Alternative Parts

  • LTC3374
    LTC3374

    8-Channel Parallelable 1A Buck DC/DCs

  • LTC3375
    LTC3375

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

Overview

Features and Benefits

  • 8-Channel 1A Independent Step-Down DC/DCs
  • Master-Slave Configurable for Up to 4A of Output Current 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
  • ±1% VFB Accuracy, for Buck 1 (1A to 4A)
  • ±1% PGOOD Accuracy
  • Precision Enable Pin Thresholds for Autonomous Sequencing
  • 1MHz to 3MHz Programmable/Synchronizable Oscillator Frequency (2MHz Default)
  • Die Temperature Monitor Output
  • Thermally Enhanced 38-Lead 5mm × 7mm QFN and TSSOP Packages
  • Pin-Compatible with LTC3374

Product Details

The LTC3374A is a multioutput power supply IC consisting of eight synchronous 1A buck converters, all powered from independent 2.25V to 5.5V input supplies. An upgraded pin-compatible version of the LTC3374, the LTC3374A, has higher efficiency, improved output voltage accuracy and an added overvoltage (OV) indicator.

The DC/DCs may be used independently or in parallel to achieve higher output currents of up to 4A 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 simplify powerup sequencing. The LTC3374A is available in a 38-lead 5mm × 7mm QFN package as well as a 38-lead exposed pad 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)

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Product Recommendations

LTC3374A Companion Parts

Recommended Related Parts

Design Resources

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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.