E-PEAS AEM10941 SOLAR ENERGY HARVESTING IC

e-peasΒ AEM10941 Solar Energy Harvesting IC is an integrated Ambient Energy Manager (AEM) that can extract DC power from up to 7-cell solar panels, simultaneously storing energy in a rechargeable element and supplying the system with two independent regulated voltages. The AEM10941 is designed to extend battery lifetime and ultimately eliminate the primary energy storage element in a large range of wireless applications, such as industrial monitoring, geolocation, home automation, health monitoring, and wireless sensor nodes.

E-PEAS AEM10941 SOLAR ENERGY HARVESTING IC

The AEM10941 harvests the available input current up to 110mA. It integrates an ultra-low power boost converter to charge a storage element, such as a Li-ion battery, a thin film battery, a supercapacitor, or a conventional capacitor. The boost converter operates with input voltage in a range from 50mV to 5V. With its unique cold-start circuit, the AEM10941 can start operating with empty storage elements at an input voltage as low as 380mV and input power as low as 3¡W.

The low-voltage supply of theΒ AEM10941Β can be used to drive a microcontroller atΒ 1.2V or 1.8V. The high-voltage supply may typically drive a radio transceiver at a configurable voltage betweenΒ 1.8V and 4.1V. Both are driven by highly-efficientΒ LDOΒ (Low Dropout) regulators for low noise and high stability.

Features

  • Ultra-low-power start-up
    • Cold start from 380mV input voltage and 3Β΅W input power (typical)
  • Ultra-low-power boost regulator
    • Open-circuit voltage sensing for MPPT every 5s
    • Configurable MPPT with 2-pin programming
    • Selectable VocΒ ratios of 70, 75, 85, or 90%
    • Input voltage operation range from 50mV to 5V
    • MPPT voltage operation range from 50mV to 5V
  • Integrated 1.2V/1.8V LDO regulator
    • Up to 20mA load current
    • Power gated dynamically by an external control
    • Selectable output voltage
  • Integrated 8V to 4.1V LDO regulator
    • Up to 80mA load current with 300mV drop-out
    • Power gated dynamically by an external control
    • Selectable output voltage
  • Flexible energy storage management
    • Selectable overcharge and over-discharge protection for any type of rechargeable battery or capacitor
    • Fast supercapacitor charging
    • Warns the load when the battery is running low
    • Warns when output voltage regulators are available
  • Optional primary battery
    • Automatically switches to the primary battery when theΒ secondary battery is exhausted
  • Integrated balun for dual-cell supercapacitor
  • Small footprint, small BOM
    • Compact 5mm x 5mm QFN28 package
    • Only seven passive external components required

Read more: E-PEAS AEM10941 SOLAR ENERGY HARVESTING IC


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