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 Models
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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
High Efficiency Dual Phase Single Output, 400kHz, 0.9V/60A Step-Down Converter Efficiency and Power Loss vs Load Current Product Package 1
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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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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 - Schematic
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
DC2229A-A - Schematic

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
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

Latest Discussions

2 Years Ago
RE: LTC3877EUK#PBF Power good signal is not stable
3 Years Ago
RE: LTC3877
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