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LT3467EDDB#TRM PDF预览

LT3467EDDB#TRM

更新时间: 2024-11-04 13:09:39
品牌 Logo 应用领域
凌特 - Linear 转换器软启动
页数 文件大小 规格书
16页 262K
描述
LT3467 - 1.1A Step-Up DC/DC Converter with Integrated Soft-Start; Package: DFN; Pins: 8; Temperature Range: -40°C to 85°C

LT3467EDDB#TRM 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, SOLCC8,.08,20
针数:8Reach Compliance Code:not_compliant
ECCN代码:EAR99HTS代码:8542.39.00.01
风险等级:5.08其他特性:HIGH OUTPUT VOLTAGE UPTO 40V
模拟集成电路 - 其他类型:SWITCHING REGULATOR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 V
JESD-30 代码:R-PDSO-N8JESD-609代码:e0
长度:3 mm湿度敏感等级:1
功能数量:1端子数量:8
最高工作温度:85 °C最低工作温度:
最大输出电流:2.5 A封装主体材料:PLASTIC/EPOXY
封装代码:HVSON封装等效代码:SOLCC8,.08,20
封装形状:RECTANGULAR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子类别:Switching Regulator or Controllers
表面贴装:YES切换器配置:BOOST
最大切换频率:1600 kHz技术:BIPOLAR
温度等级:OTHER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:2 mmBase Number Matches:1

LT3467EDDB#TRM 数据手册

 浏览型号LT3467EDDB#TRM的Datasheet PDF文件第2页浏览型号LT3467EDDB#TRM的Datasheet PDF文件第3页浏览型号LT3467EDDB#TRM的Datasheet PDF文件第4页浏览型号LT3467EDDB#TRM的Datasheet PDF文件第5页浏览型号LT3467EDDB#TRM的Datasheet PDF文件第6页浏览型号LT3467EDDB#TRM的Datasheet PDF文件第7页 
LT3467/LT3467A  
1.1A Step-Up DC/DC  
Converter with  
Integrated Soft-Start  
FEATURES  
DESCRIPTION  
The LT®3467/LT3467A switching regulators combine a  
42V, 1.1A switch with a soft-start function. Pin compatible  
n
1.3MHz Switching Frequency (LT3467)  
n
2.1MHz Switching Frequency (LT3467A)  
n
Low V  
Switch: 330mV at 1.1A  
with the LT1930, its low V  
bipolar switch enables the  
CESAT  
CESAT  
n
n
n
n
n
n
n
n
n
n
n
n
High Output Voltage: Up to 40V  
device to deliver high current outputs in a small footprint.  
The LT3467 switches at 1.3MHz, allowing the use of tiny,  
low cost and low height inductors and capacitors. The  
LT3467A switches at 2.1MHz, allowing the use of even  
smaller components. High inrush current at start-up is  
eliminated using the programmable soft-start function.  
A single external capacitor sets the current ramp rate. A  
constantfrequencycurrentmodePWMarchitectureresults  
in low, predictable output noise that is easy to filter.  
Wide Input Range: 2.4V to 16V  
Dedicated Soft-Start Pin  
5V at 540mA from 3.3V Input (LT3467)  
5V at 430mA from 3.3V Input (LT3467A)  
12V at 270mA from 5V Input (LT3467)  
12V at 260mA from 5V Input (LT3467A)  
Uses Small Surface Mount Components  
Low Shutdown Current: <1μA  
Pin-for-Pin Compatible with the LT1930 and LT1613  
The high voltage switch on the LT3467/LT3467A is rated  
at 42V, making the devices ideal for boost converters up  
to 40V as well as SEPIC and flyback designs. The LT3467  
can generate 5V at up to 540mA from a 3.3V supply or  
5V at 450mA from four alkaline cells in a SEPIC design.  
The LT3467A can generate 5V at up to 430mA from a 3.3V  
supply or 15V at 135mA from a 3.3V supply. The LT3467/  
LT3467Aareavailableinalowprofile(1mm)6-leadSOT-23  
package and tiny 3mm × 2mm DFN package.  
Low Profile (1mm) ThinSOT Package  
Low Profile (0.75mm) 8-Lead (3mm × 2mm)  
DFN Package  
APPLICATIONS  
n
Digital Cameras  
n
White LED Power Supplies  
n
Cellular Phones  
n
Medical Diagnostic Equipment  
L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.  
ThinSOT is a trademark of Linear Technology Corporation.  
All other trademarks are the property of their respective owners.  
n
Local 5V or 12V Supplies  
n
TFT-LCD Bias Supplies  
n
xDSL Power Supplies  
TYPICAL APPLICATION  
Efficiency  
95  
Single Li-Ion Cell to 5V Boost Converter  
90  
V
= 4.2V  
2.7μH  
IN  
V
85  
80  
75  
70  
65  
60  
55  
50  
IN  
V
OUT  
5V  
2.6V TO  
4.2V  
V
= 3.3V  
IN  
V
= 2.6V  
765mA AT V = 4.2V,  
IN  
IN  
IN  
IN  
4.7μF  
402k  
133k  
540mA AT V = 3.3V,  
V
SW  
IN  
360mA AT V = 2.6V  
SHDN  
OFF ON  
3.3pF  
LT3467  
SS  
FB  
GND  
15μF  
0.047μF  
3467 TA01a  
800  
900  
100  
300 400 500  
700  
200  
600  
I
(mA)  
OUT  
3467 TA01b  
3467afd  
1

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