Datasheet Linear Technology LT3681 — Datenblatt

Hersteller	Linear Technology
Serie	LT3681

36V, 2A, 2,8MHz Step-Down-Schaltregler mit integrierter Leistungs-Schottky-Diode

Datenblätter

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PDF, 381 Kb, Sprache: en, Datei hochgeladen: Sep 18, 2017, Seiten: 24
36V, 2A, 2.8MHz Step-Down Switching Regulator with Integrated Power Schottky Diode

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Verpackung

	LT3681EDE#PBF	LT3681EDE#TRPBF
N	1	2
Package	4x3 DFN-14 Paketumrisszeichnung	4x3 DFN-14 Paketumrisszeichnung
Package Code	DE14MA	DE14MA
Package Index	05-08-1731	05-08-1731
Pin Count	14	14

Parameter

Parameters / Models	LT3681EDE#PBF	LT3681EDE#TRPBF
Architecture	Constant Frequency Current Mode	Constant Frequency Current Mode
Demo Boards	DC1122A	DC1122A
Design Tools	LTspice File,LTpowerCAD Model	LTspice File,LTpowerCAD Model
Export Control	no	no
Features	Burst Mode, Resistor Set Frequency, Power Good	Burst Mode, Resistor Set Frequency, Power Good
Frequency, kHz	2800	2800
Frequency Adjust Range	300kHz - 2.8MHz	300kHz - 2.8MHz
Integrated Inductor	no	no
Isupply, mA	0.05	0.05
Max Phases	1	1
Monolithic	yes	yes
Number of Outputs	1	1
Operating Temperature Range, °C	0 to 85	0 to 85
Output Current, A	2	2
Polyphase	no	no
Switch Current, A	3.8	3.8
Synchronous	no	no
Topology	Buck	Buck
Vin Max, V	36	36
Vin Min, V	3.6	3.6
Vout Max, V	20	20
Vout Maximum	20V	20V
Vout Min, V	1.265	1.265

Öko-Plan

	LT3681EDE#PBF	LT3681EDE#TRPBF
RoHS	Compliant	Compliant

Konstruktionshinweise

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36V 2A Buck Regulator Integrates Power Schottky &mdash DN412
PDF, 88 Kb, Datei veröffentlicht: Jun 6, 2007
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advertisement 36V 2A Buck Regulator Integrates Power Schottky
Design Note 412
David Ng
Introduction
Everyone wants more power in less space. However, the
task of designing a power supply is easy to describe but
difп¬Ѓcult to execute. How does a designer select an optimal
set of components that yields the best possible power
supply in terms of size, cost and performance? Well, it
is easier if the selection is reduced to only a handful of
components. A Small, Simple Solution
The LT3681 integrates a wide input voltage range, high
performance buck controller, power switch, high side
bootstrapping boost diode and a power Schottky diode.
All of these attributes are crammed into a tiny but thermally efп¬Ѓcient 14-pin 3mm Г— 4mm DFN package. So,
all a designer needs to implement a full-featured buck
converter is to add the output LC п¬Ѓlter and a few passives. For instance, the LTВ®3681 reduces parts selection to only
a few passive components by integrating all of the power
semiconductors necessary to make a buck converter
into a single package. DonвЂ™t think that this high level of
integration limits the usefulness of this part. The LT3681
accepts inputs from 3.6V to 34V, provides excellent line
and load regulation and dynamic response, and offers …

Modellreihe

Serie: LT3681 (2)

LT3681EDE#PBF LT3681EDE#TRPBF

Herstellerklassifikation

Power Management > Switching Regulator > Step-Down (Buck) Regulators > Micropower Buck Regulators | Internal Power Switch Buck