Datasheet Linear Technology LTC3425 — 数据表

制造商	Linear Technology
系列	LTC3425

5A，8MHz，4相同步升压DC / DC转换器

数据表

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PDF, 284 Kb, 语言: en, 文件上传: Sep 21, 2017, 页数: 24
5A, 8MHz, 4-Phase Synchronous Step-Up DC/DC Converter

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价格

打包

	LTC3425EUH#PBF	LTC3425EUH#TRPBF
N	1	2
Package	5x5 QFN-32 包装外形图	5x5 QFN-32 包装外形图
Package Code	UH	UH
Package Index	05-08-1693	05-08-1693
Pin Count	32	32

参数化

Parameters / Models	LTC3425EUH#PBF	LTC3425EUH#TRPBF
Architecture	Constant Frequency Current Mode	Constant Frequency Current Mode
Demo Boards	DC616A,DC616B	DC616A,DC616B
Design Tools	LTspice Model	LTspice Model
Export Control	no	no
Features	PolyPhase, Output Disconnect, External Synchronization, Resistor Set Frequency, Power Good, Soft Start	PolyPhase, Output Disconnect, External Synchronization, Resistor Set Frequency, Power Good, Soft Start
Frequency, kHz	8000	8000
Frequency Adjust Range	100kHz - 2MHz	100kHz - 2MHz
Frequency Sync Range	100kHz - 2MHz	100kHz - 2MHz
Integrated Inductor	no	no
Ishutdown, µA	0.1	0.1
Isupply, mA	0.012	0.012
Monolithic	yes	yes
Number of Outputs	1	1
Operating Temperature Range, °C	0 to 85	0 to 85
Polyphase	no	no
Switch Current, A	7	7
Synchronous	yes	yes
Topology	Boost	Boost
Vin Max, V	4.5	4.5
Vin Min, V	0.5	0.5
Vin Min Startup, V	.88	.88
Vout Max, V	5.25	5.25
Vout Min, V	2.4	2.4
Vswitch Max, V	6	6

生态计划

	LTC3425EUH#PBF	LTC3425EUH#TRPBF
RoHS	Compliant	Compliant

设计须知

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4-Phase Monolithic Synchronous Boost Converter Delivers 2.5A with Output Disconnect in a 5mm x 5mm QFN Package &mdash DN332
PDF, 99 Kb, 档案已发布: Mar 1, 2004
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advertisement 4-Phase Monolithic Synchronous Boost Converter Delivers 2.5A
with Output Disconnect in a 5mm Г— 5mm QFN Package
Design Note 332
David Salerno
Introduction
The LTCВ®3425 is the industryвЂ™s п¬Ѓrst 4-phase, monolithic
synchronous boost converter. It can start up with as little
as 1V and operate with inputs up to 4.5V. The output
voltage range is 2.4V to 5.25V, making it well suited
for battery-powered applications as well as point-ofload regulation in low voltage systems. The 4-phase
architecture allows for an effective switching frequency
of up to 8MHz, which in turn reduces output ripple current and peak inductor current by a factor of four (over
an equivalent single-phase circuit). This allows the use
of small, low cost, low proп¬Ѓle inductors and ceramic
capacitors even at high load currents. With 5A peak current capability and an effective switch
RDS(ON) of 40mО© (NMOS) and 50mО© (PMOS), the
LTC3425 is capable of efп¬Ѓciently delivering 2.5A load
current from a 0.8mm maximum proп¬Ѓle, 32-pin 5mm
Г— 5mm QFN package.
Multiple Operating Modes Optimize Performance
in Different Applications
The LTC3425 can be conп¬Ѓgured for automatic Burst
ModeВ® operation, п¬Ѓxed frequency mode with forced …

文章

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Multiphase Power Conversion for Portable and Point-of-Load Boost Applications &mdash LT Journal
PDF, 395 Kb, 档案已发布: Sep 1, 2003
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LINEAR TECHNOLOGY SEPTEMBER 2003 IN THIS ISSUEвЂ¦
COVER ARTICLE
Multiphase Power Conversion
for Portable and Point-of-Load
Boost Applications.1
David Salerno Issue Highlights .2
LTCВ® in the News .2
DESIGN FEATURES
CompactPCIВ® Hot Swapв„ў
Controller with I2Cв„ў Interface,
Bus Precharge and On-Chip
LOCAL_PCI_RESET# Logic.6
Victor Fleury Low Noise, Micropower
Precision Op Amp Swings
Outputs from Rail to Rail .10
Kris Lokere and Glen Brisebois Addressable Bus Buffer Provides
Capacitance Buffering, Live
Insertion and Nested Addressing
in 2-Wire Bus Systems .13
John Ziegler Versatile Hot Swap Controller
with Open Circuit Detect, Foldback
Current Limiting and Much More .17
Mark Belch Micropower SOT-23 Boost with …

模型线

系列: LTC3425 (2)

LTC3425EUH#PBF LTC3425EUH#TRPBF

制造商分类

Power Management > Switching Regulator > Step-Up (Boost) Regulators > Micropower Boost | Internal Power Switch Boost

相关刊物

数据表 Datasheet Analog Devices LTC3425

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