Datasheet Linear Technology LTC3122EDE#PBF — Datenblatt

Hersteller	Linear Technology
Serie	LTC3122
Artikelnummer	LTC3122EDE#PBF

15 V, 2,5 A synchroner DC / DC-Aufwärtswandler mit Ausgangstrennung

Datenblätter

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PDF, 512 Kb, Sprache: en, Datei hochgeladen: Sep 20, 2017, Seiten: 26
15V, 2.5A Synchronous Step-Up DC/DC Converter with Output Disconnect

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Preise

Verpackung

Package	4x3 DFN-12
Package Code	DE/UE
Package Index	05-08-1695

Parameter

Architecture	Constant Frequency Current Mode
Demo Boards	DC1764A
Design Tools	LTspice File,LTpowerCAD File
Export Control	no
Features	Burst Mode, Output Disconnect, Resistor Set Frequency, External Synchronization
Frequency	3000 kHz
Frequency Adjust Range	Up to 3MHz
Frequency Sync Range	Up to 3MHz
Integrated Inductor	no
Ishutdown	0.01 µA
Isupply	0.025 mA
Max Phases	1
Monolithic	yes
Number of Outputs	1
Operating Temperature Range	0 to 85 °C
Polyphase	no
Switch Current	3.5 A
Synchronous	yes
Topology	Boost
Vin Max	5.5 V
Vin Min	0.5 V
Vin Min Startup	1.7 V
Vout Max	15 V
Vout Maximum	15V
Vout Min	2.2 V
Vswitch Max	15 V

Öko-Plan

RoHS

Compliant

Konstruktionshinweise

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1ОјA IQ Synchronous Boost Converter Extends Battery Life in Portable Devices &mdash DN516
PDF, 309 Kb, Datei veröffentlicht: May 29, 2013
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1ВµA IQ Synchronous Boost Converter Extends Battery Life in
Portable Devices
Design Note 516
Goran Perica
Introduction
Boost converters are regularly used in portable devices to produce higher output voltages from lower
battery input voltages. Common battery configurations include two to three alkaline or NiMH cells or,
increasingly, Li-Ion batteries, yielding a typical input
voltage between 1.8V and 4.8V. Because the batteries used in portable devices are
usually as small as possible, they present high internal impedance under heavy loads, especially close to
the end of their discharge cycle. Unlike other boost
converters that struggle with high source impedance
at startup, the LTC3122 prevents high surge currents
at startup. The 12V output converter shown in Figure 1 is designed
to run from any typical small battery power source. This
design centers around the LTCВ®3122 boost converter,
which can efficiently generate a regulated output
up to 15V from a 1.8V to 5.5V input. The LTC3122
includes a 2.5A internal switch current limit and a full
complement of features to handle demanding boost
applications, including switching frequency programming, undervoltage lockout, Burst ModeВ® operation or
continuous switching mode, and true output disconnect.
The integrated synchronous rectifier is turned off when …

Modellreihe

Serie: LTC3122 (10)

LTC3122EDE#PBF LTC3122EDE#TRPBF LTC3122EMSE#PBF LTC3122EMSE#TRPBF LTC3122HMSE#PBF LTC3122HMSE#TRPBF LTC3122IDE#PBF LTC3122IDE#TRPBF LTC3122IMSE#PBF LTC3122IMSE#TRPBF

Herstellerklassifikation

Power Management > Switching Regulator > Step-Up (Boost) Regulators > Micropower Boost | Internal Power Switch Boost
Space & Harsh Environment > Extended Temperature Plastic (H & MP) > Extended Temperature (H & MP) Switching Regulators

Andere Namen:

LTC3122EDEPBF, LTC3122EDE PBF