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


  • 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


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.


CAD Symbols and Footprints: The downloadable Zip file below contains the schematic symbol and PCB footprints.

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

Part Number Package Code Temp Package
LTC3330EUH#PBF 5x5 QFN-32 UH E 05-08-1693 Yes
LTC3330EUH#TRPBF 5x5 QFN-32 UH E 05-08-1693 Yes
LTC3330IUH#PBF 5x5 QFN-32 UH I 05-08-1693 Yes
LTC3330IUH#TRPBF 5x5 QFN-32 UH I 05-08-1693 Yes

LTC3330 Package Drawing

Order Info

  • Part numbers ending in PBF are lead free. Solder plated terminal finish (SnPb) versions are non-standard and special terms and conditions and pricing applies if available. Please contact LTC marketing for information.
  • Part numbers containing TR or TRM are shipped in tape and reel or 500 unit mini tape and reel, respectively
  • Please refer to our general ordering information or the product datasheet for more details

Package Variations and Pricing

Part Number Package Temp Price
LTC3330EUH#PBF 5x5 QFN-32 E $5.07 $3.55 Yes
LTC3330EUH#TRPBF 5x5 QFN-32 E $3.61 Yes
LTC3330IUH#PBF 5x5 QFN-32 I $5.57 $3.90 Yes
LTC3330IUH#TRPBF 5x5 QFN-32 I $3.96 Yes
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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
DC2126A High-Accuracy Wireless Temperature Sensor with Solar Battery Life Extender $175.00
DC2321A Dust Energy Harvesting Demo Board with E-Ink Display, designed to connect to the DC2344A or DC2509A $150.00
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Companion Boards

Part Number Description Price Documentation
DC9006A Eterna Interface Card $100.00
DC9010B Eterna Serial Programmer $399.00
DC9021B SmartMesh IP Starter Kit $750.00
DC2274A-A SmartMesh IP USB Network Manager, 100 mote capacity $125.00
DC2344A Gleanergy Multi-Source Energy Harvesting Demo Board with Battery Chargers and Life-Extenders for Use with DC2321A Dust Demo Board Contact Factory
DC2509A Gleanergy Multi-Source E H Demo Board with Battery Chargers and Life-Extenders for Use with DC2321A Dust Demo Board $175.00
DC2510A Shield Board for use with DC2321A Dust Demo Board $75.00
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Click here to view our complete list of demo boards


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

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