IC-Hersteller Analog Devices

IC-Hersteller (99)

Analog Devices LT8582

Dual 3A Boost/Inverting/SEPIC DC/DC Converter with Fault Protection

Details

TopologieSEPIC Buck-Boost Topologie
Eingangsspannung3-19 V
Schaltfrequenz2500 kHz
Ausgang 15 V / 1.5 A

Beschreibung

The LT®8582 is a dual independent channel PWM DC/DC converter with a power good pin and built-in fault protection to help guard against input overvoltage and overtemperature conditions. Each channel consists of a 42V master switch and a 42V slave switch that can be tied together for a total current limit of 3A.The LT8582 is ideal for many local power supply designs. Each channel can be easily configured in boost, SEPIC, inverting, or flyback configurations. Together, the two channels can produce a 12V and a –12V output with 14.4W of combined output power from a 5V input. In addition, the LT8582’s slave switch allows the part to be configured in high voltage, high power charge pump topologies that are more efficient and require fewer components than traditional circuits.The LT8582 also features innovative SHDN pin circuitry that allows for slowly varying input signals and an adjustable undervoltage lockout function. Additional features such as output short protection, frequency foldback and soft-start are integrated. The LT8582 is available in a 24-pin 7mm× 4mm DFN package.

Eigenschaften

  • Dual 42V, 3A Combined Power Switch
  • Master/Slave (1.7A/1.3A) Switch Design
  • Wide Input Range: 2.5V to 22V Operating, 40V Maximum Transient
  • Power Good Pin for Event Based Sequencing
  • Switching Frequency Up to 2.5MHz
  • Each Channel Easily Configurable as a Boost, SEPIC,inverting or Flyback Converter
  • Low VCESAT Switch: 270mV at 2.75A (Typical)
  • Can be Synchronized to an External Clock
  • Output Short-Circuit Protection
  • High Gain SHDN Pin Accepts Slowly Varying InputSignals
  • 24-Pin 7mm × 4mm DFN Package

Typische Anwendungen

  • Local Power Supply
  • TFT-LCD Bias Supplies
  • Vacuum Fluorescent Display (VFD) Bias Supplies
  • Automotive Engine Control Unit (ECU) Power

Weiterführende Informationen

Artikeldaten

Artikel Nr. Daten­blatt Simu­lation Downloads Status ProduktserieL1
(µH)
L2
(µH)
nIR 1
(A)
IR 2
(A)
ISAT 1
(A)
ISAT1
(A)
ISAT2
(A)
RDC1 typ
(mΩ)
RDC2 typ
(mΩ)
RDC1 max
(mΩ)
RDC2 max
(mΩ)
fres 1
(MHz)
Muster
74489440047SPEC
9 Dateien Aktiv i| Produktion ist aktiv. Erwartete Lebenszeit: >10 Jahre.WE-TDC SMT-Doppeldrossel 4.7 4.7 1:1 1.85 1.85 4.2 4.2 4.2 54.5 54.5 64 64 30
Artikel Nr. Daten­blatt Simu­lation
74489440047SPEC
Muster
Artikel Nr. Daten­blatt Simu­lation Downloads Status ProduktserieL1
(µH)
L2
(µH)
nIR 1
(A)
IR 2
(A)
ISAT 1
(A)
ISAT1
(A)
ISAT2
(A)
RDC1 typ
(mΩ)
RDC2 typ
(mΩ)
RDC1 max
(mΩ)
RDC2 max
(mΩ)
fres 1
(MHz)
Muster