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LT3471 PDF预览

LT3471

更新时间: 2024-01-12 11:08:10
品牌 Logo 应用领域
凌特 - Linear /
页数 文件大小 规格书
16页 266K
描述
Dual 1.3A, 1.2MHz Boost/Inverter in 3mm ???? 3mm DFN

LT3471 技术参数

是否Rohs认证: 符合生命周期:Transferred
零件包装代码:DFN包装说明:HVSON, SOLCC10,.12,20
针数:10Reach Compliance Code:compliant
ECCN代码:EAR99HTS代码:8542.39.00.01
风险等级:2.91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:16 V最小输入电压:2.4 V
标称输入电压:3 VJESD-30 代码:S-PDSO-N10
JESD-609代码:e3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:2.6 A
封装主体材料:PLASTIC/EPOXY封装代码:HVSON
封装等效代码:SOLCC10,.12,20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):260
认证状态:Not Qualified座面最大高度:0.8 mm
子类别:Switching Regulator or Controllers表面贴装:YES
切换器配置:BOOST最大切换频率:1400 kHz
温度等级:COMMERCIAL端子面层:Matte Tin (Sn)
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:30
宽度:3 mmBase Number Matches:1

LT3471 数据手册

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LT3471  
Dual 1.3A, 1.2MHz  
Boost/Inverter in  
3mm × 3mm DFN  
U
FEATURES  
DESCRIPTIO  
1.2MHz Switching Frequency  
The LT®3471 dual switching regulator combines two 42V,  
1.3A switches with error amplifiers that can sense to  
ground providing boost and inverting capability. The low  
Low VCESAT Switches: 330mV at 1.3A  
High Output Voltage: Up to 40V  
Wide Input Range: 2.4V to 16V  
VCESAT bipolar switches enable the device to deliver high  
Inverting Capability  
current outputs in a small footprint. The LT3471 switches  
at 1.2MHz, allowing the use of tiny, low cost and low  
profile inductors and capacitors. High inrush current at  
start-up is eliminated using the programmable soft-start  
function, where an external RC sets the current ramp rate.  
A constant frequency current mode PWM architecture  
resultsinlow,predictableoutputnoisethatiseasytofilter.  
5V at 630mA from 3.3V Input  
12V at 320mA from 5V Input  
–12V at 200mA from 5V Input  
Uses Tiny Surface Mount Components  
Low Shutdown Current: <1µA  
Low Profile (0.75mm) 10-Lead 3mm × 3mm  
DFN Package  
The LT3471 switches are rated at 42V, making the device  
idealforboostconvertersupto±40VaswellasSEPICand  
flyback designs. Each channel can generate 5V at up to  
630mA from a 3.3V supply, or 5V at 510mA from four  
alkaline cells in a SEPIC design. The device can be config-  
ured as two boosts, a boost and inverter or two inverters.  
U
APPLICATIO S  
Organic LED Power Supply  
Digital Cameras  
White LED Power Supply  
Cellular Phones  
Medical Diagnostic Equipment  
Local ±5V or ±12V Supply  
TFT-LCD Bias Supply  
xDSL Power Supply  
The LT3471 is available in a low profile (0.75mm) 10-lead  
3mm × 3mm DFN package.  
, LTC and LT are registered trademarks of Linear Technology Corporation.  
U
TYPICAL APPLICATIO  
OLED Driver  
2.2µH  
V
OLED Driver Efficiency  
OUT1  
V
IN  
7V  
3.3V  
95  
350mA  
90.9k  
15k  
4.7µF  
CONTROL 1  
90  
SW1  
4.7k  
V
= 7V  
OUT1  
SHDN/SS1  
FB1N  
FB1P  
85  
80  
75  
70  
65  
60  
55  
50  
0.33µF  
V
V
= –7V  
REF  
OUT1  
0.1µF  
V
V
LT3471  
IN  
IN  
10µF  
4.7k  
15k  
FB2N  
FB2P  
CONTROL 2  
SHDN/SS2  
GND  
SW2  
0.33µF  
75pF  
105k  
1µF  
10µH  
15µH  
V
–7V  
250mA  
OUT2  
V
IN  
200  
0
100  
300  
400  
10µF  
I
(mA)  
OUT  
3471 TA01b  
3471 TA01  
3471f  
1

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