LTC3107 - Ultra-Low Voltage Energy Harvester and Primary Battery Life Extender
Features
- Thermal Energy Harvesting Assisted Power Management System
- VOUT Tracks the Primary Battery Voltage
- 2.2V LDO Output
- Reserve Energy Output, Clamped to 4.3V
- Operates from Inputs as Low as 20mV
- Battery In-Use Indicator (BAT_OFF)
- IQ from Battery:
80nA When Energy Harvesting
6μA No Energy Harvesting - Standard, Compact Step-Up Transformer
- Small, Thermally Enhanced 10-lead (3mm × 3mm) DFN package
Typical Application
Description
The LTC®3107 is a highly integrated DC/DC converter designed to extend the life of a primary battery in low power wireless systems by harvesting and managing surplus energy from extremely low input voltage sources such as TEGs (Thermoelectric Generators) and thermopiles. The step-up topology operates from input voltages as low as 20mV.
Using a small step-up transformer, the LTC3107 provides a complete power management solution for typical wireless sensor applications that operate from a primary battery. The 2.2V LDO can be used to power an external microprocessor, while the main output voltage automatically adapts to match the voltage of the primary battery. The LTC3107 seamlessly transitions from battery power to harvested power whenever harvested energy is available, extending the life of the battery. The BAT_OFF indicator can be used to track battery usage. An optional storage capacitor accumulates excess harvested energy, further extending battery life.
The LTC3107 is available in a small, thermally enhanced 10-lead (3mm × 3mm) DFN package.
Packaging
CAD Symbols and Footprints: The downloadable Zip file below contains the schematic symbol and PCB footprints.
For complete and up to date package information and drawings, please refer to our packaging page
| Part Number | Package | Code | Temp | Package Drawing |
RoHS |
|---|---|---|---|---|---|
| LTC3107EDD#PBF | 3x3 DFN-10 | DD | E | 05-08-1699 | Yes |
| LTC3107EDD#TRPBF | 3x3 DFN-10 | DD | E | 05-08-1699 | Yes |
| LTC3107IDD#PBF | 3x3 DFN-10 | DD | I | 05-08-1699 | Yes |
| LTC3107IDD#TRPBF | 3x3 DFN-10 | DD | I | 05-08-1699 | Yes |
Order Info
- Part numbers ending in PBF are lead free. Solder plated terminal finish (SnPb) versions are non-standard and special terms and conditions and pricing applies if available. Please contact LTC marketing for information.
- Part numbers containing TR or TRM are shipped in tape and reel or 500 unit mini tape and reel, respectively
- Please refer to our general ordering information or the product datasheet for more details
Package Variations and Pricing
| Part Number | Package | Temp | Price (1-99) |
Price (1k)* |
RoHS | |
|---|---|---|---|---|---|---|
| LTC3107EDD#PBF | 3x3 DFN-10 | E | $4.22 | $2.95 | Yes | |
| LTC3107EDD#TRPBF | 3x3 DFN-10 | E | $3.01 | Yes | ||
| LTC3107IDD#PBF | 3x3 DFN-10 | I | $4.93 | $3.45 | Yes | |
| LTC3107IDD#TRPBF | 3x3 DFN-10 | I | $3.51 | Yes | ||
| Buy Now • Request Samples | ||||||
Demo Boards
Linear Technology offers many demo boards free of charge to qualified customers. Contact your local sales office or distributor to inquire about a demo board. Certain demo boards are also available for sale via credit card on this website. Demo boards are for evaluation purposes only. It remains the customer’s responsibility to verify proper and reliable operation in the actual end application.| Part Number | Description | Price | Documentation |
|---|---|---|---|
| DC2344A - Gleanergy Multi-Source Energy Harvesting Demo Board with Battery Chargers and Life-Extenders for Use with DC2321A Dust Demo Board | Contact Factory | ||
| DC2103A | LTC3107 Demo Board | 20mV start-up Energy Harvester and Battery Life Extender | $175.00 | |
| DC2509A | Gleanergy Multi-Source E H Demo Board with Battery Chargers and Life-Extenders for Use with DC2321A Dust Demo Board | Contact Factory | |
| Buy Now | |||
Companion Boards
| Part Number | Description | Price | Documentation |
|---|---|---|---|
| DC2321A | Dust Energy Harvesting Demo Board with E-Ink Display, designed to connect to the DC2344A or DC2509A | Contact Factory | |
| DC2509A | Gleanergy Multi-Source E H Demo Board with Battery Chargers and Life-Extenders for Use with DC2321A Dust Demo Board | Contact Factory | |
| Buy Now | |||
Applications
- Industrial Wireless Sensing
- Remote Sensor and Radio power
- HVAC
- Automatic Metering
- Building Automation, Security
- Predictive Maintenance, Condition Monitoring
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Design Tools
LTspice
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Models for the following parts are available in LTspice:
LTC3107
Technical Support
- For immediate technical assistance, contact your local sales office or distributor or call 1-800-4-LINEAR (US customers only) or 408-432-1900.
- For less urgent requests, please complete our Technical Support Request Form. Please allow 2-3 business days for reply.
