LTC3877

RECOMMENDED FOR NEW DESIGNS

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

Data Sheet Product Selection Table

Part Models: 4
1ku List Price: Starting From $4.71

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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/R_SENSE Current Sensing
±1% Maximum Total Regulation Voltage Accuracy Over Temperature
Dual Differential Remote Sensing Amplifiers
t_ON(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 V_IN Range: 4.5V to 38V
Dual Power Good Output Voltage Monitors
Output Overvoltage Protection
Foldback Output Current Limiting and Soft Recovery

Part Models: 4
1ku List Price: Starting From $4.71

Documentation

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.

Part Model	Pin/Package Drawing	Documentation	CAD Symbols, Footprints, and 3D Models
LTC3877EUK#PBF	44-Lead QFN (7mm x 7mm x 0.75mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3877EUK#TRPBF	44-Lead QFN (7mm x 7mm x 0.75mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3877IUK#PBF	44-Lead QFN (7mm x 7mm x 0.75mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3877IUK#TRPBF	44-Lead QFN (7mm x 7mm x 0.75mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN

Feb 14, 2025 - 25_0016 Bond Wire Change from Gold to Copper Wire (Notification Only)
		PCN25_0016_Form Material_Report Qualification Results Summary
LTC3877EUK#PBF	PRODUCTION
LTC3877EUK#TRPBF	PRODUCTION
LTC3877IUK#PBF	PRODUCTION
LTC3877IUK#TRPBF	PRODUCTION

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

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

Evaluation Kits

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.

Resources

DC2229A - Design Files
2.00M

DC2229A - Demo Manual
1.00M

DC2229A-B - Schematic
110.00K

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

Resources

DC2229A - Design Files
2.00M

DC2229A - Demo Manual
1.00M

DC2229A-A - Schematic
110.00K

Reference Designs

Arria 10 (Rev E3- Linear Technology) Dev Kit

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