Datasheet Linear Technology LTC3891EFE#PBF

ManufacturerLinear Technology
SeriesLTC3891
Part NumberLTC3891EFE#PBF

Low IQ, 60V Synchronous Step-Down Controller

Datasheets

Datasheet LTC3891
PDF, 691 Kb, Language: en, File uploaded: Dec 25, 2016, Pages: 32
Low IQ, 60V Synchronous Step-Down Controller
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Prices

Packaging

PackageTSSOP-20
Package CodeFE
Package Index05-08-1663 (CB)

Parametrics

ArchitectureConstant Frequency Current Mode
Demo BoardsDC1940A,DC1695B
Design ToolsLTspice File,LTpowerCAD File
Export Controlno
FeaturesDCR Current Sense, Resistor Set Frequency, External Synchronization, Burst Mode, Power Good
Frequency900 kHz
Frequency Adjust Range50kHz - 900kHz
Frequency Sync Range75kHz - 750kHz
Integrated Inductorno
Ishutdown14 µA
Isupply0.05 mA
Max Phases1
Monolithicno
Number of Outputs1
Operating Temperature Range0 to 85 °C
Output Current15 A
Polyphaseno
Sense ResistorRsense, DCR
Switch Current15 A
Synchronousyes
TopologyBuck
Vin Max60 V
Vin Min4 V
Vout Max24 V
Vout Maximum24V
Vout Min0.8 V
Vref Accuracy Over Temp1 %

Eco Plan

RoHSCompliant

Design Notes

  • Step-Down Converter Delivers 25A at 12VOUT from Inputs Up to 60V &mdash DN1024
    PDF, 141 Kb, File published: Mar 13, 2012
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  • Bootstrap Biasing of High Input Voltage Step-Down Controller Increases Converter Efficiency &mdash DN493
    PDF, 71 Kb, File published: Jul 15, 2011
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Articles

  • Step-Down Converter Delivers 25A at 12V Output from Inputs Up to 60V &mdash LT Journal
    PDF, 2.2 Mb, File published: Jul 20, 2012
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Model Line

Manufacturer's Classification

  • Power Management > Switching Regulator > Step-Down (Buck) Regulators > Micropower Buck Regulators | High Input Voltage Buck | External Power Switch Buck Controllers
  • Space & Harsh Environment > Extended Temperature Plastic (H & MP) > Extended Temperature (H & MP) Switching Regulators

Other Names:

LTC3891EFEPBF, LTC3891EFE PBF