Datasheet Linear Technology LT1976HFE#TRPBF — Ficha de datos

Fabricante	Linear Technology
Serie	LT1976
Numero de parte	LT1976HFE#TRPBF

Regulador de conmutación descendente de alto voltaje de 1,5 A, 200 kHz con corriente de reposo de 100 µA

Hojas de datos

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PDF, 314 Kb, Idioma: en, Archivo subido: sept 3, 2017, Páginas: 28
High Voltage 1.5A, 200kHz Step-Down Switching Regulator with 100µA Quiescent Current

Extracto del documento

Embalaje

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

Paramétricos

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 125 °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 %

Plan ecológico

RoHS

Obediente

Otras opciones

LT1976B

Notas de Diseño

Descargar
60V Step-Down DC/DC Converter Has Only 100ВµA Quiescent Current &mdash DN1007
PDF, 61 Kb, Archivo publicado: marzo 8, 2005
Extracto del documento
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 …

Linea modelo

Serie: LT1976 (10)

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

Clasificación del fabricante

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

Otros nombres:

LT1976HFETRPBF, LT1976HFE TRPBF