LTC3877

RECOMMENDED FOR NEW DESIGNS

Dual Phase Step-Down Synchronous Controller with VID Output Voltage Programming and Low Value DCR Sensing

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    Part Details

    • 6-Bit Parallel VID (Voltage Identification) Inputs Set Output Voltage from 0.6V to 1.23V in 10mV Steps
    • Output Voltage Range: 0.6V to 5V (Without VID)
    • Ultra Low Value DCR/RSENSE Current Sensing
    • ±1% Maximum Total Regulation Voltage Accuracy Over Temperature
    • Dual Differential Remote Sensing Amplifiers
    • tON(MIN) = 40ns, Capable of Very Low Duty Cycles at High Frequency
    • Phase-Lockable Frequency from 250kHz to 1MHz
    • Current Mismatch Between Channels: 5% Max
    • Adjustable Soft-Start Current Ramping or Tracking
    • Multi-IC Operation Up To 12 Phases
    • Wide VIN Range: 4.5V to 38V
    • Dual Power Good Output Voltage Monitors
    • Output Overvoltage Protection
    • Foldback Output Current Limiting and Soft Recovery
    LTC3877
    Dual Phase Step-Down Synchronous Controller with VID Output Voltage Programming and Low Value DCR Sensing
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    Documentation

    Data Sheet 1

    Reliability Data 1

    User Guide 1

    Design Note 2

    Technical Articles 3

    Data Sheet

    This is the most up-to-date revision of the Data Sheet.

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    Software Resources

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    Hardware Ecosystem

    Parts Product Life Cycle Description
    Digital Power System Managers 1
    LTC2980
    		RECOMMENDED FOR NEW DESIGNS 16-Channel PMBus Power System Manager
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    Evaluation Kits

    eval board
    schematic 1
    DC2229A-B

    LTC3877/LTC3874 Demo Board | 4-Phase Buck Controller with VID Inputs, Sub-mΩ DCR Sensing, 6V ≤ VIN ≤ 14V, VOUT = 0.6V to 1.23V at 120A

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    Product Details

    Demonstration circuits 2229A-A and 2229A-B feature the LTC3877 in two high output current, high efficiency, VID programmed step-down converters with sub-mΩ DCR sensing. For both converters, the input voltage range is 6V to 14V and the switching frequency is 400kHz.

    eval board
    schematic 2
    DC2229A-A

    LTC3877 Demo Board | Dual Buck Controller, Sub-mΩ DCR Sensing, 6V ≤ VIN ≤ 14V, VOUT1 is VID Programmable from 0.6V to 1.23V @ 30A, VOUT2 is 1.5V @ 30A

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    Product Details

    Demonstration circuits 2229A-A and 2229A-B feature the LTC3877 in two high output current, high efficiency, VID programmed step-down converters with sub-mΩ DCR sensing. For both converters, the input voltage range is 6V to 14V and the switching frequency is 400kHz.
    DC2229A-B
    LTC3877/LTC3874 Demo Board | 4-Phase Buck Controller with VID Inputs, Sub-mΩ DCR Sensing, 6V ≤ VIN ≤ 14V, VOUT = 0.6V to 1.23V at 120A
    DC2229A-A
    LTC3877 Demo Board | Dual Buck Controller, Sub-mΩ DCR Sensing, 6V ≤ VIN ≤ 14V, VOUT1 is VID Programmable from 0.6V to 1.23V @ 30A, VOUT2 is 1.5V @ 30A

    Reference Designs

    Arria 10 (Rev E3- Linear Technology) Dev Kit
    Arria 10 (Rev E3- Linear Technology) Dev Kit
    Arria 10 FPGA Development Kit (Power Tree Representative of Actual Components Used on Board)
    Simplied Power Tree that directly steps down 12V to required I/O voltage
    Arria 10 (Rev E3- Linear Technology) Dev Kit Block Diagram
    Altera Arria 10 FPGA Development Kit Circuits from the lab

    View Detailed Reference Design

    Features and Benefits

    • Analog Devices has worked closely with FPGA and processor manufacturers to develop verified power solutions that optimize cost, size and efficiency in high performance applications
    • Our reference designs are supported by an intuitive design tool set and IP
    • Our team can provide designs for quick prototypes that can speed time to market in the most complex applications
    Altera Arria 10 FPGA Development Kit

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