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LT3470AEDDB#TRPBF PDF预览

LT3470AEDDB#TRPBF

更新时间: 2024-11-29 21:16:03
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 208K
描述
LT3470A - Micropower Buck Regulator with Integrated Boost and Catch Diodes; Package: DFN; Pins: 8; Temperature Range: -40°C to 85°C

LT3470AEDDB#TRPBF 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, SOLCC8,.08,20
针数:8Reach Compliance Code:compliant
ECCN代码:EAR99HTS代码:8542.39.00.01
风险等级:5.14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:e3
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:0.56 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):250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:OTHER
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:NOT SPECIFIED宽度:2 mm
Base Number Matches:1

LT3470AEDDB#TRPBF 数据手册

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LT3470A  
Micropower Buck Regulator  
with Integrated Boost and  
Catch Diodes  
FEATURES  
DESCRIPTION  
The LT®3470A is a micropower step-down DC/DC con-  
verter that integrates a 440mA power switch, catch diode  
and boost diode into low profile 2mm × 3mm DFN  
package. The LT3470A combines Burst Mode and  
continuous operation to allow the use of tiny inductor  
and capacitors while providing a low ripple output to  
loads of up to 250mA.  
n
Low Quiescent Current: 35μA at 12V to 3.3V  
IN  
OUT  
n
Integrated Boost and Catch Diodes  
n
Input Range: 4V to 40V  
n
3.3V at 250mA from 4V to 40V Input  
n
5V at 250mA from 5.7V to 40V Input  
n
Low Output Ripple: <10mV  
n
<1μA in Shutdown Mode  
n
Output Voltage: 1.25V to 16V  
With its wide input range of 4V to 40V, the LT3470A can  
regulateawidevarietyofpowersources,from2-cellLi-Ion  
batteries to unregulated wall transformers and lead-acid  
batteries. Quiescent current in regulation is just 35μA in  
a typical application while a zero current shutdown mode  
disconnects the load from the input source, simplifying  
powermanagementinbattery-poweredsystems.Fastcur-  
rent limiting and hysteretic control protects the LT3470A  
and external components against shorted outputs, even  
at 40V input. The LT3470A has higher output current and  
improved start-up and dropout performance compared  
to the LT3470.  
n
Hysteretic Mode Control  
– 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) 2mm × 3mm Thermally  
Enhanced 8-Lead DFN Package  
APPLICATIONS  
n
Automotive Battery Regulation  
n
Power for Portable Products  
n
Distributed Supply Regulation  
L, LT, LTC, LTM, Linear Technology, the Linear logo and Burst Mode are registered trademarks  
of Linear Technology Corporation. All other trademarks are the property of their respective  
owners.  
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
= 12V  
IN  
V
IN  
5.7V TO 40V  
0.22μF  
33μH  
V
BOOST  
IN  
LT3470A  
SHDN  
V
OUT  
5V  
OFF ON  
2.2μF  
SW  
250mA  
BIAS  
604k  
1%  
22pF  
FB  
22μF  
GND  
200k  
1%  
1
3470a TA01a  
0.1  
0.1  
1
10  
100  
300  
LOAD CURRENT (mA)  
3470a TA01b  
3470afb  
1

LT3470AEDDB#TRPBF 替代型号

型号 品牌 替代类型 描述 数据表
LT3470AIDDB#TRPBF Linear

完全替代

LT3470A - Micropower Buck Regulator with Integrated Boost and Catch Diodes; Package: DFN;
LT3470AEDDB#TRMPBF Linear

完全替代

LT3470A - Micropower Buck Regulator with Integrated Boost and Catch Diodes; Package: DFN;
LT3470AIDDB#TRMPBF Linear

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LT3470A - Micropower Buck Regulator with Integrated Boost and Catch Diodes; Package: DFN;

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