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Datasheet Linear Technology LTC3861-1

ManufacturerLinear Technology
SeriesLTC3861-1

Dual, Multiphase Step-Down Voltage Mode DC/DC Controller with Accurate Current Sharing

Datasheets

  • Download » Datasheet, PDF, 1.3 Mb, Revision: B
    LTC3861-1 - Dual, Multiphase Step-Down Voltage Mode DC/DC Controller with Accurate Current Sharing
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    LTC3861-1
    Dual, Multiphase Step-Down
    Voltage Mode DC/DC Controller
    with Accurate Current Sharing
    Description Features Operates with Power Blocks, DrMOS or External
    Gate Drivers and MOSFETs
    n Constant-Frequency Voltage Mode Control with
    Accurate Current Sharing
    n ±0.75% 0.6V Voltage Reference
    n Differential Remote Output Voltage Sense Amplifier
    n Multiphase Capability—Up to 12-Phase Operatio Programmable Current Limit
    n Safely Powers a Prebiased Load
    n Programmable or PLL-Synchronizable Switching
    Frequency Up to 2.25MHz
    n Lossless Current Sensing Using Inductor DCR or
    Precision Current Sensing with Sense Resistor
    n V
    CC Range: 3V to 5.5V
    n V Range: 3V to 24V
    IN
    n Power Good Output Voltage Monitor
    n Output Voltage Tracking Capability
    n Programmable Soft-Start ...

Prices

Packaging

LTC3861EUH-1#PBFLTC3861EUH-1#TRPBFLTC3861IUH-1#PBFLTC3861IUH-1#TRPBF
Package5x5 QFN-325x5 QFN-325x5 QFN-325x5 QFN-32
Package CodeUHUHUHUH

Parametrics

LTC3861EUH-1#PBFLTC3861EUH-1#TRPBFLTC3861IUH-1#PBFLTC3861IUH-1#TRPBF
ArchitectureConstant Frequency Voltage ModeConstant Frequency Voltage ModeConstant Frequency Voltage ModeConstant Frequency Voltage Mode
Design ToolsLTspice Model,LTpowerCAD ModelLTspice Model,LTpowerCAD ModelLTspice Model,LTpowerCAD ModelLTspice Model,LTpowerCAD Model
Export Control, yes/nonononono
FeaturesPolyPhase, External Synchronization, Resistor Set Frequency, DCR Current Sense, Power Good, Tracking, Soft StartPolyPhase, External Synchronization, Resistor Set Frequency, DCR Current Sense, Power Good, Tracking, Soft StartPolyPhase, External Synchronization, Resistor Set Frequency, DCR Current Sense, Power Good, Tracking, Soft StartPolyPhase, External Synchronization, Resistor Set Frequency, DCR Current Sense, Power Good, Tracking, Soft Start
Frequency, kHz2250225022502250
Frequency Adjust RangeUp to 2.25MHzUp to 2.25MHzUp to 2.25MHzUp to 2.25MHz
Frequency Sync RangeUp to 2.25MHzUp to 2.25MHzUp to 2.25MHzUp to 2.25MHz
Integrated Inductor, yes/nonononono
Ishutdown, µA50505050
Isupply, mA30303030
Max Phases2, 3, 4, 6, 122, 3, 4, 6, 122, 3, 4, 6, 122, 3, 4, 6, 12
Monolithic, yes/nonononono
Number of Outputs2222
Operating Temperature Range, °C0 to 850 to 85-40 to 85-40 to 85
Output Current, A40404040
Output Current 2, A40404040
Polyphase, yes/noyesyesyesyes
Sense ResistorRsense, DCRRsense, DCRRsense, DCRRsense, DCR
Switch Current, A40404040
Switch Current 2, A40404040
Synchronous, yes/noyesyesyesyes
TopologyBuckBuckBuckBuck
Topology 1BuckBuckBuckBuck
Topology 2BuckBuckBuckBuck
Vin Max, V24242424
Vin Min, V3333
Vout Max, V5.55.55.55.5
Vout Maximum5.5V5.5V5.5V5.5V
Vout Min, V0.60.60.60.6
Vref Accuracy Over Temp, %0.750.750.750.75

Eco Plan

Moldel Line

Series: LTC3861-1 (4)

Manufacturer's Classification

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

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