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LT3470HTS8

更新时间： 2024-01-03 09:13:33
品牌 Logo 应用领域
凌特 - Linear 稳压器开关式稳压器或控制器调节器电源电路二极管开关式控制器光电二极管
页数 文件大小 规格书
20页 240K
描述
Micropower Buck Regulator with Integrated Boost and Catch Diodes

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中文翻译

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LT3470HTS8 技术参数

是否无铅： 含铅是否Rohs认证： 符合
生命周期：Active包装说明：VSSOP,
针数：8Reach Compliance Code：compliant
风险等级：5.08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-G8JESD-609代码：e3
长度：2.9 mm湿度敏感等级：1
功能数量：1端子数量：8
最高工作温度：150 °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：VSSOP封装形状：RECTANGULAR
封装形式：SMALL OUTLINE, VERY THIN PROFILE, SHRINK PITCH峰值回流温度（摄氏度）：260
认证状态：Not Qualified座面最大高度：1 mm
表面贴装：YES切换器配置：BUCK
温度等级：AUTOMOTIVE端子面层：MATTE TIN
端子形式：GULL WING端子节距：0.65 mm
端子位置：DUAL处于峰值回流温度下的最长时间：30
宽度：1.6 mmBase Number Matches：1

LT3470HTS8 数据手册

 浏览型号LT3470HTS8的Datasheet PDF文件第2页浏览型号LT3470HTS8的Datasheet PDF文件第3页浏览型号LT3470HTS8的Datasheet PDF文件第4页浏览型号LT3470HTS8的Datasheet PDF文件第5页浏览型号LT3470HTS8的Datasheet PDF文件第6页浏览型号LT3470HTS8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
1234567...20

中文翻译

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