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Analog Devices LTC3330 | Demoboard DC2048A
Nanopower Buck-Boost DC/DC with Energy Harvesting Battery Life Extender
Overview
| Topology | Buck-Boost Converter |
| Input voltage | 3-18 V |
| Output 1 | 5.15 V |
| IC revision | B |
Description
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.
Features
- 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
Typical applications
- Energy Harvesting
- Wireless HVAC Sensors and Security Devices
- Solar Powered Systems with Primary Cell Backup
- Mobile Asset Tracking
More information
Products
Order Code | Datasheet | Downloads | Status | Product series | f(mm) | Pins | Type | Mount | L(mm) | IR(A) | Working Voltage(V (AC)) | Operating Temperature | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | WA-SNSR Self-Retaining Spacer, 4.8 mm, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWA-SNSR Self-Retaining Spacer | Drilling in Panel4.8 mm | – | – | – | Length15.9 mm | – | – | Operating Temperature -30 °C up to +85 °C | |||
 | WR-PHD Jumper, –, 2 | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWR-PHD Jumper | – | Pins2 | – | – | – | Rated Current3 A | Working Voltage200 V (AC) | Operating Temperature -25 °C up to +105 °C | |||
 | WR-PHD Pin Header, –, 3 | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWR-PHD Pin Header | – | Pins3 | TypeStraight | MountTHT | Length6 mm | Rated Current2 A | Working Voltage200 V (AC) | Operating Temperature -40 °C up to +105 °C | |||
 | WR-PHD Pin Header, –, 4 | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWR-PHD Pin Header | – | Pins4 | TypeStraight | MountTHT | Length8 mm | Rated Current2 A | Working Voltage200 V (AC) | Operating Temperature -40 °C up to +105 °C |