mA
# LDO Outputs:
Dropout Voltage:
0.15 V
LDO Iout:
200 mA
Vin Min:
2.7 V
Vin Max:
5.5 V
Also Available
Part FunctionPart NumberDescription
Evaluation Board AAT2846INJ-EE-DB1 Skyworks Solutions, Inc. Demo board for AAT2846INJ-EE-T1
The AAT2846 is a highly integrated charge pump with dual linear regulators optimized for systems powered from lithium-ion/polymer batteries. The charge pump provides power for both white LED backlight and flash. Six backlight LEDs can be driven at up to 30mA each, while up to two flash LEDs can be driven at up to 600mA total. Skyworks AS 2 Cwire™ (Advanced Simple Serial Control™) single-wire interface is used to enable, disable, and set the current to one of 32 levels for the backlight and one of 16 levels for the flash. An external resistor sets the maximum flash current. Backlight current matching is 1% for uniform display brightness, and flash current matching is 4% for uniform power dissipation. The AAT2846 offers two high-performance low-noise MicroPower™ low dropout (LDO) linear regulators. Both regulators use individual enable inputs and each will supply up to 200mA load current. LDO ground pin current is only 80μA, making the AAT2846 ideal for batteryoperated applications. The AAT2846 is equipped with built-in short-circuit and over-temperature protection. The soft start circuitry prevents excessive inrush current at start-up and mode transitions. The AAT2846 is available in a Pb-free TQFN44-28 package and operates over the -40°C to +85°C ambient temperature range.
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Package Format
DescriptionUnits Per FormatAvailable
(T/R) 3000 0