Datasheet Linear Technology LT3663EDCB#PBF — 数据表

制造商	Linear Technology
系列	LT3663
零件号	LT3663EDCB#PBF

具有输出电流限制的1.2A降压开关稳压器

数据表

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PDF, 354 Kb, 语言: en, 文件上传: Sep 18, 2017, 页数: 16
1.2A Step-Down Switching Regulator with Output Current Limit

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价格

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Package	2x3 DFN-8
Package Code	DCB
Package Index	05-08-1718

参数化

Architecture	Constant Frequency Current Mode
Demo Boards	DC1419A,DC1570A-A,DC1570A-B
Design Tools	LTspice File
Export Control	no
Features	Programmable Output Current Limit
Frequency	1500 kHz
Integrated Inductor	no
Ishutdown	0.01 µA
Isupply	2.4 mA
Max Phases	1
Monolithic	yes
Number of Outputs	1
Operating Temperature Range	0 to 85 °C
Output Current	1.2 A
Polyphase	no
Switch Current	2 A
Synchronous	no
Topology	Buck
Vin Max	36 V
Vin Min	7 V
Vout Max	5.5 V
Vout Maximum	5.5V
Vout Min	0.8 V
Vref Accuracy Over Temp	2 %

生态计划

RoHS

Compliant

文章

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Supercapacitor Charger with Adjustable Output Voltage and Adjustable Charging Current Limit &mdash LT Journal
PDF, 496 Kb, 档案已发布: Jun 1, 2009
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LвЂ‰DESIGN IDEAS Supercapacitor Charger with
Adjustable Output Voltage and
Adjustable Charging Current Limit
by Jim Drew Introduction
For applications using larger value
supercapacitors (tens to hundreds of
farads), a charger circuit with a relatively high charging current is needed
to minimize the recharge time of the
system. Supercapacitors are used as
energy hold up devices in applications
such as solid state RAID disks, where
information stored in high speed volatile memory must be transferred to
non-volatile flash memory when power
is lost. This transfer time may take
minutes, requiring hundreds of farads
to hold up the power supply until the
transfer is complete. The requirement
for the recharge time of these banks
of supercapacitors is typically less
than one hour. To accomplish this,
a high charging current is required.
This article describes a supercapacitor
charging circuit using the LT3663 that …
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1.2A Monolithic Buck Regulator Shrinks Supply Size and Cost with Programmable Output Current Limit &mdash LT Journal
PDF, 240 Kb, 档案已发布: Mar 1, 2009
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LвЂ‰DESIGN FEATURES 1.2A Monolithic Buck Regulator
Shrinks Supply Size and Cost with
Programmable Output Current Limit
by Tom Sheehan Introduction
Power supplies are often overqualified
for their job. This is because power
ICs often specify a current limit that
is more than twice the rated output
current of the device. The power supply
components are sized to handle the
maximum current that the IC can deliver, even if loads are unlikely to draw
that current during normal operation.
The components are bigger and more
expensive than they need to be.
There is, however, an alternative:
set an accurate maximum output current on the supply once the real world
load is known. Accurately setting the
maximum output current reduces the
required current rating of the regulatorвЂ™s power path components, thus
replacing big, expensive components
with smaller, less expensive ones.
A limit on the regulatorвЂ™s maximum output limits the maximum power
dissipation of both the supply and …

模型线

系列: LT3663 (27)

LT3663EDCB#PBF LT3663EDCB#TRMPBF LT3663EDCB#TRPBF LT3663EDCB-3.3#PBF LT3663EDCB-3.3#TRMPBF LT3663EDCB-3.3#TRPBF LT3663EMS8E#PBF LT3663EMS8E#TRPBF LT3663EMS8E-3.3#PBF LT3663EMS8E-3.3#TRPBF LT3663EMS8E-5#PBF LT3663EMS8E-5#TRPBF LT3663HMS8E#PBF LT3663HMS8E#TRPBF LT3663HMS8E-3.3#PBF LT3663HMS8E-3.3#TRPBF LT3663HMS8E-5#PBF LT3663HMS8E-5#TRPBF LT3663IDCB#PBF LT3663IDCB#TRMPBF LT3663IDCB#TRPBF LT3663IMS8E#PBF LT3663IMS8E#TRPBF LT3663IMS8E-3.3#PBF LT3663IMS8E-3.3#TRPBF LT3663IMS8E-5#PBF LT3663IMS8E-5#TRPBF

制造商分类

Power Management > Switching Regulator > Step-Down (Buck) Regulators > Internal Power Switch Buck
Space & Harsh Environment > Extended Temperature Plastic (H & MP) > Extended Temperature (H & MP) Switching Regulators

其他名称:

LT3663EDCBPBF, LT3663EDCB PBF