LTC3879

PRODUCTION

Fast, Wide Operating Range No RSENSE Step-Down Controller

Data Sheet Product Selection Table
Part Models
8
1ku List Price
Starting From $2.14
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Part Details

  • Wide VIN Range: 4V to 38V
  • ±1% 0.6V Voltage Reference
  • Extremely Fast Transient Response
  • tON(MIN): 43ns
  • No RSENSE™ Valley Current Mode Control
  • Stable with Low ESR Ceramic COUT
  • Supports Smooth Start-Up in Pre-Biased Output
  • Optimized for High Step-Down Ratios
  • Adjustable Output Voltage Soft-Start or Tracking
  • Power Good Output Voltage Monitor
  • Dual N-Channel MOSFET Synchronous Drive
  • Adjustable Switching Frequency
  • Programmable Current Limit with Foldback
  • Output Overvoltage Protection
  • 16-Pin MSOP and 3mm × 3mm QFN Packages
LTC3879
Fast, Wide Operating Range No RSENSE Step-Down Controller
High Efficiency Step-Down Converter Efficiency vs Load Current Product Package 1 Product Package 2
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Documentation

Data Sheet 1

Reliability Data 1

User Guide 2

Technical Articles 1

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
LTC2974
RECOMMENDED FOR NEW DESIGNS 4-Channel PMBus Power System Manager Featuring Accurate Output Current Measurement
Dual-Supply Monitors 1
LTC2960
RECOMMENDED FOR NEW DESIGNS 36V Nano-Current Two-Input Voltage Monitor
Multiple Output Buck Regulators 1
LTC3880
RECOMMENDED FOR NEW DESIGNS Dual Output PolyPhase Step-Down DC/DC Controller with Digital Power System Management
Surge Stopper, Overvoltage, and Overcurrent Protection 1
LT4363
RECOMMENDED FOR NEW DESIGNS High Voltage Surge Stopper with Current Limit
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Tools & Simulations

LTspice 2

Models for the following parts are available in LTspice:

  • LTC3879
LTspice

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.

Evaluation Kits

eval board
schematic 1
DC1345A

LTC3879EMSE Demo Board | 4.5V ≤ VIN ≤ 34, VOUT = 1.2V @ 12A

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Product Details

Demonstration circuit 1345 is a wide input voltage range, no Rsense step-down dc/dc converter featuring the LTC3879EMSE. Its output voltage is 1.2V with a load rating of 12A and the input voltage range is 4.5V to 34V.



eval board
schematic 2
DC1289A

LTC3879EUD Demo Board | No RSENSE, 4.5V ≤ VIN ≤ 14V, VOUT = 1.2V @ 15A

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Product Details

Demonstration circuit 1289 is a no RSENSE synchronous step-down DC/DC converter featuring the LTC3879EUD. Its output supplies 1.2V @ 15A and its input voltage range is from 4.5V to 14V.


The LTC3879 allows operation from 4V to 38V at the input and has an output voltage range of 0.6V to 0.9VIN.


 
DC1345A
LTC3879EMSE Demo Board | 4.5V ≤ VIN ≤ 34, VOUT = 1.2V @ 12A
DC1345A - Schematic
DC1289A
LTC3879EUD Demo Board | No RSENSE, 4.5V ≤ VIN ≤ 14V, VOUT = 1.2V @ 15A
DC1289A - Schematic

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