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LT3470IDDB PDF预览

LT3470IDDB

更新时间: 2024-11-30 12:05:03
品牌 Logo 应用领域
凌特 - Linear 调节器二极管开关光电二极管
页数 文件大小 规格书
20页 240K
描述
Micropower Buck Regulator with Integrated Boost and Catch Diodes

LT3470IDDB 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:5.07其他特性:ALSO OPERATES IN ADJUSTABLE MODE FROM 1.25 V TO 16 V
模拟集成电路 - 其他类型:SWITCHING REGULATOR控制模式:CURRENT-MODE
控制技术:HYSTERETIC CURRENT MODE最大输入电压:40 V
最小输入电压:4 V标称输入电压:10 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:125 °C最低工作温度:-40 °C
最大输出电流:0.2 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:BUCK
技术:BIPOLAR温度等级:AUTOMOTIVE
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 mm
Base Number Matches:1

LT3470IDDB 数据手册

 浏览型号LT3470IDDB的Datasheet PDF文件第2页浏览型号LT3470IDDB的Datasheet PDF文件第3页浏览型号LT3470IDDB的Datasheet PDF文件第4页浏览型号LT3470IDDB的Datasheet PDF文件第5页浏览型号LT3470IDDB的Datasheet PDF文件第6页浏览型号LT3470IDDB的Datasheet PDF文件第7页 
LT3470  
Micropower Buck Regulator  
with Integrated Boost and  
Catch Diodes  
FeaTures  
DescripTion  
The LT®3470 is a micropower step-down DC/DC con-  
verter that integrates a 300mA power switch, catch diode  
and boost diode into low profile 3mm × 2mm DD and  
ThinSOT™ packages. The LT3470 combines Burst Mode  
and continuous operation to allow the use of tiny induc-  
tor and capacitors while providing a low ripple output to  
loads of up to 200mA.  
n
Low Quiescent Current: 26µA at 12V to 3.3V  
IN  
OUT  
n
Integrated Boost and Catch Diodes  
n
Input Range: 4V to 40V  
n
Low Output Ripple: <10mV  
n
<1µA in Shutdown Mode  
n
Output Voltage: 1.25V to 16V  
n
200mA Output Current  
n
Hysteretic Mode Control  
With its wide input range of 4V to 40V, the LT3470 can  
regulateawidevarietyofpowersources,from2-cellLi-Ion  
batteries to unregulated wall transformers and lead-acid  
batteries. Quiescent current in regulation is just 26µA in  
a typical application while a zero current shutdown mode  
disconnects the load from the input source, simplifying  
power management in battery-powered systems. Fast  
currentlimitingandhystereticcontrolprotectstheLT3470  
and external components against shorted outputs, even  
at 40V input.  
– Low Ripple Burst Mode® Operation at Light Loads  
– Continuous Operation at Higher Loads  
2
n
n
Solution Size as Small as 50mm  
Low Profile (0.75mm) 3mm × 2mm Thermally  
Enhanced 8-Lead DD and 1mm ThinSOT Packages  
applicaTions  
n
Automotive Battery Regulation  
n
Power for Portable Products  
L, LT, LTC, LTM, Linear Technology, the Linear logo and Burst Mode are registered trademarks  
and ThinSOT is a trademark of Linear Technology Corporation. All other trademarks are the  
property of their respective owners.  
n
Distributed Supply Regulation  
n
Industrial Supplies  
n
Wall Transformer Regulation  
Typical applicaTion  
Efficiency and Power Loss vs Load Current  
90  
80  
70  
60  
50  
40  
30  
20  
10  
1000  
100  
10  
V
IN  
V
= 12V  
IN  
7V TO 40V  
0.22µF  
33µH  
V
BOOST  
IN  
LT3470  
SHDN  
V
OUT  
5V  
OFF ON  
2.2µF  
SW  
200mA  
BIAS  
604k  
1%  
22pF  
FB  
22µF  
GND  
200k  
1%  
1
3470 TA01a  
0.1  
0.1  
1
10  
100  
LOAD CURRENT (mA)  
3470 TA02  
3470fd  
1

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