LTC3107 - Ultra-Low Voltage Energy Harvester and Primary Battery Life Extender

Features

  • Thermal Energy Harvesting Assisted Power Management System
  • VOUT Tracks the Primary Battery Voltage
  • 2.2V LDO Output
  • Reserve Energy Output, Clamped to 4.3V
  • Operates from Inputs as Low as 20mV
  • Battery In-Use Indicator (BAT_OFF)
  • IQ from Battery:
    80nA When Energy Harvesting

    6μA No Energy Harvesting
  • Standard, Compact Step-Up Transformer
  • Small, Thermally Enhanced 10-lead (3mm × 3mm) DFN package

Typical Application

LTC3107 Typical Application
LTC3107 Typical Application

Description

The LTC®3107 is a highly integrated DC/DC converter designed to extend the life of a primary battery in low power wireless systems by harvesting and managing surplus energy from extremely low input voltage sources such as TEGs (Thermoelectric Generators) and thermopiles. The step-up topology operates from input voltages as low as 20mV.

Using a small step-up transformer, the LTC3107 provides a complete power management solution for typical wireless sensor applications that operate from a primary battery. The 2.2V LDO can be used to power an external microprocessor, while the main output voltage automatically adapts to match the voltage of the primary battery. The LTC3107 seamlessly transitions from battery power to harvested power whenever harvested energy is available, extending the life of the battery. The BAT_OFF indicator can be used to track battery usage. An optional storage capacitor accumulates excess harvested energy, further extending battery life.

The LTC3107 is available in a small, thermally enhanced 10-lead (3mm × 3mm) DFN package.

Packaging

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

DFN-10

LTC3107 Package Drawing

Order Info

Package Variations and Pricing

Part Number Package Pins Temp Price (1-99) Price (1k)* RoHS Data
LTC3107EDD#PBF DFN 10 E $4.22 $2.95 View
LTC3107EDD#TRPBF DFN 10 E $3.01 View
LTC3107IDD#PBF DFN 10 I $4.93 $3.45 View
LTC3107IDD#TRPBF DFN 10 I $3.51 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
DC2103A LTC3107 Demo Board | 20mV start-up Energy Harvester and Battery Life Extender Contact Factory
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Click here to view our complete list of demo boards

Applications

  • Industrial Wireless Sensing
  • Remote Sensor and Radio power
  • HVAC
  • Automatic Metering
  • Building Automation, Security
  • Predictive Maintenance, Condition Monitoring

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Design Tools

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