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LTC3525L-3.3 PDF预览

LTC3525L-3.3

更新时间： 2024-01-31 08:50:35
品牌 Logo 应用领域
Linear Systems 转换器
页数 文件大小 规格书
24页 244K
描述
Ultralow Voltage Step-Up Converter and Power Manager

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LTC3525L-3.3 数据手册

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LTC3108-1  
Ultralow Voltage Step-Up  
Converter and Power Manager  
FEATURES  
DESCRIPTION  
TheLTC®3108-1isahighlyintegratedDC/DCconverterideal  
forharvestingandmanagingsurplusenergyfromextremely  
low input voltage sources such as TEGs (thermoelectric  
generators),thermopilesandsmallsolarcells.Thestep-up  
topology operates from input voltages as low as 20mV.  
n
Operates from Inputs of 20mV  
n
Complete Energy Harvesting Power  
Management System  
- Selectable V  
of 2.5V, 3V, 3.7V or 4.5V  
OUT  
- LDO: 2.2V at 3mA  
- Logic Controlled Output  
- Reserve Energy Output  
Power Good Indicator  
Uses Compact Step-Up Transformers  
Small 12-Lead (3mm × 4mm) DFN or 16-Lead  
SSOP Packages  
Usingasmallstep-uptransformer,theLTC3108-1provides  
acompletepowermanagementsolutionforwirelesssens-  
inganddataacquisition. The2.2VLDOpowersanexternal  
microprocessor, while the main output is programmed to  
one of four fixed voltages to power a wireless transmitter  
orsensors.Thepowergoodindicatorsignalsthatthemain  
outputvoltageiswithinregulation.Asecondoutputcanbe  
enabled by the host. A storage capacitor provides power  
when the input voltage source is unavailable. Extremely  
low quiescent current and high efficiency design ensure  
the fastest possible charge times of the output reservoir  
capacitor. The LTC3108-1 is functionally equivalent to the  
n
n
n
APPLICATIONS  
n
Remote Sensors and Radio Power  
n
Surplus Heat Energy Harvesting  
n
HVAC Systems  
n
Industrial Wireless Sensing  
n
Automatic Metering  
LTC3108 except for its unique fixed V  
options.  
OUT  
n
Building Automation  
The LTC3108-1 is available in a small, thermally enhanced  
12-lead (3mm × 4mm) DFN package and a 16-lead SSOP  
package.  
n
Predictive Maintenance  
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear  
Technology Corporation. All other trademarks are the property of their respective owners.  
TYPICAL APPLICATION  
Wireless Remote Sensor Application  
Powered From a Peltier Cell  
1nF  
VOUT Charge Time  
1:100  
5.25V  
1000  
C1  
VSTORE  
V
C
= 3V  
= 470μF  
OUT  
OUT  
+
+
+
0.1F  
6.3V  
THERMOELECTRIC  
GENERATOR  
LTC3108-1  
220μF  
330pF  
100  
10  
1
V
OUT2  
C2  
PGOOD  
2.2V  
PGD  
μP  
20mV TO 500mV  
VLDO  
SW  
2.2μF  
SENSORS  
RF LINK  
3V  
VS2  
V
OUT  
+
470μF  
1:100 Ratio  
1:50 Ratio  
1:20 Ratio  
VS1  
V
OUT2_EN  
GND  
31081 TA01a  
VAUX  
0
100 150 200 250 300 350 400  
0
50  
V
(mV)  
1μF  
IN  
31081 TA01b  
31081fa  
1
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