IC-Hersteller Analog Devices

IC-Hersteller (96)

Analog Devices LTC3315B

Dual 5V, 2A Synchronous Step-Down DC/DCs in 2mm × 2mm LQFN

Details

TopologieAbwärtswandler
Eingangsspannung3.3 V
Schaltfrequenz10000 kHz
Ausgang 10.8 V / 2 A
Ausgang 21.2 V / 2 A

Beschreibung

The LTC®3315B features dual 2A monolithic synchronous step-down converters operating from a 2.25V to 5.5V input supply in one package for space-constrained applications with demanding performance requirements. Using constant frequency, peak current mode control at switching frequencies up to 10MHz with a minimum ontime as low as 25ns, both bucks achieve high efficiency and fast transient response in a very small application footprint.

Eigenschaften

  • Dual Outputs Each with 2A Output Current
  • High Efficiency: 19mΩ NMOS and 75mΩ PMOS
  • Wide Bandwidth, Fast Transient Response
  • Switching Frequency Synchronizable Up to 10MHz
  • VIN Range: 2.25V to 5.5V
  • VOUT Range: 0.5V to VIN
  • VOUT Accuracy: }1%
  • Low Ripple Burst ModeR Operation
  • Peak Current Mode Control
  • Minimum On-Time: 25ns
  • Safely Tolerates Inductor Saturation in Overload
  • Shutdown Current: 1.2μA
  • Precision 400mV Enable Thresholds
  • Internal Soft-Start and Compensation
  • Power Good Output
  • Low Profile, Thermally Enhanced 12-Lead 2mm × 2mm × 0.74mm LQFN Package
  • AEC-Q100 Qualified for Automotive Applications

Typische Anwendungen

  • Telecom Supplies, Distributed DC Power Systems (POL), FPGA, ASIC, μP Core Supplies
  • Automotive
  • Industrial
  • Servers, Optical Networking, Communications

Weiterführende Informationen

Artikeldaten

Artikel Nr. Daten­blatt Simu­lation Downloads ProduktserieL
(µH)
IR
(A)
ISAT1
(A)
ISAT2
(A)
RDC max.
(mΩ)
fres
(MHz)
VersionISAT
(A)
RDC
(mΩ)
Muster
744040240016SPEC
8 Dateien WE-LQS SMT-Speicherdrossel 0.16 3.7 644 7 16
74479276124SPEC
8 Dateien WE-PMCI Power Molded Chip Induktivität 0.24 9 2.8 6.7 21 280 Standard 5.4
744040240047SPEC
8 Dateien WE-LQS SMT-Speicherdrossel 0.47 2.6 231 5 32
74479276147SPEC
8 Dateien WE-PMCI Power Molded Chip Induktivität 0.47 6.8 2.95 6.3 30 165 Standard 4.2
74479276147CSPEC
8 Dateien WE-PMCI Power Molded Chip Induktivität 0.47 6.8 2.95 6.3 30 165 Low RDC 4.5
Muster
Artikel Nr. Daten­blatt Simu­lation Downloads ProduktserieL
(µH)
IR
(A)
ISAT1
(A)
ISAT2
(A)
RDC max.
(mΩ)
fres
(MHz)
VersionISAT
(A)
RDC
(mΩ)
Muster