Nisshinbo Micro Devices R1801

The R1801 is a power-storing buck DC/DC converter designed for use with a photovoltaic and piezoelectric energy harvester. Its purpose is to efficiently convert and regulate the harvested energy from these sources into a usable form for powering small independent operating electronic devices.

Key features

• Convenient solution to connect an energy harvesting cell and energy storage device
• With adjustable maximum power point control
• With power good output
• With reverse current protection

Additional features

• Input voltage range: 2.3 V to 5.5 V
• Output voltage range: 2.3 V to 4.5 V
• Maximum power point control voltage range: 2.7 V to 5.3 V
• Output voltage accuracy: ± 3.0%
• Operating quiescent current: typ. 200 nA (Ta =25°C, at no load) under condition of V_IN = 4 V, V_OUT = 3.0 V
• Starting power: 1 µW (V_IN = 4 V, V_OUT = 3.0 V)
• Reverse current protection (V_IN ≥ 2.0 V)
• Adjustable maximum power point control, adjustable output voltage
• Power good function

Applications

• Energy harvesting
• Wireless operating temperature sensor