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參數(shù)資料
| 型號： | AAT2834 |
| 廠商： | Advanced Analogic Technologies, Inc. |
| 英文描述： | 240mA Total Display Solution for Portable Devices |
| 中文描述： | 二百四毫安全面顯示解決方案用于便攜式設(shè)備 |
| 文件頁數(shù)： | 1/20頁 |
| 文件大?。?/td> | 485K |
| 代理商： | AAT2834 |
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
2
Cwire (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
2
Cwire 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
2.2μF
C1
1μF
C2
1μF
IN
AAT2833/34
PGND
EN/SET
OUT
AS
2
Cwire
Serial Control
V
Single-cell Li+
C1+
C1- C2+
C2-
BL1
RGB LED
R
G B
AGND
R
280k
Ω
BSET
BL3 BL4
BL2
BL5 BL6
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AAT2834IBK-T1 | 制造商:ANALOGICTECH 制造商全稱:Advanced Analogic Technologies 功能描述:240mA Total Display Solution for Portable Devices |
| AAT2842 | 制造商:ANALOGICTECH 制造商全稱:Advanced Analogic Technologies 功能描述:High-Current Charge Pump with S2Cwire⑩ Control and Dual LDO for Backlight and Flash |
| AAT2842_07 | 制造商:ANALOGICTECH 制造商全稱:Advanced Analogic Technologies 功能描述:High-Current Charge Pump with S2Cwire⑩ Control and Dual LDO for Backlight and Flash |
| AAT2842IBJ-EE-T1 | 制造商:ANALOGICTECH 制造商全稱:Advanced Analogic Technologies 功能描述:High-Current Charge Pump with S2Cwire⑩ Control and Dual LDO for Backlight and Flash |
| AAT2842INJ-EE-T1 | 制造商:ANALOGICTECH 制造商全稱:Advanced Analogic Technologies 功能描述:High-Current Charge Pump with S2Cwire⑩ Control and Dual LDO for Backlight and Flash |
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