Datasheet Linear Technology LT1976BIFE#PBF — Datenblatt

Hersteller	Linear Technology
Serie	LT1976
Artikelnummer	LT1976BIFE#PBF

Hochspannungs-Abwärtsschaltregler mit 1,5 A und 200 kHz und 100 µA Ruhestrom

Datenblätter

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PDF, 314 Kb, Sprache: en, Datei hochgeladen: Sep 3, 2017, Seiten: 28
High Voltage 1.5A, 200kHz Step-Down Switching Regulator with 100µA Quiescent Current

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Verpackung

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

Parameter

Architecture	Constant Frequency Current Mode
Demo Boards	DC481A,DC977A
Design Tools	LTspice File
Export Control	no
Features	Burst Mode, External Synchronization
Frequency	200 kHz
Frequency Sync Range	230kHz - 600kHz
Integrated Inductor	no
Ishutdown	1 µA
Isupply	0.1 mA
Max Phases	1
Monolithic	yes
Number of Outputs	1
Operating Temperature Range	-40 to 85 °C
Output Current	1.24 A
Polyphase	no
Subname	LT1976
Switch Current	2.4 A
Synchronous	no
Topology	Buck
Vin Max	60 V
Vin Min	3.3 V
Vout Max	54 V
Vout Maximum	.90VIN
Vout Min	1.2 V
Vref Accuracy Over Temp	2 %

Öko-Plan

RoHS

Compliant

Andere Optionen

LT1976B

Konstruktionshinweise

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60V Step-Down DC/DC Converter Has Only 100ВµA Quiescent Current &mdash DN1007
PDF, 61 Kb, Datei veröffentlicht: Mar 8, 2005
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advertisement 60V Step-Down DC/DC Converter Has Only
100ВµA Quiescent Current вЂ“ Design Note 1007
Keith Szolusha
Introduction
High voltage bipolar monolithic step-down converters are
usually optimized for high efficiency at high output currents. But the consumption of over 1mA quiescent current
at zero load can be undesirable in battery-powered applications which operate with long periods of light load current. Although a shutdown function may reduce the
quiescent current in order to save battery life, it also drops
the output voltage to zero. In systems where a regulated
output voltage is always needed for light load applications
such as system diagnostics (and ready-to-use load transients), a solution with high efficiency at light load is needed.
The LTВ®1976 is designed to optimize efficiency over all
current levels, both high and low, with an extremely wide
input voltage range. Micropower bias current and Burst
ModeВ® operation enable it to consume a mere 100ВµA at
zero load and 12V input. The high efficiency bipolar NPN
power switch (0.2в„¦) provides up to 90% efficiency at load
current up to 1.25A.
The LT1976 is a 1.5A monolithic buck switching regulator. Its 3.3V to 60V input voltage range makes the LT1976 VIN
4V TO 60V 4.7ВµF
100V
CER VIN ideal for 14V and 42V (future) automotive applications
which must meet both sub-4V cold crank and high input …

Modellreihe

Serie: LT1976 (10)

LT1976BEFE#PBF LT1976BEFE#TRPBF LT1976BIFE#PBF LT1976BIFE#TRPBF LT1976EFE#PBF LT1976EFE#TRPBF LT1976HFE#PBF LT1976HFE#TRPBF LT1976IFE#PBF LT1976IFE#TRPBF

Herstellerklassifikation

Power Management > Switching Regulator > Step-Down (Buck) Regulators > High Input Voltage Buck | Micropower Buck Regulators | Internal Power Switch Buck
Space & Harsh Environment > Extended Temperature Plastic (H & MP) > Extended Temperature (H & MP) Switching Regulators

Andere Namen:

LT1976BIFEPBF, LT1976BIFE PBF