LTC3330 - Nanopower Buck-Boost DC/DC with Energy Harvesting Battery Life Extender

Features

  • 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

Typical Application

LTC3330 Typical Application
LTC3330 Typical Application

Description

The LTC®3330 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.

Packaging

For complete and up to date package information and drawings, please refer to our packaging page

QFN-32

LTC3330 Package Drawing

Order Info

Package Variations and Pricing

Part Number Package Pins Temp Price (1-99) Price (1k)* RoHS Data
LTC3330EUH#PBF QFN 32 E $5.07 $3.55 View
LTC3330EUH#TRPBF QFN 32 E $3.61 View
LTC3330IUH#PBF QFN 32 I $5.57 $3.90 View
LTC3330IUH#TRPBF QFN 32 I $3.96 View
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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 Linear Technology sales office or authorized distributor.

Demo Boards

Linear Technology offers many demo boards free of charge to qualified customers. Contact your local sales office or distributor to inquire about a demo board. Certain demo boards are also available for sale via credit card on this website. Demo boards are for evaluation purposes only. It remains the customer’s responsibility to verify proper and reliable operation in the actual end application.

Part Number Description Price Documentation
DC2048A LTC3330EUH Nanopower Buck-Boost DC/DC with Energy Harvesting Battery Life Extender. $200.00
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Applications

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

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Design Tools

LTspiceIV

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Models for the following parts are available in LTspice IV:
LTC3330

Technical Support