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LTC3108: Ultralow Voltage Step-Up Converter and Power Manager Data Sheet8/15/2013PDF378K
LTC3108
Ultralow Voltage Step-Up Converter and Power Manager
Top
Overview
Features and Benefits
- Operates from Inputs of 20mV
- Complete Energy Harvesting Power
Management System
- Selectable VOUT of 2.35V, 3.3V, 4.1V or 5V
- LDO: 2.2V at 3mA
- Logic Controlled Output
- Reserve Energy Output
Product Details
The LTC3108 is a highly integrated DC/DC converter ideal for harvesting and managing surplus energy from extremely low input voltage sources such as TEGs (thermoelectric generators), thermopiles and small solar cells. The step-up topology operates from input voltages as low as 20mV. The LTC3108 is functionally equivalent to the LTC3108-1 except for its unique fixed VOUT options.
Using a small step-up transformer, the LTC3108 provides a complete power management solution for wireless sensing and data acquisition. The 2.2V LDO powers an external microprocessor, while the main output is programmed to one of four fixed voltages to power a wireless transmitter or sensors. The power good indicator signals that the main output voltage is within regulation. A second output can be enabled by the host. A storage capacitor provides power when the input voltage source is unavailable. Extremely low quiescent current and high efficiency design ensure the fastest possible charge times of the output reservoir capacitor.
The LTC3108 is available in a small, thermally enhanced 12-lead (3mm × 4mm) DFN package and a 16-lead SSOP package.
| Output Voltage (Switcher) | |
| LTC3108 | Selectable 2.35V, 3.3V, 4.1V or 5V |
| LTC3108-1 | Selectable 2.5V, 3V, 3.7V or 4.5V |
Applications
- Remote Sensors and Radio Power
- Surplus Heat Energy Harvesting
- HVAC Systems
- Industrial Wireless Sensing
- Automatic Metering
- Building Automation
- Predictive Maintenance
Product Lifecycle
Recommended for New Designs
This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.
Evaluation Kits (3)
Documentation & Resources
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R551 Reliability Data3/23/2018PDF25 K
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DC2042A - Demo Manual7/25/2013PDF1M
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DC2080A - Demo Manual (Rev. A)7/25/2013PDF959K
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DC1582B - Demo Manual6/17/2010PDF333K
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Practical Ambient Energy Harvesting for WSNs9/5/2017PDF1M
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Practical Ambient Energy Harvesting for WSNs4/5/2017PDF1M
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Energy Harvesting Now6/27/2011PDF1M
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What Are the Best Applications for IoT in the New World of IC Power Management?5/6/2022 Analog Dialogue
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Frequently Asked Questions: Thermoelectric Energy Harvesting With the LTC3108 & LTC310910/6/2014
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Harvest Energy from a Single Photovoltaic Cell4/1/2011 LT Journal
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Ultra-Low-Voltage Input Power Converters Support Energy Harvesting3/4/2010PDF525K
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LTC3108 Video Product Brief10/15/2018
Tools & Simulations
LTspice
LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.
To launch ready-to-run LTspice demonstration circuits for this part:
Step 1: Download and install LTspice on your computer.
Step 2: Click on the link in the section below to download a demonstration circuit.
Step 3: If LTspice does not automatically open after clicking the link below, you can instead run the simulation by right clicking on the link and selecting “Save Target As.” After saving the file to your computer, start LTspice and open the demonstration circuit by selecting ‘Open’ from the ‘File’ menu.
Models for the following parts are available in LTspice:
LTC3108
LTC3108-1
Design Resources
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal.
PCN-PDN Information
Support & Discussions
LTC3108 Discussions
RE: How to achieve 5 V with LTC3108
6 week(s) ago in Power Management
Sample & Buy
See our Ordering FAQs for answers to questions about online orders, payment options and more.
The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.
Sampling:
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Evaluation Boards
Pricing displayed is based on 1-piece.
Up to two boards can be purchased through Analog.com. To order more than two, please purchase through one of our listed distributors.
Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.