LTC3105

RECOMMENDED FOR NEW DESIGNS

400mA Step-Up DC/DC Converter with Maximum Power Point Control and 250mV Start-Up

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Overview

  • Low Start-Up Voltage: 250mV
  • Maximum Power Point Control
  • Wide VIN Range: 225mV to 5V
  • Auxiliary 6mA LDO Regulator
  • Burst Mode® Operation: IQ = 24μA
  • Output Disconnect and Inrush Current Limiting
  • VIN > VOUT Operation
  • Antiringing Control
  • Soft Start
  • Automatic Power Adjust
  • Power Good Indicator
  • 10-Lead 3mm × 3mm × 0.75mm DFN and 12-Lead MSOP Packages
LTC3105
400mA Step-Up DC/DC Converter with Maximum Power Point Control and 250mV Start-Up
Single Photovoltaic Cell Li-Ion Trickle Charger Output Current vs Input Voltage Product Package 1 Product Package 2
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Documentation

Data Sheet 1

User Guide 3

Design Note 1

Technical Articles 3

Data Sheet

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

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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
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Tools & Simulations

LTspice 1

Models for the following parts are available in LTspice:

  • LTC3105
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.

Evaluation Kits

eval board
schematic 1
schematic 2
schematic 3
schematic 4
schematic 5
DC2042A

Energy Harvesting (EH) Multi-Source Demo Board

Buy Now View Details

Product Details

DC2042A - Demo Board for:
LTC3588-1 Piezoelectric Energy Harvesting Power Supply
LTC3108 Ultralow Voltage Step-Up Converter and Power Manager
LTC3105 400mA Step-Up DC/DC Converter with Maximum Power Point Control and 250mV Start-Up
LTC3459 10V Micropower Synchronous Boost Converter in ThinSOT
LTC2935 Ultra-Low Power Supervisor with Power-Fail Output, Selectable Thresholds


 


eval board
schematic 6
schematic 7
schematic 8
schematic 9
schematic 10
DC2042A

Energy Harvesting (EH) Multi-Source Demo Board

Buy Now View Details

Product Details

DC2042A - Demo Board for:
LTC3588-1 Piezoelectric Energy Harvesting Power Supply
LTC3108 Ultralow Voltage Step-Up Converter and Power Manager
LTC3105 400mA Step-Up DC/DC Converter with Maximum Power Point Control and 250mV Start-Up
LTC3459 10V Micropower Synchronous Boost Converter in ThinSOT
LTC2935 Ultra-Low Power Supervisor with Power-Fail Output, Selectable Thresholds


 


eval board
schematic 11
schematic 12
schematic 13
schematic 14
schematic 15
DC1587A

LTC3105EDD | 250mV Start-Up, Step-Up DC/DC Converter with Maximum Power Point Control

Buy Now View Details

Product Details

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 control (MPPC). Jumpers on the circuit board allow the user to select several MPPC voltages, three boost output voltages and three LDO regulator output voltages. Also included are jumpers for shutdown and for selecting an external pull-up voltage for the power good status output. Terminals are provided for input and output connections, power good output and external power good supply input, shutdown input, and provisions for external MPPC resistor and MPPC diode input. This demonstration board is especially designed for low power solar cell applications.

eval board
schematic 16
schematic 17
schematic 18
schematic 19
schematic 20
DC1587A

LTC3105EDD | 250mV Start-Up, Step-Up DC/DC Converter with Maximum Power Point Control

Buy Now View Details

Product Details

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 control (MPPC). Jumpers on the circuit board allow the user to select several MPPC voltages, three boost output voltages and three LDO regulator output voltages. Also included are jumpers for shutdown and for selecting an external pull-up voltage for the power good status output. Terminals are provided for input and output connections, power good output and external power good supply input, shutdown input, and provisions for external MPPC resistor and MPPC diode input. This demonstration board is especially designed for low power solar cell applications.

eval board
schematic 21
DC2080A

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

Buy Now View Details

Product Details

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 Power Supply
  • LTC3108: Ultralow Voltage Step-Up Converter and Power Manager
  • LTC3105: Step-Up DC/DC Converter with Power Point Control and LDO Regulator
  • LTC3459: 10V Micropower Synchronous Boost Converter
  • LTC2935-2 and LTC2935-4: Ultralow Power Supervisor with Power-Fail Output Selectable Thresholds

The board is designed to connect to the Silicon Labs EFM32™ Giant Gecko Starter Kit (Part No:EFM32GG-STK3700). It also includes two energy harvester transducers (TEG and Solar) and a terminal block for connecting a high impedance AC source. In addition, many turrets are provided, making it easy to connect additional transducers to the board. The board contains multiple jumpers that allow the board to be configured in various ways. The standard build for the board has 4 jumpers installed out of the possible 12 jumpers. The board is very customizable to the end users’ needs. This compatibility makes it a perfect evaluation tool for any low power energy harvesting system. Please refer to the individual data sheets for the operation of each power management circuit. The application section of the demo manual describes the system level functionality of this board and the various ways it can be used in early design prototyping.


To Purchase "Energy Harvesting Solution To Go", click here!

eval board
schematic 22
DC2080A

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

Buy Now View Details

Product Details

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 Power Supply
  • LTC3108: Ultralow Voltage Step-Up Converter and Power Manager
  • LTC3105: Step-Up DC/DC Converter with Power Point Control and LDO Regulator
  • LTC3459: 10V Micropower Synchronous Boost Converter
  • LTC2935-2 and LTC2935-4: Ultralow Power Supervisor with Power-Fail Output Selectable Thresholds

The board is designed to connect to the Silicon Labs EFM32™ Giant Gecko Starter Kit (Part No:EFM32GG-STK3700). It also includes two energy harvester transducers (TEG and Solar) and a terminal block for connecting a high impedance AC source. In addition, many turrets are provided, making it easy to connect additional transducers to the board. The board contains multiple jumpers that allow the board to be configured in various ways. The standard build for the board has 4 jumpers installed out of the possible 12 jumpers. The board is very customizable to the end users’ needs. This compatibility makes it a perfect evaluation tool for any low power energy harvesting system. Please refer to the individual data sheets for the operation of each power management circuit. The application section of the demo manual describes the system level functionality of this board and the various ways it can be used in early design prototyping.


To Purchase "Energy Harvesting Solution To Go", click here!
DC2042A
Energy Harvesting (EH) Multi-Source Demo Board
DC2042A Demo Board DC2042A Demo Board DC2042A Demo Board DC2042A Demo Board DC2042A - Schematic
DC2042A
Energy Harvesting (EH) Multi-Source Demo Board
DC2042A Demo Board DC2042A Demo Board DC2042A Demo Board DC2042A Demo Board DC2042A - Schematic
DC1587A
LTC3105EDD | 250mV Start-Up, Step-Up DC/DC Converter with Maximum Power Point Control
DC1587A Demo Board DC1587A Demo Board DC1587A Demo Board DC1587A Demo Board DC1587A - Schematic
DC1587A
LTC3105EDD | 250mV Start-Up, Step-Up DC/DC Converter with Maximum Power Point Control
DC1587A Demo Board DC1587A Demo Board DC1587A Demo Board DC1587A Demo Board DC1587A - Schematic
DC2080A
Energy Harvesting (EH) Multi-Source Demo Board with Transducers
DC2080A Image
DC2080A
Energy Harvesting (EH) Multi-Source Demo Board with Transducers
DC2080A Image

Latest Discussions

1 Years Ago
LDO pin configuration.
1 Years Ago
Dynamic resistance
1 Years Ago
LTC3105: does it really draw 10uA from the battery when there is no input power?
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