Datasheet Linear Technology LT1940LEFE#TRPBF — Datenblatt

Hersteller	Linear Technology
Serie	LT1940L
Artikelnummer	LT1940LEFE#TRPBF

Dual Monolithic 1.4A, 1.1MHz Step-Down-Schaltregler

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PDF, 288 Kb, Sprache: en, Datei hochgeladen: Sep 3, 2017, Seiten: 20
Dual Monolithic 1.4A, 1.1MHz Step-Down Switching Regulator

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Verpackung

Package	TSSOP-16
Package Code	FE
Package Index	05-08-1663 (BA)

Parameter

Architecture	Constant Frequency Current Mode
Demo Boards	DC519A
Design Tools	LTspice Model,LTpowerCAD Model
Export Control	no
Features	Anti-Phase Switching, Power Good
Frequency	1100 kHz
Integrated Inductor	no
Ishutdown	30 µA
Isupply	3.8 mA
Max Phases	2
Monolithic	yes
Number of Outputs	2
Operating Temperature Range	0 to 85 °C
Output Current	1.4 A
Output Current 2	1.4 A
Polyphase	yes
Switch Current	2.4 A
Switch Current 2	2.4 A
Synchronous	no
Topology	Buck
Topology 1	Buck
Topology 2	Buck
Vin Max	7 V
Vin Min	3.6 V
Vout Max	22 V
Vout Maximum	.88VIN
Vout Min	1.25 V
Vout Min 2	1.25 V

Öko-Plan

RoHS

Compliant

Andere Optionen

Konstruktionshinweise

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Dual Monolithic Buck Regulator Provides Two 1.4A Outputs with 2-Phase Switching to Reduce EMI &mdash DN305
PDF, 82 Kb, Datei veröffentlicht: Mar 1, 2003
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advertisement Dual Monolithic Buck Regulator Provides Two 1.4A Outputs
with 2-Phase Switching to Reduce EMI вЂ“ Design Note 305
Jeff Witt
Introduction
Advanced electronic systems that use a single voltage
supply are a thing of the past. TodayвЂ™s electronic systems require several regulated voltages; even relatively
simple subsystems need a minimum of two supplies.
Microprocessors and DSPs, for example, might require
both a 1.8V core supply and a 3.3V supply for I/O and
memory. Many board level systems require both 3.3V
and 5V. Added to this mix is the ever increasing packaging density of electronic products. Voltage regulators
must п¬Ѓt in a small space in close proximity to sensitive
circuits, meaning they must be small, efп¬Ѓcient and low
noise. Linear regulators may generate too much heat,
or be too bulky for some applications, and switching
regulators present possible EMI problems.
Circuit Description
The LTВ®1940 is a dual step-down switching regulator
that solves these problems for systems requiring two or
VIN
7V TO 25V more regulated voltages. Its wide input range, 3.6V to
25V, accepts a variety of power sources. The low proп¬Ѓle
16-lead TSSOP package has an exposed metal backside, …

Modellreihe

Serie: LT1940L (2)

LT1940LEFE#PBF LT1940LEFE#TRPBF

Herstellerklassifikation

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

Andere Namen:

LT1940LEFETRPBF, LT1940LEFE TRPBF

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