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IC-Hersteller ADI Power by Linear

IC-Hersteller (84)

ADI Power by Linear LT3504

Quad 40V/1A Step-Down Switching Regulator with 100% Duty Cycle Operation

Details

TopologieAbwärtswandler
Eingangsspannung3.2-40 V
Schaltfrequenz350-2200 kHz
Ausgang 11 A
IC-RevisionA

Beschreibung

The LT®3504 consists of four 1A output current buck regulators. The LT3504 has a wide operating input range of 3.2V to 40V. An on-chip boost regulator allows each channel to operate up to 100% duty cycle and eliminates the need for four external charge pump circuits. The LT3504is designed to minimize external component count and results in a simple and small application circuit.The LT3504 operates robustly in fault conditions. Cycleby- cycle peak current limit and catch diode current limit sensing protect the part during overload conditions. Thermal shutdown protects the power switches at elevatedtemperatures. Soft-start helps keep the peak inductor current under control during startup.The LT3504 also features output voltage tracking and sequencing, programmable frequency, programmable undervoltage lockout, and a power good pin to indicate when all outputs are in regulation.

Eigenschaften

  • Wide Input Range: 3.2V to 40V
  • Four 1A Outputs
  • 100% Duty Cycle Operation
  • Resistor-Programmed Constant Frequency
  • Short-Circuit Robust
  • Wide SYNC Range: 350kHz to 2.2MHz
  • Anti-Phase Switching Reduces Ripple
  • 800mV FB Voltage
  • Independent Run/Soft-Start Pins
  • Shutdown with UVLO
  • Internal Compensation
  • Thermal Shutdown
  • Tiny 28-Lead (4mm × 5mm) Thermally Enhanced QFN Package

NOTE - see table 2 in page 14 for diffrent inductor values

Typische Anwendungen

  • Wall Transformer Regulation
  • Automotive Battery Regulation
  • Distributed Supply Regulation
  • Industrial Control Supplies

Weiterführende Informationen

Artikeldaten

Artikel Nr. Daten­blatt Simu­lation Downloads ProduktserieL
(µH)
IR
(A)
ISAT
(A)
RDC
(mΩ)
fres
(MHz)
MontageartRDC max.
(mΩ)
BauformVersion Muster
744042001SPEC
8 Dateien WE-TPC SMT-Speicherdrossel 1 2.7 2.6 20 177 SMT 30 4818 SMT
744778001SPEC
8 Dateien WE-PD SMT-Speicherdrossel 1 5.37 6.4 9 115 SMT 12 7332 Standard
7447789001SPEC
8 Dateien WE-PD SMT-Speicherdrossel 1 5.37 6.4 10 115 SMT 12 7332 Robust
7440430012SPEC
8 Dateien WE-TPC SMT-Speicherdrossel 1.2 3.1 2.8 17 150 SMT 20 4828
744774022SPEC
8 Dateien WE-PD2 SMT-Speicherdrossel 2.2 4.6 8.2 26 54 SMT 41 5848
744042003SPEC
8 Dateien WE-TPC SMT-Speicherdrossel 3.3 1.95 1.8 50 80 SMT 65 4818 SMT
744043003SPEC
8 Dateien WE-TPC SMT-Speicherdrossel 3.3 2.15 1.8 30 80 SMT 35 4828
744778003SPEC
8 Dateien WE-PD SMT-Speicherdrossel 3.3 3.1 4.1 24 61 SMT 32 7332 Standard
744774033SPEC
8 Dateien WE-PD2 SMT-Speicherdrossel 3.3 4 7.5 42 43 SMT 60 5848
744042004SPEC
8 Dateien WE-TPC SMT-Speicherdrossel 4.7 1.72 1.65 70 70 SMT 82 4818 SMT
744043004SPEC
8 Dateien WE-TPC SMT-Speicherdrossel 4.7 1.55 1.7 50 60 SMT 70 4828
744778004SPEC
8 Dateien WE-PD SMT-Speicherdrossel 4.7 2.32 4.2 42 45 SMT 60 7332 Standard
744774047SPEC
8 Dateien WE-PD2 SMT-Speicherdrossel 4.7 3 5.5 56 33 SMT 71 5848
744042006SPEC
8 Dateien WE-TPC SMT-Speicherdrossel 6.8 1.5 1.25 80 60 SMT 100 4818 SMT
744043006SPEC
8 Dateien WE-TPC SMT-Speicherdrossel 6.8 1.3 1.25 80 57 SMT 90 4828
7447789006SPEC
8 Dateien WE-PD SMT-Speicherdrossel 6.8 2.5 2.75 42 38 SMT 44 7332 Robust
744774068SPEC
8 Dateien WE-PD2 SMT-Speicherdrossel 6.8 2.4 5 71 28 SMT 82 5848
744042100SPEC
8 Dateien WE-TPC SMT-Speicherdrossel 10 1.3 1 120 45 SMT 150 4818 SMT
744043100SPEC
8 Dateien WE-TPC SMT-Speicherdrossel 10 1.19 1 95 40 SMT 110 4828
74477810SPEC
8 Dateien WE-PD SMT-Speicherdrossel 10 1.83 2.2 68 32 SMT 72 7332 Standard
74477410SPEC
8 Dateien WE-PD2 SMT-Speicherdrossel 10 2.2 2.5 78 26 SMT 100 5848
744774122SPEC
8 Dateien WE-PD2 SMT-Speicherdrossel 22 1.28 1.53 109 16 SMT 180 5848
744778127SPEC
8 Dateien WE-PD SMT-Speicherdrossel 27 1.27 1.3 140 18 SMT 240 7332 Standard
7447789127SPEC
8 Dateien WE-PD SMT-Speicherdrossel 27 1.27 1.35 130 18 SMT 210 7332 Robust
Muster
Artikel Nr. Daten­blatt Simu­lation Downloads ProduktserieL
(µH)
IR
(A)
ISAT
(A)
RDC
(mΩ)
fres
(MHz)
MontageartRDC max.
(mΩ)
BauformVersion Muster