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.
TheΒ AEM10941Β 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 ο¬lm battery, a supercapacitor, or a conventional capacitor. The boost converter operates with input voltage in a range fromΒ 50mV to 5V. With its unique cold-start circuit, theΒ AEM10941Β can start operating with empty storage elements at an input voltage as low asΒ 380mVΒ and input power as low asΒ 3Β΅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 conο¬gurable voltage betweenΒ 1.8V and 4.1V. Both are driven by highly-eο¬cientΒ 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