Overview

Features and Benefits

  • Dual Input, Single Output DC/DCs with Input Prioritizer
    • Energy Harvesting Input: 3.0V to 19V Buck DC/DC
    • Primary Cell Input: 1.8V to 5.5V Buck-Boost DC/DC
  • Zero Battery IQ When Energy Harvesting Source is Available
  • Ultralow Quiescent Current: 750nA at No-Load
  • Low Noise LDO Post Regulator
  • Integrated Supercapacitor Balancer
  • Up to 50mA of Output Current
  • Programmable DC/DC and LDO Output Voltages, Buck UVLO, and Buck-Boost Peak Input Current
  • Integrated Low Loss Full-Wave Bridge Rectifier
  • Input Protective Shunt: Up to 25mA at VIN ≥ 20V
  • 5mm × 5mm QFN-32 Package

Product Details

The LTC3330 integrates a high voltage energy harvesting power supply plus a DC/DC converter powered by a primary cell battery to create a single output supply for alternative energy applications. The energy harvesting power supply, consisting of an integrated full-wave bridge rectifier and a high voltage buck converter, harvests energy from piezoelectric, solar, or magnetic sources. The primary cell input powers a buck-boost converter capable of operation down to 1.8V at its input. Either DC/DC converter can deliver energy to a single output. The buck operates when harvested energy is available, reducing the quiescent current draw on the battery to essentially zero, thereby extending the life of the battery. The buck-boost powers VOUT only when harvested energy goes away.

A low noise LDO post regulator and a supercapacitor balancer are also integrated, accommodating a wide range of output storage configurations. Voltage and current settings for both inputs and outputs are programmable via pin-strapped logic inputs. The LTC3330 is available in a 5mm × 5mm QFN-32 package.

Applications

  • Energy Harvesting
  • Solar Powered Systems with Primary Cell Backup
  • Wireless HVAC Sensors and Security Devices
  • Mobile Asset Tracking

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 (3)

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:

LTC3330

Product Recommendations

LTC3330 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.

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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.