Datasheet Linear Technology LTC3425EUH#PBF — Datenblatt

Hersteller	Linear Technology
Serie	LTC3425
Artikelnummer	LTC3425EUH#PBF

5A, 8MHz, 4-Phasen-Synchron-DC / DC-Aufwärtswandler

Datenblätter

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PDF, 284 Kb, Sprache: en, Datei hochgeladen: Sep 21, 2017, Seiten: 24
5A, 8MHz, 4-Phase Synchronous Step-Up DC/DC Converter

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Preise

Verpackung

Package	5x5 QFN-32
Package Code	UH
Package Index	05-08-1693

Parameter

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

Öko-Plan

RoHS

Compliant

Konstruktionshinweise

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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, Datei veröffentlicht: 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 …

Artikel

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Multiphase Power Conversion for Portable and Point-of-Load Boost Applications &mdash LT Journal
PDF, 395 Kb, Datei veröffentlicht: 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 …

Modellreihe

Serie: LTC3425 (2)

LTC3425EUH#PBF LTC3425EUH#TRPBF

Herstellerklassifikation

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

Andere Namen:

LTC3425EUHPBF, LTC3425EUH PBF

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Datenblätter Datasheet Analog Devices LTC3425

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