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參數(shù)資料
| 型號(hào)： | LTC3225EDDB-1#TRMPBF |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 0.175 A SWITCHED CAPACITOR CONVERTER, 1500 kHz SWITCHING FREQ-MAX, PDSO10 |
| 封裝： | 3 X 2 MM, LEAD FREE, PLASTIC, MO-229WECD-1, DFN-10 |
| 文件頁(yè)數(shù)： | 2/14頁(yè) |
| 文件大?。?/td> | 263K |
| 代理商： | LTC3225EDDB-1#TRMPBF |
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LTC3225/LTC3225-1
10
3225fb
Table 1 contains a list of ceramic capacitor manufacturers
and how to contact them.
Table 1. Capacitor Manufacturers
AVX
www.avx.com
Kemet
www.kemet.com
Murata
www.murata.com
Taiyo Yuden
www.t-yuden.com
Vishay
www.vishay.com
TDK
www.component.tdk.com
Layout Considerations
Due to the high switching frequency and high transient
currents produced by the LTC3225/LTC3225-1, careful
board layout is necessary for optimum performance. An
unbroken ground plane and short connections to all the
external capacitors improves performance and ensures
proper regulation under all conditions.
The voltages on the ying capacitor pins C+ and C– have
very fast rise and fall times. The high dV/dt values on
these pins can cause energy to capacitively couple to
adjacent printed circuit board traces. Magnetic elds can
also be generated if the ying capacitors are far from the
part (i.e. the loop area is large). To prevent capacitive
energy transfer, a Faraday shield may be used. This is a
grounded PC trace between the sensitive node and the
LTC3225/LTC3225-1 pins. For a high quality AC ground it
should be returned to a solid ground plane that extends
all the way to the LTC3225/LTC3225-1.
Table 2. Supercapacitor Manufacturers
CAP-XX
www.cap-xx.com
NESS CAP
www.nesscap.com
Maxwell
www.maxwell.com
Bussmann
www.cooperbussmann.com
AVX
www.avx.com
Illinois Capacitor
www.illcap.com
Tecate Group
www.tecategroup.com
Charging a Single Supercapacitor
The LTC3225/LTC3225-1 can also be used to charge a
single supercapacitor by connecting two series-connected
matched ceramic capacitors with a minimum capacitance
of 100μF in parallel with the supercapacitor as shown in
Figure 3.
APPLICATIONS INFORMATION
Figure 3. Charging a Single Supercapacitor
C1
CSUP
VOUT
C1 = C2 ≥ 100μF
C2
10
3
8, 11
3225 F03
LTC3225
LTC3225-1
COUT
CX
GND
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LTC3225EDDB-TRMPBF | 制造商:LINER 制造商全稱:Linear Technology 功能描述:150mA Supercapacitor Charger |
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| LTC3226_12 | 制造商:LINEAR 制造商全稱:LINEAR 功能描述:2-Cell Supercapacitor Charger with Backup |
| LTC3226EUD | 制造商:LINEAR 制造商全稱:LINEAR 功能描述:2-Cell Supercapacitor Charger with Backup PowerPath Controller |
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