DC1582B-B

DC1582B-B is a demonstration circuit featuring the LTC3108 ultralow voltage step-up converter and power manager. It is optimized for harvesting and managing energy from extremely low input voltage sources such as thermoelectric generators (TEG). The step-up topology operates from input voltages as low as 20mV. The DC 1582B has been optimized for low start-up voltage with a 100:1 turns ratio transformer. For applications where it is desirable to trade-off a higher start-up voltage for higher current, a lower turns ratio transformer can be used. The demonstration circuit has been set up with storage capacitor that makes it easy to evaluate general functionality of circuits. The lower value capacitor allows for fast charge time but limits pulsed energy that can be drawn from it. Space is provided, and alternate part footprints have been built into PCB to allow experimentation with larger capacitors for more energy storage. In a typical application, larger output capacitors may be used.

• Demonstration circuit for LTC3108 energy harvesting evaluation
• Optimized for thermoelectric generator energy sources
• Input voltage range from 50mV to 400mV (Typical no load start-up = 20mV)
• Jumper-selectable VOUT from 2.35V to 5.0V
• 5.25V VSTORE