Datasheet Linear Technology LTC3855IFE#TRPBF — Datenblatt

HerstellerLinear Technology
SerieLTC3855
ArtikelnummerLTC3855IFE#TRPBF

Dualer, mehrphasiger synchroner DC / DC-Controller mit differenzieller Fernerkundung

Datenblätter

Datasheet LTC3855
PDF, 2.2 Mb, Sprache: en, Datei hochgeladen: Sep 23, 2017, Seiten: 44
Dual, Multiphase Synchronous DC/DC Controller with Differential Remote Sense
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Preise

Verpackung

PackageTSSOP-38
Package CodeFE
Package Index05-08-1772

Parameter

ArchitectureConstant Frequency Current Mode
Demo BoardsDC1441A,DC1586A,DC1617A-A,DC1617A-B
Design ToolsLTspice File,LTpowerCAD File
Export Controlno
FeaturesDifferential Remote Sense, PolyPhase, DCR Current Sense, Tracking, External Synchronization
Frequency770 kHz
Frequency Sync Range250kHz - 770kHz
Integrated Inductorno
Ishutdown30 µA
Isupply3.5 mA
Max Phases2, 3, 4, 6, 12
Monolithicno
Number of Outputs2
Operating Temperature Range-40 to 85 °C
Output Current30 A
Output Current 230 A
Polyphaseyes
Sense ResistorRsense, DCR
Switch Current30 A
Switch Current 230 A
Synchronousyes
TopologyBuck
Topology 1Buck
Topology 2Buck
Vin Max38 V
Vin Min4.5 V
Vout Max12.5 V
Vout Maximum12.5V
Vout Min0.6 V
Vout Min 20.6 V
Vref Accuracy Over Temp0.75 %

Öko-Plan

RoHSCompliant

Anwendungshinweise

  • PCB Layout Considerations for Non-Isolated Switching Power Supplies &mdash AN136
    PDF, 215 Kb, Datei veröffentlicht: Sep 20, 2012
    The best news when you power up a prototype supply board for the very first time is when it not only works, but also runs quiet and cool. Unfortunately, this does not always happen. A common problem of switching power supplies is “unstable” switching waveforms. Sometimes, waveform jittering is so pronounced that audible noise can be heard from the magnetic components. If the problem is related to the printed circuit board (PCB) layout, identifying the cause can be difficult. This is why proper PCB layout at the early stage of a switching supply design is very critical. Its importance cannot be overstated.
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  • Modeling and Loop Compensation Design of Switching Mode Power Supplies &mdash AN149
    PDF, 1.4 Mb, Datei veröffentlicht: Mar 23, 2015
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Konstruktionshinweise

  • Dual Output Step-Down Controller Produces Accurate, Efficient and Reliable High Current Rails &mdash DN478
    PDF, 84 Kb, Datei veröffentlicht: Mar 23, 2010
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Artikel

  • 6mm × 6mm DC/DC Controller for High Current DCR Sensing Applications &mdash LT Journal
    PDF, 494 Kb, Datei veröffentlicht: Apr 1, 2010
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Modellreihe

Herstellerklassifikation

  • Power Management > Switching Regulator > Step-Down (Buck) Regulators > Multiple Output Buck | External Power Switch Buck Controllers

Andere Namen:

LTC3855IFETRPBF, LTC3855IFE TRPBF

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