LTC3588-1

FEATURES nn 950nA Input Quiescent Current (Output in Regulation – No Load) nn 450nA Input Quiescent Current in UVLO nn 2.7V to 20V Input Operating Range nn Integrated Low-Loss Full-Wave Bridge Rectifier nn Up to 100mA of Output Current nn Selectable Output Voltages of 1.8V, 2.5V, 3.3V, 3.6V nn High Efficiency Integrated Hysteretic Buck DC/DC nn Input Protective Shunt – Up to 25mA Pull-Down at VIN ≥ 20V nn Wide Input Undervoltage Lockout (UVLO) Range nn Available in 10-Lead MSE and 3mm × 3mm DFN Packages APPLICATIONS nn Piezoelectric Energy Harvesting nn Electro-Mechanical Energy Harvesting nn Wireless HVAC Sensors nn Mobile Asset Tracking nn Tire Pressure Sensors nn Battery Replacement for Industrial Sensors nn Remote Light Switches nn Standalone Nanopower Buck Regulator LTC3588-1 Nanopower Energy Harvesting Power Supply DESCRIPTION The LTC®3588-1 integrates a low-loss full-wave bridge rectifier with a high efficiency buck converter to form a complete energy harvesting solution optimized for high output impedance energy sources such as piezoelectric, solar, or magnetic transducers. An ultralow quiescent current undervoltage lockout (UVLO) mode with a wide hysteresis window allows charge to accumulate on an input capacitor until the buck converter can efficiently transfer a portion of the stored charge to the output. In regulation, the LTC3588-1 enters a sleep state in which both input and output quiescent currents are minimal. The buck converter turns on and off as needed to...