參數(shù)資料
型號(hào)： LT3582EUD#TRPBF
廠商： LINEAR TECHNOLOGY CORP
元件分類： 穩(wěn)壓器
英文描述： 0.72 A SWITCHING REGULATOR, PQCC16
封裝： 3 X 3 MM, LEAD FREE, PLASTIC, MO-220WEED-2, QFN-16
文件頁(yè)數(shù)： 10/28頁(yè)
文件大?。?/td> 315K
代理商： LT3582EUD#TRPBF
LT3582/LT3582-5/LT3582-12
18
3582512fb
Choosing Inductors
Several series of inductors that work well with the LT3582
series are listed in Table 3. This table is not complete, and
there are many other manufacturers and parts that can
be used. Consult each manufacturer for more detailed
information and for their entire selection of related parts,
as many different sizes and shapes are available.
Table 3. Inductor Manufacturers
Coilcraft
LPS3008-LPS4018 Series,
XPL2010 Series
www.coilcraft.com
Murata
LQH32C, LQH43C Series
www.murata.com
Sumida
CDRH26D09, CDRH26D11,
CDRH3D14 Series
www.sumida.com
TDK
VLF and VLCF Series
www.tdk.com
Würth
Elektronik
WE-TPC Series Type T, TH,
XS and S
www.we-online.com
Inductances of 2.2μH to 10μH typically result in a good
tradeoff between inductor size and system performance.
More inductance typically yields an increase in efciency
at the expense of increased output ripple. Less inductance
may be used in a given application depending on required
efciency and output current. For higher efciency, choose
inductors with high frequency core material, such as ferrite,
to reduce core losses. Also to improve efciency, choose
inductors with more volume for a given inductance. The
inductor should have low DCR (copper-wire resistance)
to reduce I2R losses, and must be able to handle the peak
inductor current without saturating. To minimize radiated
noise, use a toroidal or shielded inductor (note that the
inductance of shielded types will drop more as current
increases, and will saturate more easily).
Peak Current Rating: Real inductors can experience a drop
in inductance as current and temperature increase. The
inductors should have saturation current ratings higher
than the peak inductor currents. The peak inductor cur-
rents can be calculated as:
IPK ILIMIT +
VLSWON TOS
L
mA
where:
IPK
= Peak inductor current
ILIMIT
= Typically 350mA for Boost and 600mA
for Inverting
L
= Inductance in μH
VLSWON = Maximum inductor voltage when the
power switch is “on.” Typically max VIN
for the Boost and Inverting converters.
TOS
= 100 for Boost and 125 for Inverting
APPLICATIONS INFORMATION
相關(guān)PDF資料
PDF描述
LT3582EUD-12#TRPBF 0.72 A SWITCHING REGULATOR, PQCC16
LT3582EUD#PBF 0.72 A SWITCHING REGULATOR, PQCC16
LT3640EFE#TRPBF 3.4 A DUAL SWITCHING CONTROLLER, 2350 kHz SWITCHING FREQ-MAX, PDSO28
LT3640IFE#TRPBF 3.4 A DUAL SWITCHING CONTROLLER, 2350 kHz SWITCHING FREQ-MAX, PDSO28
LT3640IUFD#PBF 3.4 A DUAL SWITCHING CONTROLLER, 2350 kHz SWITCHING FREQ-MAX, PQCC28
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