The ADP5090 is an integrated boost regulator that converts DC power from PV cells or TEGs. The device charges energy storage components such as rechargeable lithium-ion batteries, thin-film batteries, supercapacitors, and conventional capacitors, and powers small electronic devices and battery-free systems.
The ADP5090 offers efficient conversion of limited acquisition energy (from 16 μW to 200 mW) with a sub-μW operating loss. With an internal cold start circuit, the regulator can be started with input voltages as low as 380 mV. After a cold start, the regulator can operate from an input voltage range of 80 mV to 3.3 V.
By detecting the input voltage on the VIN pin, the control loop limits the input voltage ripple to a fixed range, maintaining a stable DC-DC boost conversion. The programmable adjustment point of the VIN OCV sense and input voltage allows for maximum extraction of energy from the PV cell or TEG collector. The Programmable Minimum Operating Threshold (MINOP) enables boost shutdown in low light conditions. In addition, the DIS_SW pin can temporarily turn off the boost regulator and is RF friendly.
The ADP5090's charge control feature protects the rechargeable energy storage by monitoring the battery voltage with a programmable charge termination voltage and a shutdown discharge voltage. In addition, the programmable PGOOD flag monitors the SYS voltage.
The optional primary battery can be connected and managed via an integrated power path management control module that automatically switches power from the energy harvester, rechargeable battery, and primary battery.
The ADP5090 is an ultra-low power synchronous step-up DC-DC regulator in a 3 mm &TImes; 3 mm compact LFCSP_WQ package. With an input voltage range of 0.38 V to 3.3 V, the ADP5090 integrates power switches, synchronous rectifiers, and battery management functions to achieve a highly efficient solution with minimal external components.
The ADP5090 evaluation board makes it easy to evaluate the device. This user guide describes how to quickly set up the board and how to use an external resistor divider to supply up to 3.5 V to the SYS output. The internal switch is turned on as long as the storage element voltage on the BAT pin is higher than the 2.4 V externally programmed SESET. When SYS ramps up to 3 V, the PGOOD indicator switches to a high level.
Advantages and characteristics
Boost regulator with integrated maximum power point tracking (MPPT)
Hysteretic controller for optimum ultra-light load efficiency
320 nA ultra-low quiescent current (CBP ≥ MINOP)
260 nA ultra-low quiescent current (CBP "MINOP")
Input voltage range: 80 mV to 3.3 V
380 mV (typ) cold start with charge pump
MPPT open circuit voltage (OCV) detection
Programmable MPPT ratio for photovoltaic (PV) or thermoelectric generator (TEG) energy sources
MINOP pin programmable turn-off point
Energy storage management
Programmable voltage monitor (2.2 V to 5.2 V) supports charging and prevents overcharging or overdischarging
Power path management for optional spare primary batteries connected to the BACK_UP pin
RF transmission friendly
Temporary turn-off boost regulator for communication via a microcontroller (MCU)
application
Photovoltaic (PV) battery energy harvesting
TEG energy harvesting
Battery regulator powered by solar panels
Industrial monitoring
Self-powered wireless sensor device
Portable and wearable devices with energy harvesting
Featured by flat surface with measurement 11.5mm width by 21mm height, side bend. This size covers all of our colors and functions including mono, tunable white, RGB, RGBW,DMX and SPI. S15 is the best-selling size among all our models, which are now widely used in high class façade lighting, pool lighting, advertisement and etc.
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