Ultra Low Power Boost Regulator With MPPT and Charge Management
The ADP5090 provides efficient conversion of the harvested limited power-down to a 10μW to 1mW range with sub-μW operation losses. With the internal cold-start circuit, the regulator is able to start operating at input voltage as low as 380 mV. Once started, the regulator is functional in the input voltage range from 100 mV to 3 V.
By sensing the voltage at the input pin, the control loop keeps the VIN voltage ripple in fixed range to maintain stable dc-todc conversion. In addition, VIN open circuit voltage (OCV) sensing and programmable regulation points of the input voltage allow extraction of the highest possible energy from the PV cell or TEG harvester. A programmable minimum OCV threshold down to 100 mV enables boost shutdown during low light conditions.
The charging control function of ADP5090 includes rechargeable energy storage protection and is achieved by monitoring the battery voltage with programmable charging termination voltage and shutdown discharging voltage. An optional primary cell battery can be connected and managed by an integrated power path management control block that automatically switches the power source from energy harvester, rechargeable battery, or primary cell battery.
The ADP5090 is available in a 16-lead LFCSP or TSSOP-16-EP package and is rated for a −40°C to +125°C junction temperature range.
- Photovoltaic(PV) cell energy harvesting
- TEG energy harvesting
- Battery regulator powered by solar panel
- Industrial monitoring
- Self-powered wireless sensor devices
- Portable and wearable devices with energy harvesting
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This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.
The ADP5090 evaluation board provides an easy way to evaluate the device. This user guide describes how to quickly set up the board and deliver up to 3.5 V maximum voltage to the SYS output using an external resistor divide. The internal switches turn on as long as the storage element voltage at BAT pin is above the externally programmed SETSD of 2.4 V. The PGOOD indicator toggles high when SYS ramps up to 3 V.
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal.
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The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.