Datasheet Analog Devices LTC3108-1 — Datenblatt

LTC3108-1
Ultralow Voltage Step-Up
Converter and Power Manager
Features Description Operates from Inputs of 20mV
n Complete Energy Harvesting Power
Management System -Selectable VOUT of 2.5V, 3V, 3.7V or 4.5V -LDO: 2.2V at 3mA -Logic Controlled Output -Reserve Energy Output
n Power Good Indicator
n Uses Compact Step-Up Transformers
n Small 12-Lead (3mm × 4mm) DFN or 16-Lead
SSOP Packages The LTC®3108-1 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. n Using a small step-up transformer, the LTC3108-1 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 …