Analog Devices LTC3330 | Demoboard DC2048A

Beschreibung

Demonstration Circuit 2048A is a nanopower buckboost DC/DC with energy harvesting battery life extender featuring the LTCR3330. The LTC3330 integrates a high voltage energy harvesting power supply plus a DC/DC converter powered by a primary cell battery to create a single output supply for alternative energy applications. The energy harvesting power supply, consisting of an integrated low-loss full-wave bridge with a high voltage buck converter, harvests energy from piezoelectric, solar or magnetic sources. The primary cell input powers a buck-boost converter capable of operating down to 1.8V at its input. Either DC/DC converter can deliver energy to a single output. The buck operates when harvested energy is available, reducing the quiescent current drawn 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 input and outputs are programmable via pin-strapped logic inputs.The LTC3330EUH is available in a 5mm × 5mm 32-lead QFN surface mount package with exposed pad.

Eigenschaften

• Dual Input, Single Output DC/DCs with Input Prioritizer
• Energy Harvesting Input: 3.0V to 19V Buck DC/DC
• Primary Cell Input: 1.8V to 5.5V Buck-Boost DC/DC
• Zero Battery IQ When Energy Harvesting Source is Available
• Ultralow Quiescent Current: 750nA at No-Load
• Low Noise LDO Post Regulator
• Integrated Supercapacitor Balancer
• Up to 50mA of Output Current
• Programmable DC/DC and LDO Output Voltages, Buck UVLO, and Buck-Boost Peak Input Current
• Integrated Low Loss Full-Wave Bridge Rectifier
• Input Protective Shunt: Up to 25mA at VIN ≥ 20V
• 5mm × 5mm QFN-32 Package

Typische Anwendungen

• Solar Powered Systems with Primary Cell Backup
• Wireless HVAC Sensors and Security Devices
• Energy Harvesting
• Mobile Asset Tracking

Weiterführende Informationen

• Datenblatt
• Produktseite des IC-Herstellers