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LTC3108 Datasheet(PDF) 1 Page - Linear Technology |
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LTC3108 Datasheet(HTML) 1 Page - Linear Technology |
1 / 20 page LTC3330 1 3330p For more information www.linear.com/LTC3330 Typical applicaTion FeaTures DescripTion Energy Harvesting DC/DC with Battery Backup The LTC®3330 integrates a high voltage energy harvesting powersupplyplusaDC/DCconverterpoweredbyaprimary cell battery to create a single output supply for alternative energy applications. The energy harvesting power supply, consisting of an integrated full-wave bridge rectifier and a high voltage buck converter, harvests energy from piezo- electric, solar, or magnetic sources. The primary cell input powers a buck-boost converter capable of operation down to 1.8V at its input. Either DC/DC converter can deliver en- ergy to a single output. The buck operates when harvested energy is available, reducing the quiescent current draw on the battery to essentially zero. The buck-boost takes over when harvested energy goes away. A low noise LDO post regulator and a supercapacitor balancer are also integrated, accommodating a wide range of output storage configurations. Voltage and current settings for both inputs and outputs are programmable via pin-strapped logic inputs. TheLTC3330isavailableina5mm×5mmQFN-32package. applicaTions n Dual Input, Single Output DC/DC’s with Input Prioritizer Energy Harvesting Input: 3.0V to 18V Buck DC/DC Primary Cell Input: 1.8V to 5.5V Buck-Boost DC/DC n Zero Battery IQ When Powering Load from Harvested Energy n Ultralow Quiescent Current: 900nA at No-Load n Low Noise LDO Post Regulator n Integrated Supercapacitor Balancer n Up to 50mA of Output Current n Programmable DC/DC and LDO Output Voltages, Buck UVLO, and Buck-Boost Peak Input Current n Integrated Low Loss Full-Wave Bridge Rectifier n Input Protective Shunt–Up to 25mA at VIN ≥ 20V n 5mm × 5mm QFN-32 Package n Energy Harvesting n Solar Powered Systems with Primary Cell Backup n Wireless HVAC Sensors and Security Devices n Mobile Asset Tracking L , LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. PIEZO MIDE V25W 1µF 6V 4.7µF, 6V GND LTC3330 3330 TA01a AC1 VIN CAP VIN2 BAT OUT[2:0] LDO[2:0] IPK[2:0] UV[3:0] AC2 SW SWA 22µH 22µH SWB VOUT LDO_IN SCAP BAL LDO_EN EH_ON PGVOUT PGLDO LDO_OUT VIN3 3V TO 18V 4V TO 18V SOLAR PANEL 1µF 6V PRIMARY CELL 1.8V TO 5.5V 10µF 25V 3 3 3 4 + 1µF 6V 2.2µF 6V 1.2V TO 3.6V 50mA 1.2V TO 5V 50mA 10mF 2.5V 10mF 2.5V OPTIONAL 22µF 6V + – Electrical Specifications Subject to Change |
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