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LTC3588IDD-1PBF Datasheet(PDF) 1 Page - Linear Technology |
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LTC3588IDD-1PBF Datasheet(HTML) 1 Page - Linear Technology |
1 / 20 page LTC3588-1 1 35881f TYPICAL APPLICATION DESCRIPTION Piezoelectric Energy Harvesting Power Supply 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 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 maintain regulation. Four output voltages, 1.8V, 2.5V, 3.3V and 3.6V, are pin selectable with up to 100mA of continuous output current; however, the output capacitor may be sized to service a higher output current burst. An input protective shunt set at 20V enables greater energy storage for a given amount of input capacitance. L, LT, LTC, LTM, Linear Technology, the Linear logo and Burst Mode are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. 100mA Piezoelectric Energy Harvesting Power Supply FEATURES APPLICATIONS n 950nA Input Quiescent Current (Output in Regulation – No Load) n 450nA Input Quiescent Current in UVLO n 2.7V to 20V Input Operating Range n Integrated Low-Loss Full-Wave Bridge Rectifier n Up to 100mA of Output Current n Selectable Output Voltages of 1.8V, 2.5V, 3.3V, 3.6V n High Efficiency Integrated Hysteretic Buck DC/DC n Input Protective Shunt – Up to 25mA Pull-Down at VIN ≥ 20V n Wide Input Undervoltage Lockout (UVLO) Range n Available in 10-Lead MSE and 3mm × 3mm DFN Packages n Piezoelectric Energy Harvesting n Electro-Mechanical Energy Harvesting n Wireless HVAC Sensors n Mobile Asset Tracking n Tire Pressure Sensors n Battery Replacement for Industrial Sensors n Remote Light Switches n Standalone Nanopower Buck Regulator 35881 TA01 PZ1 VIN CAP VIN2 PZ2 SW VOUT PGOOD D0, D1 LTC3588-1 ADVANCED CERAMETRICS PFC-W14 GND 1μF 6V 4.7μF 6V CSTORAGE 25V 47μF 6V OUTPUT VOLTAGE SELECT VOUT 10μH 2 LTC3588-1 3.3V Regulator Start-Up Profile TIME (s) 0 22 20 18 8 4 10 12 14 16 6 2 0 200 35881 TA01b 600 400 VIN VOUT PGOOD = LOGIC 1 CSTORAGE = 22μF, COUT = 47μF NO LOAD, IVIN = 2μA |
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