Linear LTC3107超低电压能量收集解决方案

Linear公司的LTC3107是高度集成的DC/DC转换器,能从极低电压输入源如热电发生器和热电耦等收集和管理多余能量,以延长低功耗无线系统的电池寿命.输入电压可低至20mV,输出电压2.2V LDO,VOUT能跟踪电池电压,采用标准升压变压器,主要用在工业无线接点,遥控传感器和无线电电源,HVAC,自动读表,建筑物自动化和安全系统等.本文介绍了LTC3107主要特性,框图和典型应用电路以及演示板DC2103A电路图和材料清单.
LTC3107 - Ultra-Low Voltage Energy Harvester and Primary Battery Life Extender
The LTCR3107 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 as low as 20mV. Using a small step-up transformer, the LTC3107 provides a complete power management solution for typical wireless sensor applications that operate from a primary battery. The 2.2V LDO can be used to power an external microprocessor, while the main output voltage automatically adapts to match the voltage of the primary battery. The LTC3107 seamlessly transitions from battery power to harvested power whenever harvested energy is available, extending the life of the battery. The BAT_OFF indicator can be used to track battery usage. An optional storage capacitor accumulates excess harvested energy, further extending battery life.
The LTC3107 is available in a small, thermally enhanced 10-lead (3mm × 3mm) DFN package.
LTC3107主要特性:
 Thermal Energy Harvesting Assisted Power Management System
 VOUT Tracks the Primary Battery Voltage
 2.2V LDO Output
 Reserve Energy Output, Clamped to 4.3V
 Operates from Inputs as Low as 20mV
 Battery In-Use Indicator (BAT_OFF)
 IQ from Battery:
 80nA When Energy Harvesting
 6μA No Energy Harvesting
 Standard, Compact Step-Up Transformer
 Small, Thermally Enhanced 1...