Datasheet Linear Technology LTC3891

ManufacturerLinear Technology
SeriesLTC3891

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

LTC3891EFE#PBFLTC3891EFE#TRPBFLTC3891EUDC#PBFLTC3891EUDC#TRPBFLTC3891HFE#PBFLTC3891HFE#TRPBFLTC3891HUDC#PBFLTC3891HUDC#TRPBFLTC3891IFE#PBFLTC3891IFE#TRPBFLTC3891IUDC#PBFLTC3891IUDC#TRPBFLTC3891MPFE#PBFLTC3891MPFE#TRPBFLTC3891MPUDC#PBFLTC3891MPUDC#TRPBF
N12345678910111213141516
PackageTSSOP-20
Package Outline Drawing
TSSOP-20
Package Outline Drawing
3x4 QFN-20
Package Outline Drawing
3x4 QFN-20
Package Outline Drawing
TSSOP-20
Package Outline Drawing
TSSOP-20
Package Outline Drawing
3x4 QFN-20
Package Outline Drawing
3x4 QFN-20
Package Outline Drawing
TSSOP-20
Package Outline Drawing
TSSOP-20
Package Outline Drawing
3x4 QFN-20
Package Outline Drawing
3x4 QFN-20
Package Outline Drawing
TSSOP-20
Package Outline Drawing
TSSOP-20
Package Outline Drawing
3x4 QFN-20
Package Outline Drawing
3x4 QFN-20
Package Outline Drawing
Package CodeFEFEUDCUDCFEFEUDCUDCFEFEUDCUDCFEFEUDCUDC
Package Index05-08-1663 (CB)05-08-1663 (CB)05-08-174205-08-174205-08-1663 (CB)05-08-1663 (CB)05-08-174205-08-174205-08-1663 (CB)05-08-1663 (CB)05-08-174205-08-174205-08-1663 (CB)05-08-1663 (CB)05-08-174205-08-1742
Pin Count20202020202020202020202020202020

Parametrics

Parameters / ModelsLTC3891EFE#PBFLTC3891EFE#TRPBFLTC3891EUDC#PBFLTC3891EUDC#TRPBFLTC3891HFE#PBFLTC3891HFE#TRPBFLTC3891HUDC#PBFLTC3891HUDC#TRPBFLTC3891IFE#PBFLTC3891IFE#TRPBFLTC3891IUDC#PBFLTC3891IUDC#TRPBFLTC3891MPFE#PBFLTC3891MPFE#TRPBFLTC3891MPUDC#PBFLTC3891MPUDC#TRPBF
ArchitectureConstant Frequency Current ModeConstant Frequency Current ModeConstant Frequency Current ModeConstant Frequency Current ModeConstant Frequency Current ModeConstant Frequency Current ModeConstant Frequency Current ModeConstant Frequency Current ModeConstant Frequency Current ModeConstant Frequency Current ModeConstant Frequency Current ModeConstant Frequency Current ModeConstant Frequency Current ModeConstant Frequency Current ModeConstant Frequency Current ModeConstant Frequency Current Mode
Demo BoardsDC1940A,DC1695BDC1940A,DC1695BDC1940A,DC1695BDC1940A,DC1695BDC1940A,DC1695BDC1940A,DC1695BDC1940A,DC1695BDC1940A,DC1695BDC1940A,DC1695BDC1940A,DC1695BDC1940A,DC1695BDC1940A,DC1695BDC1940A,DC1695BDC1940A,DC1695BDC1940A,DC1695BDC1940A,DC1695B
Design ToolsLTspice File,LTpowerCAD FileLTspice File,LTpowerCAD FileLTspice File,LTpowerCAD FileLTspice File,LTpowerCAD FileLTspice File,LTpowerCAD FileLTspice File,LTpowerCAD FileLTspice File,LTpowerCAD FileLTspice File,LTpowerCAD FileLTspice File,LTpowerCAD FileLTspice File,LTpowerCAD FileLTspice File,LTpowerCAD FileLTspice File,LTpowerCAD FileLTspice File,LTpowerCAD FileLTspice File,LTpowerCAD FileLTspice File,LTpowerCAD FileLTspice File,LTpowerCAD File
Export Controlnononononononononononononononono
FeaturesDCR Current Sense, Resistor Set Frequency, External Synchronization, Burst Mode, Power GoodDCR Current Sense, Resistor Set Frequency, External Synchronization, Burst Mode, Power GoodDCR Current Sense, Resistor Set Frequency, External Synchronization, Burst Mode, Power GoodDCR Current Sense, Resistor Set Frequency, External Synchronization, Burst Mode, Power GoodDCR Current Sense, Resistor Set Frequency, External Synchronization, Burst Mode, Power GoodDCR Current Sense, Resistor Set Frequency, External Synchronization, Burst Mode, Power GoodDCR Current Sense, Resistor Set Frequency, External Synchronization, Burst Mode, Power GoodDCR Current Sense, Resistor Set Frequency, External Synchronization, Burst Mode, Power GoodDCR Current Sense, Resistor Set Frequency, External Synchronization, Burst Mode, Power GoodDCR Current Sense, Resistor Set Frequency, External Synchronization, Burst Mode, Power GoodDCR Current Sense, Resistor Set Frequency, External Synchronization, Burst Mode, Power GoodDCR Current Sense, Resistor Set Frequency, External Synchronization, Burst Mode, Power GoodDCR Current Sense, Resistor Set Frequency, External Synchronization, Burst Mode, Power GoodDCR Current Sense, Resistor Set Frequency, External Synchronization, Burst Mode, Power GoodDCR Current Sense, Resistor Set Frequency, External Synchronization, Burst Mode, Power GoodDCR Current Sense, Resistor Set Frequency, External Synchronization, Burst Mode, Power Good
Frequency, kHz900900900900900900900900900900900900900900900900
Frequency Adjust Range50kHz - 900kHz50kHz - 900kHz50kHz - 900kHz50kHz - 900kHz50kHz - 900kHz50kHz - 900kHz50kHz - 900kHz50kHz - 900kHz50kHz - 900kHz50kHz - 900kHz50kHz - 900kHz50kHz - 900kHz50kHz - 900kHz50kHz - 900kHz50kHz - 900kHz50kHz - 900kHz
Frequency Sync Range75kHz - 750kHz75kHz - 750kHz75kHz - 750kHz75kHz - 750kHz75kHz - 750kHz75kHz - 750kHz75kHz - 750kHz75kHz - 750kHz75kHz - 750kHz75kHz - 750kHz75kHz - 750kHz75kHz - 750kHz75kHz - 750kHz75kHz - 750kHz75kHz - 750kHz75kHz - 750kHz
Integrated Inductornononononononononononononononono
Ishutdown, µA14141414141414141414141414141414
Isupply, mA0.050.050.050.050.050.050.050.050.050.050.050.050.050.050.050.05
Max Phases1111111111111111
Monolithicnononononononononononononononono
Number of Outputs1111111111111111
Operating Temperature Range, °C0 to 850 to 850 to 850 to 85-40 to 125-40 to 125-40 to 125-40 to 125-40 to 85-40 to 85-40 to 85-40 to 85-55 to 125-55 to 125-55 to 125-55 to 125
Output Current, A15151515151515151515151515151515
Polyphasenononononononononononononononono
Sense ResistorRsense, DCRRsense, DCRRsense, DCRRsense, DCRRsense, DCRRsense, DCRRsense, DCRRsense, DCRRsense, DCRRsense, DCRRsense, DCRRsense, DCRRsense, DCRRsense, DCRRsense, DCRRsense, DCR
Switch Current, A15151515151515151515151515151515
Synchronousyesyesyesyesyesyesyesyesyesyesyesyesyesyesyesyes
TopologyBuckBuckBuckBuckBuckBuckBuckBuckBuckBuckBuckBuckBuckBuckBuckBuck
Vin Max, V60606060606060606060606060606060
Vin Min, V4444444444444444
Vout Max, V24242424242424242424242424242424
Vout Maximum24V24V24V24V24V24V24V24V24V24V24V24V24V24V24V24V
Vout Min, V0.80.80.80.80.80.80.80.80.80.80.80.80.80.80.80.8
Vref Accuracy Over Temp, %1111111111111111

Eco Plan

LTC3891EFE#PBFLTC3891EFE#TRPBFLTC3891EUDC#PBFLTC3891EUDC#TRPBFLTC3891HFE#PBFLTC3891HFE#TRPBFLTC3891HUDC#PBFLTC3891HUDC#TRPBFLTC3891IFE#PBFLTC3891IFE#TRPBFLTC3891IUDC#PBFLTC3891IUDC#TRPBFLTC3891MPFE#PBFLTC3891MPFE#TRPBFLTC3891MPUDC#PBFLTC3891MPUDC#TRPBF
RoHSCompliantCompliantCompliantCompliantCompliantCompliantCompliantCompliantCompliantCompliantCompliantCompliantCompliantCompliantCompliantCompliant

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
    Extract from the document

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
    Extract from the document

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
EMS supplier