Datasheet Linear Technology LTC7149EUFD#PBF — Datenblatt

Hersteller	Linear Technology
Serie	LTC7149
Artikelnummer	LTC7149EUFD#PBF

60V, 4A Synchroner Abwärtsregler zum Invertieren von Ausgängen

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PDF, 482 Kb, Sprache: en, Datei hochgeladen: Mar 27, 2018, Seiten: 26
60V, 4A Synchronous Step-Down Regulator for Inverting Outputs

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Verpackung

Package	4x5 QFN-28
Package Code	UFD
Package Index	05-08-1712

Parameter

Architecture	Peak Current Mode
Demo Boards	DC2354A
Design Tools	LTspice File,LTpowerCAD File
Export Control	no
Features	Current Source Reference, Burst Mode, Resistor Set Frequency, External Synchronization,
Frequency	3000 kHz
Frequency Adjust Range	300kHz to 3MHz
Frequency Sync Range	300kHz to 3MHz
Integrated Inductor	no
Ishutdown	18 µA
Isupply	0.44 mA
Monolithic	yes
Number of Outputs	1
Operating Temperature Range	0 to 85 °C
Output Current	4 A
Polyphase	no
Switch Current	6 A
Synchronous	yes
Topology	Inverting
Topology 1	Inverting
Vin Max	60 V
Vin Min	3.4 V
Vout Max	28 V
Vout Maximum	28V
Vref Accuracy Over Temp	0.8 %
Vswitch Max	60 V

Öko-Plan

RoHS

Compliant

Konstruktionshinweise

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Inverting Regulator Takes Inputs Up to 50V and Supports Outputs to 4A &mdash DN552
PDF, 397 Kb, Datei veröffentlicht: May 25, 2016
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Inverting Regulator Takes Inputs Up to 50V and Supports
Outputs to 4A
Design Note 552
Victor Khasiev
Introduction
Positive-to-negative DC/DC conversion (inverting
output) is widely used in LCD devices, OLED displays,
audio amplifiers, industrial equipment, measurement
tools, test systems, LED drivers and battery chargers.
In all of these cases, the inverting converter must be
compact, support high power and accommodate an
extended input voltage range. The LTC В®7149 satisfies
all of these requirements. Its integrated 4A switches
and wide 3.4V to 60V input voltage range exceed the
requirements of the most demanding applications,
including those in automotive environments.
Circuit Description and Functionality
FigureВ 1 shows a positive-to-negative converter based
on the LTC7149. This solution delivers вЂ“10V at 2A
from an input voltage of 12VвЂ”an automotive rail, for
511О© ITH 10nF LTC7149EFE ISET
MODE/SYNC RSET
200k …

Modellreihe

Serie: LTC7149 (8)

LTC7149EFE#PBF LTC7149EFE#TRPBF LTC7149EUFD#PBF LTC7149EUFD#TRPBF LTC7149IFE#PBF LTC7149IFE#TRPBF LTC7149IUFD#PBF LTC7149IUFD#TRPBF

Herstellerklassifikation

Power Management > Switching Regulator > Inverting Regulators

Andere Namen:

LTC7149EUFDPBF, LTC7149EUFD PBF

Verwandte Veröffentlichungen

Datenblätter Datasheet Analog Devices LTC7149

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