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Solutions Search - Energy Harvesting Solutions

Linear Technology manufactures a wide range of ultra-low power ICs targeted for energy harvesting applications. Power management products that convert energy from Vibration (Piezo), PhotoVoltaic (Solar) and Thermal (TEC, TEG, Thermopiles, Thermocouples) sources provide high efficiency conversion to regulated voltages or to charge batteries and super capacitor storage elements. Boost converters that operate from as little as 20mV or battery chargers with Maximum Power Point capability expand the possibilities for a wide variety of industrial automation and control, wireless sensor, transportation, automotive and building management applications.

For assistance in selecting tranducers, microcontrollers or wireless sensor nodes for your energy harvesting application, please refer to our Energy Harvesting Partners page


High Efficiency Solar MPPT Battery Charger Using LT8611 and AD5245

Perry Faubert - FAE Jul 10th 2017
Introduction Outdoor applications that use solar panels in the range of a few watts often use a microcontroller-based MPPT (Maximum Power Point Tracking)  function to extract the maximum power available over the full range of environmental operating conditions. Many microcontroller-based MPPT solutions designed for ...

Blog Post LTspice 

 

LTC3119 Photovoltaic Panel Input Lead-Acid Charger with Temperature Correction (1MHz)

Jan 18th 2017
The LTC®3119 is a high efficiency 18V monolithic buck-boost converter that can deliver up to 5A of continuous output current. Extensive feature integration and very low resistance internal power switches minimize the total solution footprint for even the most demanding applications. A proprietary 4-switch PWM architecture ...

Circuit 

 

LTC3130 Outdoor Solar Panel Powered, 600mA Supercapacitor charger Using MPPC

Aug 15th 2016
The LTC3130/LTC3130-1 are high efficiency, low noise, 600mA buck-boost converters with wide VIN and VOUT ranges. For high efficiency operation at light loads, BurstMode operation can be selected, reducing the quiescent current to just 1.6µA. Converter start-up is achieved from sources as low as 7.5µW. ...

Circuit 

 

LTC3130 12V Converter Uses MPPC Function to Maintain a Minimum VIN from a Current Limited Source

Aug 15th 2016
The LTC3130/LTC3130-1 are high efficiency, low noise, 600mA buck-boost converters with wide VIN and VOUT ranges. For high efficiency operation at light loads, BurstMode operation can be selected, reducing the quiescent current to just 1.6µA. Converter start-up is achieved from sources as low as 7.5µW. ...

Circuit 

 

LTC3106 Solar Harvester with Primary Battery Backup

Dec 2nd 2015
The LTC®3106 is a highly integrated, ultralow voltage buckboost DC/DC converter with automatic PowerPath management optimized for multisource, low power systems. At no load, the LTC3106 draws only 1.6μA while creating an output voltage up to 5V from either input source. ...

Circuit 

 

LTC3106 TEG Harvester with Secondary Battery Backup

Dec 2nd 2015
The LTC®3106 is a highly integrated, ultralow voltage buckboost DC/DC converter with automatic PowerPath management optimized for multisource, low power systems. At no load, the LTC3106 draws only 1.6μA while creating an output voltage up to 5V from either input source. ...

Circuit 

 

LTC3106 Portable Medical Device with Ambient Light Harvester or USB Powered Charging

Dec 2nd 2015
The LTC®3106 is a highly integrated, ultralow voltage buckboost DC/DC converter with automatic PowerPath management optimized for multisource, low power systems. At no load, the LTC3106 draws only 1.6μA while creating an output voltage up to 5V from either input source. ...

Circuit 

 

LTC3106 Remote Outdoor Solar Powered Harvester with Thin Film Battery Backup

Dec 2nd 2015
The LTC®3106 is a highly integrated, ultralow voltage buckboost DC/DC converter with automatic PowerPath management optimized for multisource, low power systems. At no load, the LTC3106 draws only 1.6μA while creating an output voltage up to 5V from either input source. ...

Circuit 

 

LTM8062 2A Solar Panel Power Manager with 8.4V Lithium Ion Battery Pack and 16V Peak Power Tracking

Jan 15th 2015
The LTM®8062/LTM8062A are complete 32VIN, 2A μModule® power tracking battery chargers. The LTM8062/ LTM8062A provide a constant-current/constant-voltage charge characteristic, a 2A maximum charge current, and employ a 3.3V float voltage feedback reference, so any desired battery float voltage up to 14.4V for the LTM8062 ...

Circuit 

 

LTC4121 Solar Panel Charging 4.2V Li-Ion Battery at 400mA

Jan 9th 2015
The LTC®4121 is a 400mA constant-current/constantvoltage (CC/CV) synchronous step-down battery charger. In addition to CC/CV operation, the LTC4121 regulates its input voltage to a programmable percentage of the input open-circuit voltage. This technique enables maximum power operation with high impedance input sources such ...

Circuit 

 

LTC4079 Solar Panel to 2-Cell Li-Ion Charger with Differential Voltage Regulation

Oct 2nd 2014
The LTC®4079 is a low quiescent current, high voltage linear charger for most battery chemistry types including Li-Ion/Polymer, Lead-Acid or NiMH battery stacks up to 60V. The maximum charge current is adjustable from 10mA to 250mA with an external resistor. The battery charge voltage is set using an external resistor divider. ...

Circuit 

 

LTC4079 Energy Harvesting Charger with Buck, Buck-Boost and LDO Supplies

Oct 2nd 2014
The LTC®4079 is a low quiescent current, high voltage linear charger for most battery chemistry types including Li-Ion/Polymer, Lead-Acid or NiMH battery stacks up to 60V. The maximum charge current is adjustable from 10mA to 250mA with an external resistor. The battery charge voltage is set using an external resistor divider. ...

Circuit LTspice 

 

Doubling the LTC4120 Wireless Power Receiver for Higher Battery Charge Current

Andy Bishop - Design Engineer
Gabino Alonso - Strategic Marketing Engineer
Aug 27th 2014
The LTC4120 is a constant-current/constant-voltage wireless receiver and battery charger. The charge current is programmed up to 400mA with an external resistor. If more than 400mA is required, then use two LTC4120 devices operating in parallel as shown in this schematic. In this case the two LTC4120 operate from one transmitter ...

Blog Post Circuit LTspice 

 

DC2151A - LTC3331EUH Demo Board | Dual Input, Buck Energy Harvester with 10mA Shunt Charger Plus Buck-Boost for Li Ion System Power, 3V ≤ VIN ≤ 18V; Adj 1.8V ≤ Vout ≤ 5V

Jun 25th 2014
Demonstration Circuit DC2151A is a nanopower buckboost DC/DC with energy harvesting battery charger featuring the LTC®3331. The LTC3331 integrates a high voltage energy harvesting power supply plus a DC/DC converter powered by a rechargeable cell battery to create a single output supply for alternative energy applications. ...

Demo Board 

 

LT8490 27.4V Solar Panel Lithium-Ion Polymer Battery Charger

Jun 23rd 2014
The LT®8490 is a buck-boost switching regulator battery charger that implements a constant-current constantvoltage (CCCV) charging profile used for most battery types, including sealed lead-acid (SLA), flooded, gel and lithium-ion. The device operates from input voltages above, below or equal to the output voltage and can ...

Circuit 

 

LT3652HV 2A Solar Panel Power Manager With 7.2V LiFePO4 Battery and 17V Peak Power Tracking

Jun 23rd 2014
The LT3652HV is a complete monolithic step-down battery charger that operates over a 4.95V to 34V input range. The LT3652HV provides a constant-current/constant-voltage charge characteristic, with maximum charge current externally programmable up to 2A. The charger employs a 3.3V float voltage feedback reference, so any desired ...

Circuit 

 

LT3652HV 1A Solar Panel Powered 3-Stage 12V Lead-Acid Fast/Float Charger

Jun 23rd 2014
The LT3652HV is a complete monolithic step-down battery charger that operates over a 4.95V to 34V input range. The LT3652HV provides a constant-current/constant-voltage charge characteristic, with maximum charge current externally programmable up to 2A. The charger employs a 3.3V float voltage feedback reference, so any desired ...

Circuit 

 

LTC3331 AC Line Powered 5V UPS

Jun 9th 2014
The LTC®3331 integrates a high voltage energy harvesting power supply plus a buck-boost DC/DC powered from a rechargeable battery to create a single output supply for alternative energy applications. A 10mA shunt allows simple charging of the battery with harvested energy while a low battery disconnect function protects ...

Circuit 

 

LTC3331 UPS System for Wireless Mesh Networks with Output Supercapacitor Energy Storage

Jun 9th 2014
The LTC®3331 integrates a high voltage energy harvesting power supply plus a buck-boost DC/DC powered from a rechargeable battery to create a single output supply for alternative energy applications. A 10mA shunt allows simple charging of the battery with harvested energy while a low battery disconnect function protects ...

Circuit 

 

LTC3331 Electric Field Energy Harvester

Jun 9th 2014
The LTC®3331 integrates a high voltage energy harvesting power supply plus a buck-boost DC/DC powered from a rechargeable battery to create a single output supply for alternative energy applications. A 10mA shunt allows simple charging of the battery with harvested energy while a low battery disconnect function protects ...

Circuit 

 

LTC3331 Charging a Battery with Harvested Energy

Jun 9th 2014
The LTC®3331 integrates a high voltage energy harvesting power supply plus a buck-boost DC/DC powered from a rechargeable battery to create a single output supply for alternative energy applications. A 10mA shunt allows simple charging of the battery with harvested energy while a low battery disconnect function protects ...

Circuit 

 

LTC3331 Higher Efficiency Battery-Powered Buck Regulator

Jun 9th 2014
The LTC®3331 integrates a high voltage energy harvesting power supply plus a buck-boost DC/DC powered from a rechargeable battery to create a single output supply for alternative energy applications. A 10mA shunt allows simple charging of the battery with harvested energy while a low battery disconnect function protects ...

Circuit 

 

LTC3331 Low Voltage Solar Harvester with Reduced Component Count (VIN < 6V)

Jun 9th 2014
The LTC®3331 integrates a high voltage energy harvesting power supply plus a buck-boost DC/DC powered from a rechargeable battery to create a single output supply for alternative energy applications. A 10mA shunt allows simple charging of the battery with harvested energy while a low battery disconnect function protects ...

Circuit 

 

LTC3331 Wireless Battery Charger

Jun 9th 2014
The LTC®3331 integrates a high voltage energy harvesting power supply plus a buck-boost DC/DC powered from a rechargeable battery to create a single output supply for alternative energy applications. A 10mA shunt allows simple charging of the battery with harvested energy while a low battery disconnect function protects ...

Circuit 

 

LTC3331 Dual ±5V Power Supply

Jun 9th 2014
The LTC®3331 integrates a high voltage energy harvesting power supply plus a buck-boost DC/DC powered from a rechargeable battery to create a single output supply for alternative energy applications. A 10mA shunt allows simple charging of the battery with harvested energy while a low battery disconnect function protects ...

Circuit 

 

Techniques to Maximize Solar Panel Power Output

Trevor Barcelo - Product Line Manager - Battery Management Feb 3rd 2014
Two recent articles, "Energy Harvesting With Low Power Solar Panels" and  "Solar Battery Charger Maintains High Efficiency at Low Light", discuss how to efficiently harvest energy with low power solar panels. Both of these articles mention a concept known as maximum power, which in the context of solar panels is the ability ...

Blog Post 

 

LTC3107 TEG Powered Thermal Harvester with Primary Cell Life Extender

Dec 19th 2013
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 ...

Circuit 

 

LTC3107 Dual Input Harvester Utilizes Thermal and Solar Energy

Dec 19th 2013
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 ...

Circuit 

 

LTC3107 Remote Sensor Application Using Thermal Energy Harvesting to Extend Primary Battery Life

Dec 19th 2013
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 ...

Circuit 

 

LTC3107 Battery Life Extender Utilizing Scavenged 60Hz AC

Dec 19th 2013
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 ...

Circuit 

 

LTC3107 3.6V Solar Powered Battery Life Extender Works from Indoor Lighting

Dec 19th 2013
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 ...

Circuit 

 

LTC3107 Thermal Harvester for Higher VIN Applications, Using External Rectifiers

Dec 19th 2013
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 ...

Circuit 

 

LTC3107 Thermopile-Powered Battery Life Extender

Dec 19th 2013
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 ...

Circuit 

 

LT3652 Solar Battery Charger Maintains High Efficiency in Low Light

Jay Celani - Staff Design Engineer Oct 31st 2013
An important characteristic of any solar panel is that it achieves peak power output at a relatively constant operating voltage (VMP) regardless of illumination level (see Figure 2). The LT3652 2A battery charger exploits this characteristic to maintain a solar panel at peak operating efficiency by implementing input voltage ...

Blog Post Circuit 

 

Frequently Asked Questions: Wireless Power Transfer (WPT) & LTC4120

Trevor Barcelo - Product Line Manager - Battery Management Oct 31st 2013
Q. What is wireless power transfer (WPT)? A. Wireless Power Transfer (WPT) is the process where electrical energy is transmitted from a power source to an electrical load across an air gap using induction coils. These coils produce an electromagnetic field which sends energy from a charging base station (transmitter) to a coil ...

Blog Post 

 

DC2080A - Energy Harvesting (EH) Multi-Source Demo Board with Transducers

Brian Shaffer - Applications Manager - Boston Design Center Jul 18th 2013
The DC2080 is a versatile energy harvesting demo board that is capable of accepting piezoelectric, solar, 4mA to 20mA loops, thermal powered energy sources or any high impedance AC or DC source. The board contains four independent circuits consisting of the following EH ICs: • LTC3588-1: Piezoelectric Energy Harvesting ...

Blog Post Demo Board 

 

What to Do If You Can’t Find a Battery Charger IC for Your Application

Trevor Barcelo - Product Line Manager - Battery Management Jun 25th 2013
Batteries are used in an application space that is broad and varied.  To accommodate such a wide range of products, battery charger IC manufacturers have an almost equally broad and varied line-up of solutions. However, it is virtually impossible for companies, such as Linear Technology, to predict all of the clever ways ...

Blog Post 

 

MicroGen’s Piezo-MEMS Vibration Energy Harvesters Enable Linear Technology SmartMesh IP Wireless Sensor Network

Jim Drew - Sr Apps Engineer Jun 25th 2013
MicroGen Systems, Inc. announced today that vibration energy harvesting BOLT Power Cells (see Figure 1) enabled a live wireless sensor network (WSN) using Linear Technology’s Dust Networks LTC5800-IPM SmartMesh IP mote-on-chip at the Sensors Expo and Conference exhibition in Rosemont, IL on June 5-6, 2013. The Linear mote ...

Blog Post 

 

Solar & Piezo Energy Harvester and Battery Life Extender

Mar 18th 2013
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 full-wave bridge rectifier and a high voltage buck converter, harvests ...

Circuit 

 

LTC3129 Energy Harvesting Converter Operates from a Variety of Weak Sources

Feb 4th 2013
The LTC3129 is a high efficiency, 200mA buck-boost DC/DC converter with a wide VIN and VOUT range. It includes an accurate RUN pin threshold to allow predictable regulator turn-on and a maximum power point control (MPPC) capability that ensures maximum power extraction from non-ideal power sources such as photovoltaic panels. ...

Circuit 

 

LTC3129 Solar Powered Converter with MPPC Charges Storage Capacitor

Feb 4th 2013
The LTC3129 is a high efficiency, 200mA buck-boost DC/DC converter with a wide VIN and VOUT range. It includes an accurate RUN pin threshold to allow predictable regulator turn-on and a maximum power point control (MPPC) capability that ensures maximum power extraction from non-ideal power sources such as photovoltaic panels. ...

Circuit 

 

LTC3129 Solar Powered Converter Extends Battery Life in Low Power 3V Primary Battery Applications

Feb 4th 2013
The LTC3129 is a high efficiency, 200mA buck-boost DC/DC converter with a wide VIN and VOUT range. It includes an accurate RUN pin threshold to allow predictable regulator turn-on and a maximum power point control (MPPC) capability that ensures maximum power extraction from non-ideal power sources such as photovoltaic panels. ...

Circuit 

 

LT3763: 70W, Solar Energy Harvester with Maximum Power Point Regulation

Oct 9th 2012
The LT3763 is a fixed frequency, synchronous, step-down DC/DC controller designed to accurately regulate output currents up to 20A. The average current mode control- ler will maintain inductor current regulation over a wide output voltage range from 0V to 55V. Output current is set by analog voltages on the CTRL pins and an ...

Circuit LTspice 

 

Solar Panel Input 6V to 36VIN to 14.4V at 4.5A Buck Boost Converter 4-Cell LiFePO4 Battery Charger

Jul 23rd 2012
The LTC4000-1 is a high voltage, high performance controller that converts many externally compensated DC/DC power supplies into full-featured battery chargers with maximum power point control. In contrast to the LTC4000, the LTC4000-1 has an input voltage regulation loop instead of the input current regulation loop. Features ...

Circuit 

 

LT3796 Solar Panel Driven SLA Battery Charger with Maximum Power Point Tracking

Apr 3rd 2012
The LT®3796/LT3796-1 are DC/DC controllers designed to regulate a constant-current or constant-voltage and are ideal for driving LEDs. The fixed frequency and current mode architecture result in stable operation over a wide range of supply and output voltages. Two ground referred voltage FB pins serve as the input for several ...

Circuit 

 

Solar-Powered 2.2V Supply and 1.8V LDO with Li Battery Backup and Run Threshold Set to Battery Minimum Voltage

Nov 4th 2011
The LTC3104 is a high efficiency, monolithic synchronous step-down converter using a current mode architecture capable of supplying 300mA of output current. The LTC3104 includes an integrated, adjustable 10mA LDO to power noise sensitive functions. Additionally, the LTC3104 includes an accurate RUN comparator, thermal overload ...

Circuit 

 

Solar-Powered 2.2V Supply with Li Battery Backup and Run Threshold Set to Battery Minimum Voltage

Nov 4th 2011
The LTC3103 is a high efficiency, monolithic synchronous step-down converter using a current mode architecture capable of supplying 300mA of output current. Additionally, the LTC3103 includes an accurate RUN comparator, thermal overload protection, a power good output and an integrated soft-start feature to guarantee that the ...

Circuit LTspice 

 

Solar Powered LED Driver

Jul 26th 2011
This figure shows an application for an LED driver supplied with a solar cell for an emergency LED torch. When the torch is off, the LTC3536 is in shutdown. The quiescent current of less than 1μA minimizes supercapacitor drain when the ambient light is no longer available.When the LED torch is switched on, the LTC3536 is turned ...

Circuit LTspice 

 

DC1587A - LTC3105EDD| 250mV start-up, Step-up DC/DC Converter with Max. Power point Control

Jan 5th 2011
Demonstration circuit 1587A is a boost converter optimized for relatively high impedance, very low voltage input power sources. It allows a user to quickly evaluate the LTC3105 boost converter and LDO regulator. Capable of operating with an input voltage as low as 250mV and as high as 5V, the circuit features maximum power point ...

Demo Board LTspice 

 

Maximum Power Point Control Simplifies Energy Harvesting

Fran Hoffart - Applications Engineer Nov 8th 2010
There is an increasing market for low power electronic devices located in remote locations, away from the power grid. Ideally, the power for these devices should be generated on-site using renewable energy. Perhaps the most visible form of renewable energy is from the sun. Converting this solar energy into electrical energy ...

Video 

 

LTC3105 3.3V from Multiple Stacked-Cell Photovoltaic with Source Temperature Tracking

Oct 15th 2010
The LTC3105 is a high efficiency step-up DC/DC converter that can operate from input voltages as low as 200mV. A 250mV start-up capability and integrated maximum power point controller (MPPC) enable operation directly from low voltage, high impedance alternative power sources such as photovoltaic cells, TEGs (thermoelectric ...

Circuit LTspice 

 

LTC3105 Thermoelectric Generator to 2.4V Super Capacitor Charger

Oct 15th 2010
The LTC3105 is a high efficiency step-up DC/DC converter that can operate from input voltages as low as 200mV. A 250mV start-up capability and integrated maximum power point controller (MPPC) enable operation directly from low voltage, high impedance alternative power sources such as photovoltaic cells, TEGs (thermoelectric ...

Circuit 

 

LTC3105 Single-Cell Photovoltaic NiMH Trickle Charger

Oct 15th 2010
The LTC3105 is a high efficiency step-up DC/DC converter that can operate from input voltages as low as 200mV. A 250mV start-up capability and integrated maximum power point controller (MPPC) enable operation directly from low voltage, high impedance alternative power sources such as photovoltaic cells, TEGs (thermoelectric ...

Circuit 

 

LTC4071 Simple Photovoltaic Charger

Oct 5th 2010
The LTC4071 allows simple charging of Li-Ion/Polymer batteries from very low current, intermittent or continuous charging sources. A near-zero current low battery latching disconnect function protects even the lowest capacity batteries from deep discharge and potentially irreparable damage. The 550nA to 50mA operating current ...

Circuit 

 

LTC3105/LTC4071 2-Cell Solar Panel Li-Ion Battery Charger

Oct 5th 2010
This circuit shows a compact solar-powered battery charger using a LTC3105 as a boost converter and a LTC4071 as Li-Ion shunt charger. A 2-cell 400mW solar panel provides the input power to the LTC3105 to produce over 60mA of charge current in full sunlight. Maximum power point control prevents the solar panel voltage from dropping ...

Circuit 

 

LTC4070 50mA/500mA Li-Ion/Polymer Shunt Battery Charger System - Video Product Brief

Steve Knoth - Senior Product Marketing Engineer Jul 9th 2010
The LTC4070 allows simple charging of Li-Ion/Polymer batteries from very low current, intermittent or continuous charging sources. The 450nA to 50mA operating current makes charging possible from previously unusable sources. With the addition of an external pass device, shunt current may be boosted to 500mA. Stacked cell high ...

Video 

 

LTC3588-1 Piezo Energy Harvesting Power Supply - Video Product Brief

Tony Armstrong - Director of Product Marketing Jun 29th 2010
The LTC3588-1 integrates a low-loss full-wave bridge rectifier with a high efficiency buck converter to form a complete energy harvesting solution optimized for high output impedance energy sources such as piezoelectric transducers. An ultralow quiescent current undervoltage lockout (UVLO) mode allows charge to accumulate on ...

Video LTspice 

 

LTC3109 Auto-Polarity, Ultralow Voltage Step-Up Converter and Power Manager - Video Product Brief

Tony Armstrong - Director of Product Marketing Jun 29th 2010
The LTC3109 is a highly integrated step-up DC/DC converter ideal for harvesting surplus energy from extremely low input voltage sources such as TEGs (thermoelectric generators) and thermopiles. Its unique, proprietary autopolarity topology allows it to operate from input voltages as low as 30mV, regardless of polarity. ...

Video 

 

Energy Harvester Operates from Small Temperature Differentials of Either Polarity

Jun 11th 2010
The LTC3109 is a highly integrated DC/DC converter ideal for harvesting surplus energy from extremely low input voltage sources such as TEGs (thermoelectric generators) and thermopiles. Its unique, proprietary autopolarity topology allows it to operate from input voltages as low as 30mV, regardless of polarity. In this circuit, ...

Circuit 

 

LTC3109/LTC4070 Unipolar Energy Harvester Charges Battery Backup

Jan 29th 2010
The LTC3109 is a highly integrated DC/DC converter ideal for harvesting surplus energy from extremely low input voltage sources such as TEGs (thermoelectric generators) and thermopiles. Its unique, proprietary autopolarity topology allows it to operate from input voltages as low as 30mV, regardless of polarity. In this circuit, ...

Circuit 

 

LTC4070 Photovoltaic Charger with Extremely Low Leakage When Not Charging

Jan 29th 2010
A photovoltaic (PV) application for the LTC4070 is illustrated in this example. In this application, transistor Q1 has been added to further reduce the already low quiescent current of the LTC4070 to achieve extremely low battery discharge when the PV cells are not charging the battery. In long battery life applications, Q1 ...

Circuit 

 

Energy Harvesting Applications

Jim Drew - Sr Apps Engineer Jan 15th 2010
Energy harvesting applications are finding their way into many remote monitoring applications where utility power is not available. New developments in ultralow power microcontrollers with their high level of integration are enabling monitoring systems which draw sub milliwatts of power. Various energy sources that were not ...

Blog Post Video LTspice 

 

LTC3588-1/LTC3388 Piezoelectric Energy Harvester and 1.2V Secondary Rail

Jan 6th 2010
The LTC3388-1/LTC3388-3 are high efficiency step-down DC/DC converters with internal high side and synchronous power switches that draw only 720nA typical DC supply current at no load while maintaining output voltage regulation.The EN pin can be used to activate the LTC3388-1/LTC3388-3. For instance, in this circuit the LTC3388-1 ...

Circuit 

 

LTC3588-1 3.3V Piezoelectric Energy Harvester Powering a Microprocessor with a Wireless Transmitter and 50mA Load Step Response

Jan 6th 2010
The LTC3588-1 integrates a low-loss full-wave bridge rectifier with a high efficiency buck converter to form a complete energy harvesting solution optimized for high output impedance energy sources such as piezoelectric transducers. ...

Circuit 

 

LTC3588-1 5.4V to 2.5V Thermoelectric Energy Harvester

Jan 6th 2010
The LTC3588-1 integrates a low-loss full-wave bridge rectifier with a high efficiency buck converter to form a complete energy harvesting solution optimized for high output impedance energy sources such as piezoelectric transducers. ...

Circuit 

 

LTC3588-1 Dual (3.6V/1.8V) Rail Power Supply with Single Piezo and Automatic Supply Sequencing

Jan 6th 2010
The LTC3588-1 integrates a low-loss full-wave bridge rectifier with a high efficiency buck converter to form a complete energy harvesting solution optimized for high output impedance energy sources such as piezoelectric transducers. ...

Circuit 

 

LTC3588-1 AC Line Powered 3.6V Buck Regulator with Large Output Capacitor to Support Heavy Loads

Jan 6th 2010
The LTC3588-1 integrates a low-loss full-wave bridge rectifier with a high efficiency buck converter to form a complete energy harvesting solution optimized for high output impedance energy sources such as piezoelectric transducers. ...

Circuit 

 

LTC3588-1/LTC4071 Piezoelectric Energy Harvester with Battery Backup

Jan 6th 2010
The LTC4071 allows simple charging of Li-Ion/Polymer batteries from very low current, intermittent or continuous charging sources. A near-zero current low battery latching disconnect function protects even the lowest capacity batteries from deep discharge and potentially irreparable damage. The 550nA to 50mA operating current ...

Circuit 

 

LTC3588-1 Small Solution Size 1.8V Low Voltage Input Piezoelectric Power Supply

Jan 6th 2010
The LTC3588-1 integrates a low-loss full-wave bridge rectifier with a high efficiency buck converter to form a complete energy harvesting solution optimized for high output impedance energy sources such as piezoelectric transducers. ...

Circuit 

 

LTC3588-1 5V to 16V Solar-Powered 2.5V Supply with Supercapacitor for Increased Output Energy Storage and Battery Backup

Jan 6th 2010
5V to 16V Solar-Powered 2.5V Supply with Supercapacitor for Increased Output Energy Storage and Battery Backup ...

Circuit 

 

LTC3588-1 3.3V Piezo Energy Harvester with 9V Battery Backup

Jan 6th 2010
The LTC3588-1 integrates a low-loss full-wave bridge rectifier with a high efficiency buck converter to form a complete energy harvesting solution optimized for high output impedance energy sources such as piezoelectric transducers. ...

Circuit 

 

LTC3588-1 3.3V Fluorescent (Electric Field) Energy Harvester

Jan 6th 2010
The LTC3588-1 integrates a low-loss full-wave bridge rectifier with a high efficiency buck converter to form a complete energy harvesting solution optimized for high output impedance energy sources such as piezoelectric transducers. ...

Circuit 

 

LTC3108 Li-Ion Battery Charger and 2.2V LDO Powered by a Solar Cell with Indoor Lighting

Nov 30th 2009
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. ...

Circuit 

 

LTC3108 2.35V/2.2V Peltier-Powered (TEG) Energy Harvester for Remote Sensor Application

Nov 30th 2009
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. ...

Circuit 

 

LTC3108 2.2V/3.3V/3.3V Peltier-Powered (TEG) Energy Harvester for Wireless Remote Sensor Application

Nov 30th 2009
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. ...

Circuit LTspice 

 

LTC3108 Dual TEG Energy Harvester (3.3V/2.2V) Operates from Temperature Differentials of Either Polarity

Nov 30th 2009
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. ...

Circuit 

 

LTC3108 Ultralow Voltage Step-Up Converter and Power Manager - Video Product Brief

Tony Armstrong - Director of Product Marketing Nov 25th 2009
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 ...

Video LTspice 

 

LT3652 Power Tracking 2A Battery Charger - Video Product Brief

Tony Armstrong - Director of Product Marketing Nov 18th 2009
The LT3652 is a complete monolithic step-down battery charger that operates over a 4.95V to 32V input voltage range. The LT3652 provides a constant-current/ constant-voltage charge characteristic, with maximum charge current externally programmable up to 2A. The charger employs a 3.3V float voltage feedback reference, so any ...

Video 

 

LT3652 1A Solar Panel Powered 3-Stage 12V Lead-Acid Charger

Aug 18th 2009
1A Solar Panel Powered 3-Stage 12V Lead-Acid Fast/Float Charger; 1A Charger Fast Charges with CC/CV Characteristics Up to 14.4V; When Charge Current Falls to 0.1A Charger Switches to 13.5V Float Charge Mode; Charger Re-Initiates 14.4V Fast Charge Mode if Battery Voltage Falls Below 13.2V and Trickle Charges at 0.15A if Battery ...

Circuit LTspice 

 

LT3652 2A Solar Panel Power Manager With 7.2V LiFePO4 Battery and 17V Peak Power Tracking

Aug 18th 2009
The LT3652 is a complete monolithic step-down battery charger that operates over a 4.95V to 32V input voltage range. The LT3652 provides a constant-current/ constant-voltage charge characteristic, with maximum charge current externally programmable up to 2A. The charger employs a 3.3V float voltage feedback reference, so any ...

Circuit 

 

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