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AAT3155ITP-T1 PDF预览

AAT3155ITP-T1

更新时间: 2024-01-01 22:58:00
品牌 Logo 应用领域
ANALOGICTECH 驱动程序和接口接口集成电路
页数 文件大小 规格书
11页 316K
描述
High Efficiency 1X/1.5X/2X Charge Pump For White LED Applications

AAT3155ITP-T1 技术参数

生命周期:Obsolete包装说明:SOJ,
Reach Compliance Code:unknownECCN代码:EAR99
HTS代码:8542.39.00.01风险等级:7.86
数据输入模式:SERIAL接口集成电路类型:LED DISPLAY DRIVER
JESD-30 代码:R-PDSO-J12长度:3 mm
复用显示功能:NO功能数量:1
区段数:4端子数量:12
最高工作温度:85 °C最低工作温度:-40 °C
封装主体材料:PLASTIC/EPOXY封装代码:SOJ
封装形状:RECTANGULAR封装形式:SMALL OUTLINE
座面最大高度:1.1 mm最大供电电压:5.5 V
最小供电电压:2.7 V标称供电电压:3.6 V
表面贴装:YES温度等级:INDUSTRIAL
端子形式:J BEND端子节距:0.5 mm
端子位置:DUAL宽度:2.4 mm
Base Number Matches:1

AAT3155ITP-T1 数据手册

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AAT3155  
High Efficiency 1X/1.5X/2X Charge Pump  
For White LED Applications  
ChargePump  
General Description  
Features  
The AAT3155 is a low noise, constant frequency  
charge pump DC/DC converter that uses a tri-  
mode load switch (1X), fractional (1.5X), and dou-  
bling (2X) conversion to maximize efficiency for  
white LED applications. The AAT3155 is capable of  
driving up to four channels of LEDs at 20mA per  
channel from a 2.7V to 5.5V input. The current  
sinks may be operated individually or in parallel for  
driving higher current LEDs. A low external parts  
count (two 1µF flying capacitors and two small 1µF  
capacitors at IN and OUTCP) make this part ideal-  
ly suited for small, battery-powered applications.  
VIN Range: 2.7V to 5.5V  
Fully Programmable Current with Single Wire  
— 16 Current Levels  
— Four Low Current Settings Down to 50µA  
Low IQ (50µA) for Low Current Mode  
Tri-Mode 1X, 1.5X, and 2X Charge Pump for  
Maximum Efficiency and VF Coverage  
Drives up to Four Channels of LEDs  
No Inductors, Low Noise Operation  
1MHz Constant Switching Frequency  
Small Application Circuit  
Built-In Thermal Protection  
Automatic Soft Start  
IQ <1µA in Shutdown  
2.85x3.0mm TSOPJW-12 Package  
AnalogicTech's S2Cwire(Simple Serial Control)  
serial digital input is used to enable, disable, and set  
current for each LED with 16 settings down to 50μA.  
The low-current mode supply current can be as low  
as 50μA to save power.  
Each output of the AAT3155 is equipped with built-  
in protection for output short-circuit and auto-dis-  
able for load short-circuit conditions. Built-in soft-  
start circuitry prevents excessive inrush current  
during start-up. A low-current shutdown feature dis-  
connects the load from the input and reduces qui-  
escent current to less than 1μA.  
Applications  
Color (RGB) Lighting  
Programmable Current Sinks  
White LED Backlighting  
White Photo Flash for Digital Still Cameras  
The AAT3155 is available in a Pb-free, space-sav-  
ing 2.85x3.0mm 12-pin TSOPJW package.  
Typical Application  
C1+  
C2+  
C1  
C2  
1µF  
1µF  
C2-  
C1-  
IN  
OUTCP  
2.7V to 5.5V  
CIN  
COUT  
1µF  
D1  
D2  
D3  
D4  
AAT3155  
1µF  
GND  
EN/SET  
D1  
D2  
D3  
D4  
EN/SET  
3155.2006.05.1.1  
1

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