LTC3108 - Ultralow Voltage Step-Up Converter and Power Manager

The LTC®3108 is a highly integrated DC/DC converter ideal for harvesting and managing surplus energy from extremely low input voltage sources such as TEGs (thermoelectric generators), thermopiles and small solar cells. The step-up topology operates from input voltages as low as 20mV. The LTC3108 is functionally equivalent to the LTC3108-1 except for its unique fixed VOUT options.

Using a small step-up transformer, the LTC3108 provides a complete power management solution for wireless sensing and data acquisition. The 2.2V LDO powers an external microprocessor, while the main output is programmed to one of four fixed voltages to power a wireless transmitter or sensors. The power good indicator signals that the main output voltage is within regulation. A second output can be enabled by the host. A storage capacitor provides power when the input voltage source is unavailable. Extremely low quiescent current and high efficiency design ensure the fastest possible charge times of the output reservoir capacitor.

The LTC3108 is available in a small, thermally enhanced 12-lead (3mm × 4mm) DFN package and a 16-lead SSOP package.

Features
  • Operates from Inputs of 20mV
  • Complete Energy Harvesting Power
  • Management System - Selectable VOUT of 2.35V, 3.3V, 4.1V or 5V - LDO: 2.2V at 3mA - Logic Controlled Output - Reserve Energy Output
  • Power Good Indicator
  • Uses Compact Step-Up Transformers
  • Small 12-Lead (3mm × 4mm) DFN or 16-Lead SSOP Packages
Typical Application

Applications
  • Remote Sensors and Radio Power
  • Surplus Heat Energy Harvesting
  • HVAC Systems
  • Industrial Wireless Sensing
  • Automatic Metering
  • Building Automation
  • Predictive Maintenance
Packaging

Order Information
Part NumberPackageTempPrice(1-99)Price (1k)*
LTC3108EDE#PBF4x3 DFN-12E$4.22$2.95
LTC3108EDE#TRPBF4x3 DFN-12E$3.01
LTC3108EGN#PBFSSOP-16E$4.22$2.95
LTC3108EGN#TRPBFSSOP-16E$3.01
LTC3108IDE#PBF4x3 DFN-12I$4.93$3.45
LTC3108IDE#TRPBF4x3 DFN-12I$3.51
LTC3108IGN#PBFSSOP-16I$4.93$3.45
LTC3108IGN#TRPBFSSOP-16I$3.51
Demo Boards
Part NumberDescriptionPrice
DC1582B-ALTC3108EDE Demo Board | Ultralow Voltage Step-Up Converter and Power Manager$150.00
DC2042AENERGY HARVESTING (EH) MULTI-SOURCE DEMOBOARD$200.00
DC2080AEnergy Harvesting (EH) Multi-Source Demo Board with TransducersContact Factory
Datasheet
Reliability Data
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