IC-Hersteller Analog Devices

IC-Hersteller (96)

Analog Devices LTC3621

17V, 1A Synchronous Step-Down Regulator with 3.5µA Quiescent Current

Details

TopologieAbwärtswandler
Eingangsspannung2.7-17 V
Schaltfrequenz820-1160 kHz
Ausgang 117 V / 1 A
IC-RevisionC

Beschreibung

The LTC®3621/LTC3621-2 is a high efficiency 17V, 1A synchronous monolithic step-down regulator. The switching frequency is fixed to 1MHz or 2.25MHz. The regulator features ultralow quiescent current and high efficienciesover a wide VOUT range.The step-down regulator operates from an input voltage range of 2.7V to 17V and provides an adjustable output range from 0.6V to VIN while delivering up to 1A of output current. A user-selectable mode input is provided to allow the user to trade off ripple noise for light load efficiency;Burst Mode operation provides the highest efficiency at light loads, while pulse-skipping mode provides the lowest voltage ripple.

Eigenschaften

  • Wide VIN Range: 2.7V to 17V
  • Wide VOUT Range: 0.6V to VIN
  • 95% Max Efficiency
  • Low IQ < 3.5µA, Zero-Current Shutdown
  • Constant Frequency (1MHz/2.25MHz)
  • Full Dropout Operation with Low IQ
  • 1A Rated Output Current
  • ±1% Output Voltage Accuracy
  • Current Mode Operation for Excellent Line and Load Transient Response
  • Pulse-Skipping, Forced Continuous, Burst Mode® Operation
  • Internal Compensation and Soft-Start
  • Overtemperature Protection
  • Compact 6-Lead DFN (2mm × 3mm) Package or 8-Lead MSOPE Package with Power Good Output and Independent SGND Pin

Remarks:Refer page no.12 for Inductor Selection Table.

Typische Anwendungen

  • Embedded Computing
  • Automotive Applications
  • Portable-Handheld Scanners
  • Industrial Computing
  • Emergency Radio

Weiterführende Informationen

Artikeldaten

Artikel Nr. Daten­blatt Simu­lation Downloads ProduktserieL
(µH)
IR
(A)
ISAT
(A)
fres
(MHz)
Montageart Muster
7440430012SPEC
8 Dateien WE-TPC SMT-Speicherdrossel 1.2 3.1 2.8 150 SMT
7440430018SPEC
8 Dateien WE-TPC SMT-Speicherdrossel 1.8 2.7 2.45 120 SMT
7440430022SPEC
8 Dateien WE-TPC SMT-Speicherdrossel 2.2 2.5 2.35 100 SMT
7440430027SPEC
8 Dateien WE-TPC SMT-Speicherdrossel 2.7 2.35 1.95 80 SMT
744043003SPEC
8 Dateien WE-TPC SMT-Speicherdrossel 3.3 2.15 1.8 80 SMT
7440430039SPEC
8 Dateien WE-TPC SMT-Speicherdrossel 3.9 1.72 1.65 55 SMT
744043004SPEC
8 Dateien WE-TPC SMT-Speicherdrossel 4.7 1.55 1.7 60 SMT
Muster
Artikel Nr. Daten­blatt Simu­lation Downloads ProduktserieL
(µH)
IR
(A)
ISAT
(A)
fres
(MHz)
Montageart Muster