Alternative Parts

  • LTC3374A
    LTC3374A

    High Accuracy 8-Channel Parallelable 1A Buck DC/DCs

  • LTC3375
    LTC3375

    8-Channel Programmable, Parallelable 1A Buck DC/DCs

Overview

Features and Benefits

  • 8-Channel Independent Step-Down DC/DCs
  • Master-Slave Configurable for Up to 4A per Output Rail with a Single Inductor
  • Independent VIN Supplies for Each DC/DC (2.25V to 5.5V)
  • All DC/DCs Have 0.8V to VIN Output Range
  • Precision Enable Pin Thresholds for Autonomous Sequencing
  • 1MHz to 3MHz Programmable/Synchronizable Oscillator Frequency (2MHz Default)
  • Die Temperature Monitor Output
  • Thermally Enhanced 38-Lead QFN (5mm × 7mm) and TSSOP Packages

Product Details

The LTC3374 is a high efficiency multioutput power supply IC. The DC/DCs consist of eight synchronous buck converters (1A each) all powered from independent 2.25V to 5.5V input supplies.

The DC/DCs may be used independently or in parallel to achieve higher currents of up to 4A per output with a shared inductor. The common buck switching frequency may be programmed with an external resistor, synchronized to an external oscillator, or set to a default internal 2MHz clock. The operating mode for all DC/DCs may be programmed via the MODE pin.

To reduce input noise the buck converters are phased in 90° steps. Precision enable pin thresholds provide reliable power-up sequencing. The LTC3374 is available in a compact 38-lead 5mm × 7mm QFN package as well as a 38-lead TSSOP package.


NOTES
LTC3374  
LTC3374A Higher efficiency, improved output voltage accuracy and an added overvoltage (OV) indicator

Applications

  • General Purpose Multichannel Power Supplies
  • Industrial/Automotive/Communications

Product Lifecycle icon-recommended Production

At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.

Evaluation Kits (1)

Tools & Simulations

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.

LTspice

Models for the following parts are available in LTspice:

LTC3374
LTC3374A

Product Recommendations

LTC3374 Companion Parts

Recommended Related Parts

Design Resources

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.

Discussions

LTC3374 Discussions

RE: LTC3372
17 week(s) ago in Power By Linear
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The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.


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Evaluation Boards Pricing displayed is based on 1-piece.
Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.