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LT3466EDD#TR

更新时间： 2024-11-04 21:02:23
品牌 Logo 应用领域
凌特 - Linear 开关光电二极管
页数 文件大小 规格书
20页 482K
描述
LT3466 - Dual Full Function White LED Step-Up Converter with Built-In Schottky Diodes; Package: DFN; Pins: 10; Temperature Range: -40°C to 85°C

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中文翻译

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LT3466EDD#TR 技术参数

是否Rohs认证： 不符合生命周期：Transferred
零件包装代码：DFN包装说明：HVSON,
针数：10Reach Compliance Code：compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：5.14模拟集成电路 - 其他类型：DUAL SWITCHING CONTROLLER
控制模式：CURRENT-MODE控制技术：PULSE WIDTH MODULATION
最大输入电压：24 V最小输入电压：2.7 V
标称输入电压：3 VJESD-30 代码：S-PDSO-N10
JESD-609代码：e0长度：3 mm
湿度敏感等级：1功能数量：1
端子数量：10最高工作温度：70 °C
最低工作温度：最大输出电流：0.4 A
封装主体材料：PLASTIC/EPOXY封装代码：HVSON
封装形状：SQUARE封装形式：SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE
峰值回流温度（摄氏度）：235认证状态：Not Qualified
座面最大高度：0.8 mm表面贴装：YES
切换器配置：BOOST最大切换频率：2000 kHz
温度等级：COMMERCIAL端子面层：Tin/Lead (Sn/Pb)
端子形式：NO LEAD端子节距：0.5 mm
端子位置：DUAL处于峰值回流温度下的最长时间：20
宽度：3 mmBase Number Matches：1

LT3466EDD#TR 数据手册

 浏览型号LT3466EDD#TR的Datasheet PDF文件第2页浏览型号LT3466EDD#TR的Datasheet PDF文件第3页浏览型号LT3466EDD#TR的Datasheet PDF文件第4页浏览型号LT3466EDD#TR的Datasheet PDF文件第5页浏览型号LT3466EDD#TR的Datasheet PDF文件第6页浏览型号LT3466EDD#TR的Datasheet PDF文件第7页 
LT3466  
Dual Full Function White LED  
Step-Up Converter with  
Built-In Schottky Diodes  
U
FEATURES  
DESCRIPTIO  
LT®3466 is a dual full function step-up DC/DC converter  
specifically designed to drive up to 20 White LEDs (10 in  
series per converter) with a constant current. Series  
connection of the LEDs provides identical LED currents  
resulting in uniform brightness and eliminating the need  
for ballast resistors and expensive factory calibration.  
■
Drives Up to 20 White LEDs (10 in Series  
per Converter) from a 3.6V Supply  
■
Two Independent Step-Up Converters Capable of  
Driving Asymmetric LED Strings  
Independent Dimming and Shutdown Control  
of the Two LED Strings  
Internal Schottky Diodes  
Internal Soft-Start Eliminates Inrush Current  
Open LED Protection (39.5V Max VOUT  
Fixed Frequency Operation Up to 2MHz  
81% Efficiency Driving 16 White LEDs at 15mA  
(Eight per Driver) from a 3.6V Supply  
Wide Input Voltage Range: 2.7V to 24V  
Available in 10-Pin DFN and 16-Pin Thermally  
Enhanced TSSOP Packages  
■
■
The two independent converters are capable of driving  
asymmetric LED strings. The dimming of the two LED  
strings can also be controlled independently. The LT3466  
is ideal for providing backlight for main and sub-displays  
in cell phones and other handheld devices.  
■
■
)
■
■
■
■
The LT3466 operating frequency can be set with an  
external resistor over a 200kHz to 2MHz range. A low  
200mV feedback voltage minimizes power loss in the  
current setting resistor for better efficiency. Additional  
features include output voltage limiting when LEDs are  
disconnected and internal soft-start.  
U
APPLICATIO S  
■
Main/Sub Displays  
■
■
■
The LT3466 is available in the 10-pin (3mm × 3mm ×  
0.75mm) DFN and 16-pin thermally enhanced TSSOP  
packages.  
Digital Cameras, Sub-Notebook PCs  
PDAs, Handheld Computers  
Automotive  
, LTC and LT are registered trademarks of Linear Technology Corporation.  
U
TYPICAL APPLICATIO  
3V TO 5V  
Conversion Efficiency  
85  
1µF  
V
= 3.6V  
IN  
8/8 LEDs  
80  
75  
70  
65  
60  
55  
50  
L2  
L1  
47µH  
47µH  
SW1  
V
SW2  
IN  
LED1  
LED2  
V
V
OUT2  
OUT1  
2.2µF  
2.2µF  
LT3466  
FB1  
FB2  
R
T
CTRL1  
GND CTRL2  
63.4k  
OFF ON  
SHUTDOWN  
OFF ON  
SHUTDOWN  
10Ω  
10Ω  
0
5
10  
15  
20  
AND DIMMING  
CONTROL 1  
AND DIMMING  
CONTROL 2  
3466 F01a  
LED CURRENT (mA)  
3466 F01b  
Figure 1. Li-Ion Powered Driver for 8/8 White LEDs  
3466fa  
1
1234567...20

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