Datasheet Linear Technology LTC3871

ManufacturerLinear Technology
SeriesLTC3871

Bidirectional PolyPhase Synchronous Buck or Boost Controller

Datasheets

LTC3871: Bidirectional PolyPhase® Synchronous Buck or Boost Controller Data Sheet
PDF, 1.4 Mb, File uploaded: Sep 24, 2017
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Prices

Packaging

LTC3871ELXE#PBFLTC3871HLXE#PBFLTC3871ILXE#PBF
N123
Package7mm x 7mm LQFP-48
Package Outline Drawing
7mm x 7mm LQFP-48
Package Outline Drawing
7mm x 7mm LQFP-48
Package Outline Drawing
Package CodeLXELXELXE
Package Index05-08-183205-08-183205-08-1832
Pin Count484848

Parametrics

Parameters / ModelsLTC3871ELXE#PBFLTC3871HLXE#PBFLTC3871ILXE#PBF
ArchitectureConstant Frequency Current ModeConstant Frequency Current ModeConstant Frequency Current Mode
Demo BoardsDC2348A-A,DC2348A-BDC2348A-A,DC2348A-BDC2348A-A,DC2348A-B
Design ToolsLTspice Model,LTpowerCAD FileLTspice Model,LTpowerCAD FileLTspice Model,LTpowerCAD File
Export Controlnonono
FeaturesBidirectional, Output Current Monitor, External Synchronization, Resistor Set Frequency, PolyPhaseBidirectional, Output Current Monitor, External Synchronization, Resistor Set Frequency, PolyPhaseBidirectional, Output Current Monitor, External Synchronization, Resistor Set Frequency, PolyPhase
Frequency, kHz500500500
Frequency Adjust Range50kHz to 500kHz50kHz to 500kHz50kHz to 500kHz
Frequency Sync Range60kHz to 460kHz60kHz to 460kHz60kHz to 460kHz
Integrated Inductornonono
Ishutdown, µA140140140
Isupply, mA888
Max Phases121212
Monolithicnonono
Number of Outputs111
Operating Temperature Range, °C0 to 85-40 to 125-40 to 85
Output Current, A303030
Polyphaseyesyesyes
Sense ResistorRsense, DCRRsense, DCRRsense, DCR
Switch Current, A303030
Synchronousyesyesyes
TopologyBuck, BoostBuck, BoostBuck, Boost
Topology 1Buck, BoostBuck, BoostBuck, Boost
Vin Max, V100100100
Vin Min, V1.21.21.2
Vout Max, V100100100
Vout Maximum100100100
Vout Min, V1.21.21.2
Vref Accuracy Over Temp, %111

Eco Plan

LTC3871ELXE#PBFLTC3871HLXE#PBFLTC3871ILXE#PBF
RoHSCompliantCompliantCompliant

Model Line

Manufacturer's Classification

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