LTC3588-1 Nanopower Energy Harvesting Power Supply FEATURESDESCRIPTION n 950nA Input Quiescent Current (Output in The LTC®3588-1 integrates a low-loss full-wave bridge Regulation – No Load) rectifier with a high efficiency buck converter to form a n 450nA Input Quiescent Current in UVLO complete energy harvesting solution optimized for high n 2.7V to 20V Input Operating Range output impedance energy sources such as piezoelectric, n Integrated Low-Loss Full-Wave Bridge Rectifier solar, or magnetic transducers. An ultralow quiescent n Up to 100mA of Output Current current undervoltage lockout (UVLO) mode with a wide n Selectable Output Voltages of 1.8V, 2.5V, 3.3V, 3.6V hysteresis window allows charge to accumulate on an input n High Efficiency Integrated Hysteretic Buck DC/DC capacitor until the buck converter can efficiently transfer a n Input Protective Shunt – Up to 25mA Pull-Down at portion of the stored charge to the output. In regulation, VIN ≥ 20V the LTC3588-1 enters a sleep state in which both input and n Wide Input Undervoltage Lockout (UVLO) Range output quiescent currents are minimal. The buck converter n Available in 10-Lead MSE and 3mm × 3mm DFN turns on and off as needed to maintain regulation. Packages Four output voltages, 1.8V, 2.5V, 3.3V and 3.6V, are pin selectable with up to 100mA of continuous output current; APPLICATIONS however, the output capacitor may be sized to service a n Piezoelectric Energy Harvesting higher output current burst. An input protective shunt set n Electro-Mechanical Energy Harvesting at 20V enables greater energy storage for a given amount n Wireless HVAC Sensors of input capacitance. n L, LT, LTC, LTM, Linear Technology, the Linear logo and Burst Mode are registered trademarks Mobile Asset Tracking of Linear Technology Corporation. All other trademarks are the property of their respective n Tire Pressure Sensors owners. n Battery Replacement for Industrial Sensors n Remote Light Switches n Standalone Nanopower Buck Regulator TYPICAL APPLICATION100mA Piezoelectric Energy Harvesting Power SupplyLTC3588-1 3.3V Regulator Start-Up Profile 22 C 20 STORAGE = 22µF, COUT = 47µF NO LOAD, IVIN = 2µA 18 MIDE V21BL 16 PZ1 PZ2 10µH 14 VIN VIN SW VOUT 12 LTC3588-1 1µF V 47µF OUT TAGE (V) 6V 10 6V CAP PGOOD VOL C 8 STORAGE 2 25V V OUTPUT IN2 D0, D1 VOLTAGE 6 GND 4.7µF SELECT 4 VOUT 6V 35881 TA01 2 PGOOD = LOGIC 1 0 0 200 400 600 TIME (s) 35881 TA01b 35881fc For more information www.linear.com/LTC3588-1 1 Document Outline Description Typical Application Absolute Maximum Ratings Pin Configuration Electrical Characteristics Pin Functions Operation Applications Information Typical Application Related Parts
