LTC3108-1

RECOMMENDED FOR NEW DESIGNS

Ultralow Voltage Step-Up Converter and Power Manager

Data Sheet Product Selection Table

Part Models: 8
1ku List Price: Starting From $3.54

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Overview

Operates from Inputs of 20mV
Complete Energy Harvesting Power
Management System

Selectable V_OUT of 2.5V, 3V, 3.7V or 4.5V
LDO: 2.2V at 3mA
Logic Controlled Output
Reserve Energy Output

Power Good Indicator
Uses Compact Step-Up Transformers
Small 12-Lead (3mm × 4mm) DFN or 16-Lead SSOP Packages

The LTC3108-1 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.

Using a small step-up transformer, the LTC3108-1 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 LTC3108-1 is functionally equivalent to the LTC3108 except for its unique fixed V_OUT options.

The LTC3108-1 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

Part Models: 8
1ku List Price: Starting From $3.54

Documentation

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. View our quality and reliability program and certifications for more information.

Part Model	Pin/Package Drawing	Documentation	CAD Symbols, Footprints, and 3D Models
LTC3108EDE-1#PBF	12-Lead DFN (4mm x 3mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC3108EDE-1#TRPBF	12-Lead DFN (4mm x 3mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC3108EGN-1#PBF	16-Lead SSOP (Narrow 0.15 Inch)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC3108EGN-1#TRPBF	16-Lead SSOP (Narrow 0.15 Inch)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC3108IDE-1#PBF	12-Lead DFN (4mm x 3mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC3108IDE-1#TRPBF	12-Lead DFN (4mm x 3mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC3108IGN-1#PBF	16-Lead SSOP (Narrow 0.15 Inch)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC3108IGN-1#TRPBF	16-Lead SSOP (Narrow 0.15 Inch)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN

Oct 3, 2024 - 24_0235 (QSOP/SSOP PKG) Migrating Bottom Trace Code Marking to Top Side Laser Marking
		PCN24_0235_Form Material_Report Other Delta Qualification Matrix
LTC3108EGN-1#PBF	PRODUCTION
LTC3108EGN-1#TRPBF	PRODUCTION
LTC3108IGN-1#PBF	PRODUCTION
LTC3108IGN-1#TRPBF	PRODUCTION
Oct 11, 2022 - 22_0235 Epoxy Change from Henkel 8290 to 8290A for GN Package
		PCN22_0235_Form Material_Report Qualification Results Summary Delta Qualification Matrix
LTC3108EGN-1#PBF	PRODUCTION
LTC3108EGN-1#TRPBF	PRODUCTION
LTC3108IGN-1#PBF	PRODUCTION
LTC3108IGN-1#TRPBF	PRODUCTION
Apr 6, 2022 - 22_0066 Laser Top Mark for 16QSOP Assembled in ADPG [PNG]
		PCN22_0066_Form Material_Report Delta Qualification Matrix
LTC3108EGN-1#PBF	PRODUCTION
LTC3108EGN-1#TRPBF	PRODUCTION
LTC3108IGN-1#PBF	PRODUCTION
LTC3108IGN-1#TRPBF	PRODUCTION

This is the most up-to-date revision of the Data Sheet.

Software Resources

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Hardware Ecosystem

Parts	Product Life Cycle	Description
Supervisory Circuits & Reset ICs 1
LTC2935	PRODUCTION	Ultra-Low Power Supervisor with Power-Fail Output, Selectable Thresholds
Switching Regulators & Controllers 1
LTC3588-1	RECOMMENDED FOR NEW DESIGNS	Nanopower Energy Harvesting Power Supply

Tools & Simulations

LTspice 2

Models for the following parts are available in LTspice:

LTC3108
LTC3108-1

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.