Datasheet Linear Technology LTC1704EGN#PBF — Datenblatt

Hersteller	Linear Technology
Serie	LTC1704
Artikelnummer	LTC1704EGN#PBF

550kHz Synchronschaltregler-Controller Plus Linearregler-Controller

Datenblätter

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PDF, 356 Kb, Sprache: en, Datei hochgeladen: Sep 20, 2017, Seiten: 28
550kHz Synchronous Switching Regulator Controller Plus Linear Regulator Controller

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Preise

Verpackung

Package	SSOP-16
Package Code	GN
Package Index	05-08-1641 (GN16)

Parameter

Architecture	Constant Frequency Current Mode
Demo Boards	DC357A-A,DC357A-B
Export Control	no
Features	LDO
Frequency	550 kHz
Integrated Inductor	no
Ishutdown	75 µA
Isupply	4.5 mA
Max Phases	1
Monolithic	no
Number of Outputs	2
Operating Temperature Range	0 to 85 °C
Output Current	20 A
Output Current 2	2 A
Polyphase	no
Sense Resistor	Rsense
Switch Current	20 A
Synchronous	yes
Topology	Buck, LDO
Topology 1	Buck
Topology 2	LDO
Vin Max	5.5 V
Vin Min	3.15 V
Vout Max	6 V
Vout Maximum	6V
Vout Min	0.8 V
Vout Min 2	0.8 V
Vref Accuracy Over Temp	1.5 %

Öko-Plan

RoHS

Compliant

Konstruktionshinweise

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Dual Output Supply Powers FPGAs from 3.3V and 5V Inputs &mdash DN311
PDF, 79 Kb, Datei veröffentlicht: May 2, 2003
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advertisement Dual Output Supply Powers FPGAs from 3.3V and 5V Inputs
Design Note 311
Haresh Patel
Introduction
FPGAs often require multiple power supplies: one for
the core voltage (usually 1.8V, but sometimes as low as
1.2V) and at least one more for the I/O circuitry (often
2.5V). The available input supply is either 3.3V or 5V.
One way to provide the multiple step-down conversions
is via multiple switcher-based power supplies; however,
this may be more complicated and cumbersome than
is warranted, especially if the I/O does not draw much
current. In such instances, the dual output LTC В®1704
is a simple and space-saving option. It can supply two
voltages with its versatile high frequency switcher and
its space-saving LDO controller.
Circuit Description
With a 5V input, the switcher channel can generate core
voltages from 0.8V to 3.3V at currents up to 15A. This
550kHz switcher reduces required LC п¬Ѓlter size while
VIN
5V + C6 1ОјF 1
R2 …

Modellreihe

Serie: LTC1704 (4)

LTC1704BEGN#PBF LTC1704BEGN#TRPBF LTC1704EGN#PBF LTC1704EGN#TRPBF

Herstellerklassifikation

Power Management > Switching Regulator > Step-Down (Buck) Regulators > External Power Switch Buck Controllers | Buck Regulator Plus LDO

Andere Namen:

LTC1704EGNPBF, LTC1704EGN PBF