LTC3874-1

RECOMMENDED FOR NEW DESIGNS

PolyPhase Step-Down Synchronous Slave Controller with Sub-Milliohm DCR Sensing

Data Sheet Product Selection Table

Part Models: 4
1ku List Price: Starting From $2.97

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Part Details

Phase Extender for High Phase Count Voltage Rails
Operates with Power Blocks, DrMOS or External Gate Drivers and MOSFETs
Accurate Phase-to-Phase Current Sharing
Sub-Milliohm DCR Current Sensing
Phase-Lockable Fixed Frequency 250kHz to 1MHz
Immediate Response to Master IC's Fault
Up to 12-Phase Operation
Wide V_IN Range: 4.5 to 38V
V_OUT Range :
- Up to 3.5V (LOWDCR Pin High)
- Up to 5.5V (LOWDCR Pin Low)
Proprietary Current Mode Control Loop
Programmable CCM/DCM Operation
Programmable Phase Shift Control n 24-Lead (4mm × 4mm) QFN Package

Part Models: 4
1ku List Price: Starting From $2.97

Documentation

Data Sheet 1

LTC3874-1: PolyPhase Step-Down Synchronous Slave Controller with Sub-Milliohm DCR Sensing Data Sheet 09/24/2017

Reliability Data 1

R526 Reliability Data 03/26/2018

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
LTC3874EUF-1#PBF	24-Lead QFN (4mm x 4mm x 0.75mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3874EUF-1#TRPBF	24-Lead QFN (4mm x 4mm x 0.75mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3874IUF-1#PBF	24-Lead QFN (4mm x 4mm x 0.75mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3874IUF-1#TRPBF	24-Lead QFN (4mm x 4mm x 0.75mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys

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
LTC2975	RECOMMENDED FOR NEW DESIGNS	4-Channel PMBus Power System Manager Featuring Accurate Input Current and Energy Measurement

Tools & Simulations

LTspice

Models for the following parts are available in LTspice:

LTC3874
LTC3874-1

LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.

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