LTC3107
Ultra-Low Voltage
Energy Harvester and
Primary Battery Life Extender
Description Features Thermal Energy Harvesting Assisted Power
Management System n V
OUT Tracks the Primary Battery Voltage n 2.2V LDO Output n Reserve Energy Output, Clamped to 4.3V
n Operates from Inputs as Low as 20mV
n Battery In-Use Indicator (BAT_OFF)
n I from Battery:
Q n 80nA When Energy Harvesting n 6µA No Energy Harvesting
n Standard, Compact Step-Up Transformer
n Small, Thermally Enhanced 10-lead (3mm × 3mm)
DFN package 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. n 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 …