LTC3105EMS[COM-00102]products model : COM-00102

Features

·         Low Start-Up Voltage: 250mV

·         Maximum Power Point Control

·         Wide V_IN Range: 225mV to 5V

·         Auxiliary 6mA LDO Regulator

·         Burst Mode® Operation: I_Q = 24μA

·         Output Disconnect and Inrush Current Limiting

·         V_IN > V_OUT Operation

·         Antiringing Control

·         Soft Start

·         Automatic Power Adjust

·         Power Good Indicator

·         10-Lead 3mm × 3mm × 0.75mm DFN and 12-Lead MSOP Packages

Applications

·         Solar Powered Battery/Supercapacitor Chargers

·         Energy Harvesting

·         Remote Industrial Sensors

·         Low Power Wireless Transmitters

·         Cell Phone, MP3, PMP and GPS Accessory Chargers

Description

The LTC3105 is a high efficiency step-up DC/DC converter that can operate from input voltages as low as 225mV. 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 generators) and fuel cells. A user programmable MPPC set point maximizes the energy that can be extracted from any power source. Burst Mode operation, with a proprietary self adjusting peak current, optimizes converter efficiency and output voltage ripple over all operating conditions.

The AUX powered 6mA LDO provides a regulated rail for external microcontrollers and sensors while the main output is charging. In shutdown, I_Q is reduced to 10μA and integrated thermal shutdown offers protection from overtemperature faults. The LTC3105 is offered in 10-lead 3mm × 3mm × 0.75mm DFN and 12-lead MSOP packages.

datasheet