Datasheet Linear Technology LTC3425 — Даташит

Производитель	Linear Technology
Серия	LTC3425

4-фазный синхронный повышающий преобразователь постоянного тока, 5 А, 8 МГц

Datasheets

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PDF, 284 Кб, Язык: анг., Файл закачен: 21 сен 2017, Страниц: 24
5A, 8MHz, 4-Phase Synchronous Step-Up DC/DC Converter

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Цены

Купить LTC3425 на РадиоЛоцман.Цены — от 19 до 1 898 ₽ 45 предложений от 22 поставщиков Преобразователь DC/DC, Conv DC-DC 0.5V to 4.5V Synchronous Step Up Single-Out 2.4V to 5.25V 3A Automotive 32Pin QFN EP
ChipWorker Весь мир	LTC3425EUH Linear Technology	192 ₽
EIS Components Весь мир	LTC3425EUH#PBF Analog Devices	336 ₽
Lixinc Electronics Весь мир	LTC3425EUH#PBF Linear Technology	от 446 ₽
ЭИК Россия	LTC3425EUH#PBF Analog Devices	от 1 638 ₽

Корпус / Упаковка / Маркировка

	LTC3425EUH#PBF	LTC3425EUH#TRPBF
N	1	2
Корпус	5x5 QFN-32 Габаритный чертеж корпуса	5x5 QFN-32 Габаритный чертеж корпуса
Код корпуса	UH	UH
Индекс корпуса	05-08-1693	05-08-1693
Количество выводов	32	32

Параметры

Parameters / Models	LTC3425EUH#PBF	LTC3425EUH#TRPBF
Архитектура	Constant Frequency Current Mode	Constant Frequency Current Mode
Demo Boards	DC616A,DC616B	DC616A,DC616B
Design Tools	LTspice Model	LTspice Model
Экспортный контроль	нет	нет
Основные особенности	PolyPhase, Output Disconnect, External Synchronization, Resistor Set Frequency, Power Good, Soft Start	PolyPhase, Output Disconnect, External Synchronization, Resistor Set Frequency, Power Good, Soft Start
Тактовая частота, kHz	8000	8000
Frequency Adjust Range	100kHz - 2MHz	100kHz - 2MHz
Frequency Sync Range	100kHz - 2MHz	100kHz - 2MHz
Integrated Inductor	нет	нет
Ishutdown, мкА	0.1	0.1
Isupply, мА	0.012	0.012
Monolithic	да	да
Количество выходов	1	1
Рабочий диапазон температур, °C	от 0 до 85	от 0 до 85
Polyphase	нет	нет
Switch Current, A	7	7
Synchronous	да	да
Topology	Boost	Boost
Vin Max, В	4.5	4.5
Vin Min, В	0.5	0.5
Vin Min Startup, В	.88	.88
Vout Max, В	5.25	5.25
Vout Min, В	2.4	2.4
Vswitch Max, В	6	6

Экологический статус

	LTC3425EUH#PBF	LTC3425EUH#TRPBF
RoHS	Совместим	Совместим

Design Notes

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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 Кб, Файл опубликован: 1 мар 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 …

Статьи

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Multiphase Power Conversion for Portable and Point-of-Load Boost Applications &mdash LT Journal
PDF, 395 Кб, Файл опубликован: 1 сен 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 …

Модельный ряд

Серия: LTC3425 (2)

LTC3425EUH#PBF LTC3425EUH#TRPBF

Классификация производителя

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