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Moteur de recherche de fiches techniques de composants électroniques |
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Moteur de recherche de fiches techniques de composants électroniques |
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AAT2833 Fiches technique(PDF) 1 Page - Advanced Analogic Technologies |
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AAT2833 Fiches technique(HTML) 1 Page - Advanced Analogic Technologies |
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1 / 20 page  AAT2833/34 240mA Total Display Solution for Portable Devices 2833.2007.09.1.0 1 ChargePump™ General Description The AAT2833/34 is a total solution IC for portable display applications. Based on a tri-mode charge pump power engine, it is capable of delivering 240mA of output current for white LED (WLED) backlight and RGB applications. The high conver- sion efficiency and high level of integration make the AAT2833/34 an optimal solution for battery life and size-critical applications. AnalogicTech's AS 2Cwire™ (Advanced Simple Serial Control™) serial digital interface is used to enable, disable, and set current levels for all of the light emitting diodes (LEDs). Each backlight chan- nel can be programmed to 16 levels of current, from a recommended maximum of 30mA programmed by the R BSET resistor. The RGB module can be adjust- ed to 8 levels of current, up to a recommended max- imum of 60mA. The RGB module is programmable with up to 4096 (AAT2833) or 64 (AAT2834) color/intensity (brightness) combinations. The AAT2833/34 is offered in a Pb-free, thermally enhanced 24-pin 4x4x0.75mm TQFN package. Applications • Digital Still Cameras • LCD Display Modules • MP3 Players • White LED Drivers • Wireless Handsets Features • Input Supply Voltage Range: 2.7V to 5.5V • Tri-Mode (1X/1.5X/2X) Charge Pump: — Delivers up to 240mA of Output Current — Switching Frequency: Up to 2MHz • Total Display Solution for RGB and Backlight Applications — 6-Channel Backlight WLED Backlight • User-Programmable Full-Scale Current, up to 30mA — 3-Channel RGB • User-Programmable Full-Scale Output Current/Duty Cycle • AAT2833: 4096 Color/Intensity Combinations • AAT2834: 64 Color/Intensity Combinations • Single-Wire AS 2Cwire Serial Interface for Configuration/Control — Eleven Addressable Registers — Fast, 1MHz Serial Interface • True Load Disconnect in Shutdown, I IN < 1µA • Built-in Thermal Protection • Built-in Auto-Disable for Open LED Condition • Automatic Soft-Start Minimizes Inrush Current • Available in 4x4x0.75mm TQFN44-24 Package Typical Application C IN 2.2μF C OUT 2.2μF C1 1μF C2 1μF IN AAT2833/34 PGND EN/SET OUT AS2Cwire Serial Control V BATTERY Single-cell Li+ C1+ C1- C2+ C2- BL1 RGB LED RG B AGND R BSET 280k Ω BSET BL3 BL4 BL2 BL5 BL 6 |
Numéro de pièce similaire - AAT2833 |
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Description similaire - AAT2833 |
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