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| 型号： | LTC3109EGN#PBF |
| 厂商： | LINEAR TECHNOLOGY CORP |
| 元件分类： | 稳压器 |
| 英文描述： | 0.026 A SWITCHING REGULATOR, PDSO20 |
| 封装： | 0.150 INCH, LEAD FREE, PLASTIC, SSOP-20 |
| 文件页数： | 5/24页 |
| 文件大小： | 329K |
| 代理商： | LTC3109EGN#PBF |
LTC3109
3109f
applicaTions inForMaTion
TEG LOAD MATCHING
The LTC3109 was designed to present an input resistance
(load) in the range of 2Ω to 10Ω, depending on input volt-
age,transformerturnsratioandtheC1AandC2Acapacitor
values (as shown in the Typical Performance curves). For
a given turns ratio, as the input voltage drops, the input
resistance increases. This feature allows the LTC3109 to
optimize power transfer from sources with a few Ohms
of source resistance, such as a typical TEG. Note that a
lower source resistance will always provide more output
current capability by providing a higher input voltage
under load.
UNIPOLAR APPLICATIONS
The LTC3109 can also be configured to operate from two
independent unipolar voltage sources, such as two TEGs
in different locations. In this configuration, energy can be
harvestedfromeitherorbothsourcessimultaneously.See
the Typical Applications for an example.
The LTC3109 can also be configured to operate from a
single unipolar source, using a single step-up transformer,
by ganging its VIN and SW pins together. In this manner,
it can extract the most energy from very low resistance
sources. See Figure 3 for an example of this configuration,
along with the performance curves.
PELTIER CELL (TEG) SUPPLIERS
Peltiercellsareavailableinawiderangeofsizesandpower
capabilities, from less than 10mm square to over 50mm
square. They are typically 2mm to 5mm in height. A list
of some Peltier cell manufacturers is given in Table 3 and
some recommended part numbers in Table 4.
COMPONENT SELECTION
Step-Up Transformer
The turns ratio of the step-up transformers will determine
how low the input voltage can be for the converter to start.
Due to the auto-polarity architecture, two identical step-up
transformersshouldbeused,unlessthetemperaturedrop
across the TEG is significantly different in one polarity, in
which case the ratios may be different.
Table 3. Peltier Cell Manufacturers
CUI Inc
www.cui.com
Ferrotec
www.ferrotec.com/products/thermal/modules/
Fujitaka
www.fujitaka.com/pub/peltier/english/thermoelectric_power.html
Hi-Z Technology
www.hi-z.com
Kryotherm
www.kryotherm
Laird Technologies
www.lairdtech.com
Micropelt
www.micropelt.com
Nextreme
www.nextreme.com
TE Technology
www.tetech.com/Peltier-Thermoelectric-Cooler-Modules.html
Tellurex
www.tellurex.com/
Table 4. Recommended TEG Part Numbers by Size
MANUFACTURER
15mm
20mm
30mm
40mm
CUI Inc. (Distributor)
CP60133
CP60233
CP60333
CP85438
Ferrotec
9501/031/030 B
9501/071/040 B
9500/097/090 B
9500/127/100 B
Fujitaka
FPH13106NC
FPH17106NC
FPH17108AC
FPH112708AC
Kryotherm
TGM-127-1.0-0.8
LCB-127-1.4-1.15
Laird Technology
PT6.7.F2.3030.W6
PT8.12.F2.4040.TA.W6
Marlow Industries
RC3-8-01
RC6-6-01
RC12-8-01LS
Tellurex
C2-15-0405
C2-20-0409
C2-30-1505
C2-40-1509
TE Technology
TE-31-1.0-1.3
TE-31-1.4-1.15
TE-71-1.4-1.15
TE-127-1.4-1.05
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC3109EGN-TRPBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:Auto-Polarity, Ultralow Voltage Step-Up Converter and Power Manager |
| LTC3109EUF#PBF | 功能描述:IC BOOST CONVERTER PMU 20QFN RoHS:是 类别:集成电路 (IC) >> PMIC - 电源管理 - 专用 系列:- 标准包装:1 系列:- 应用:手持/移动设备 电流 - 电源:- 电源电压:3 V ~ 5.5 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:14-WFDFN 裸露焊盘 供应商设备封装:14-LLP-EP（4x4） 包装:Digi-Reel® 配用:LP3905SD-30EV-ND - BOARD EVALUATION LP3905SD-30 其它名称:LP3905SD-30DKR |
| LTC3109EUF#TRPBF | 功能描述:IC BOOST CONVERTER PMU 20QFN RoHS:是 类别:集成电路 (IC) >> PMIC - 电源管理 - 专用 系列:- 标准包装:1 系列:- 应用:手持/移动设备 电流 - 电源:- 电源电压:3 V ~ 5.5 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:14-WFDFN 裸露焊盘 供应商设备封装:14-LLP-EP（4x4） 包装:Digi-Reel® 配用:LP3905SD-30EV-ND - BOARD EVALUATION LP3905SD-30 其它名称:LP3905SD-30DKR |
| LTC3109EUF-PBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:Auto-Polarity, Ultralow Voltage Step-Up Converter and Power Manager |
| LTC3109EUF-TRPBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:Auto-Polarity, Ultralow Voltage Step-Up Converter and Power Manager |
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