Skyworks Solutions, Inc.: Lighting Management IC: AAT2842: AAT2842INJ-EE-T1

Power Electronics Products from CDI

AAT2842INJ-EE-T1
High Current Charge Pump with S2CwireTM Control and Dual LDO for Backlight and Flash
Manufacturer: Skyworks Solutions, Inc.
Status: Standard
Data Sheet: AAT2842INJ-EE-T1 Data Sheet
RoHS Compliance: Skyworks Solutions, Inc., AAT2842INJ-EE-T1, Lighting Management IC, High Current Charge Pump with S2CwireTM Control and Dual LDO for Backlight and Flash (Rohs Compliant), Component Distributors Inc. (CDI) Yes
Specifications
# Backlight LEDs:
4
# Backlight Channels:
4
Backling Iout (max) per Channel:
30 mA
# Flash LED Channels:
4
Flash Iout (max) per Channel:
150 mA
Movie Mode Iout (max) per Channel:
48 mA
# LDO Outputs:
2
Dropout Voltage:
0.15 V
LDO Iout:
200 mA
Vin Min:
2.7 V
Vin Max:
5.5 V
Interface:
S2Cwire™
Package:
TQFN44-28-0.4
Also Available
Part FunctionPart NumberDescription
Evaluation Board AAT2842INJ-EE-DB1 Skyworks Solutions, Inc. Demo board for AAT2842INJ-EE-T1
The AAT2842 is a highly integrated charge pump with dual linear regulators optimized for systems operating with lithium-ion/polymer batteries. The charge pump provides power for both white LED backlight/keypad and flash. Up to four backlight LEDs can be driven at up to 30mA each and keypad LEDs can be driven using lower currents set by the S²Cwire interface. In addition, up to four flash LEDs can be driven with up to 600mA total. Two separate S²Cwire™ (Simple Serial Control™) serial digital interfaces are used to enable, disable, and set the current to one of 16 levels for both backlight and flash LEDs. Backlight/keypad and flash current settings are also controlled through external resistors for increased versatility with reduced accuracy and matching. Backlight/keypad current matching is 1% for uniform display brightness, and flash current matching is 4% for uniform power dissipation. An integral flash timer set by an external capacitor protects the flash LED should a fault occur. The AAT2842 offers two high-performance MicroPower™ low dropout (LDO) linear regulators. A single enable input controls both regulators and each supplies up to 200mA to the load. Both LDOs consume only 85µA quiescent current, making them ideal for battery-operated applications. The AAT2842 is equipped with built-in short-circuit and over-temperature protection. The charge pump soft-start circuitry prevents excessive inrush current at start-up. The product is available in a Pb-free, space-saving TQFN44-28 package and operates over the -40°C to +85°C ambient temperature range.
Pricing
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Availability
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Package Format
DescriptionUnits Per FormatAvailable
(T/R) 1500 0