Datasheet ADP5090 (Analog Devices)

Ultralow Power Boost Regulator with MPPT and Charge Management Data Sheet ADP5090 FEATURES TYPICAL APPLICATION CIRCUIT Boost regulator with maximum power point tracking (MPPT) P ADP5090 IN Hysteretic controller for best ultralight load efficiency SW PSYS SYS 320 nA ultralow quiescent current (CBP ≥ MINOP) VIN COLD-START CHARGE PUMP 260 nA ultralow quiescent current (CBP < MINOP) MPPT Input voltage operation range from 80 mV to 3.3 V BAT RECHARGEABLE CBP + MPPT BOOST Cold start from 380 mV (typical) with charge pump BATTERY OR CONTROL REGULATOR – SUPERCAP Open circuit voltage (OCV) sensing for MPPT MINOP PGOOD TO MCU Programmable MPPT ratio for photovoltaic (PV) or REF thermoelectric generator (TEG) energy sources CHARGE CONTROL AND FROM MCU DIS_SW Programmable shutdown point on MINOP pin POWER PATH SETSD MANAGEMENT BACK_UP Energy storage management OPTIONAL SETPG + PRIMARY – TERM Programmable voltage monitor (2.2 V to 5.2 V) to support BATTERY AGND PGND charging and prevent overcharging or overdischarging
001
Power path management for an optional backup primary
12263-
cell battery connected to the BACK_UP pin
Figure 1.
Radio frequency (RF) transmission friendly Temporary shutdown boost regulator via microcontroller (MCU) communication APPLICATIONS 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 GENERAL DESCRIPTION
The ADP5090 is an integrated boost regulator that converts dc enables boost shutdown during a low light condition. In addition, power from PV cel s or TEGs. The device charges storage elements the DIS_SW pin can temporarily shut down the boost regulator such as rechargeable Li-Ion batteries, thin film batteries, super and is RF transmission friendly. capacitors, and conventional capacitors, and powers up small The charging control function of ADP5090 protects rechargeable electronic devices and battery-free systems. energy storage, which is achieved by monitoring the battery The ADP5090 provides efficient conversion of the harvested voltage with programmable charging termination voltage and limited power from a 16 µW to 200 mW range with sub-µW shutdown discharging voltage. In addition, a programmable operation losses. With the internal cold-start circuit, the regulator PGOOD flag monitors the SYS voltage. can start operating at an input voltage as low as 380 mV. After An optional primary cell battery can be connected and managed cold startup, the regulator is functional at an input voltage range by an integrated power path management control block that of 80 mV to 3.3 V. automatical y switches the power source from the energy harvester, By sensing the input voltage at the VIN pin, the control loop keeps rechargeable battery, and primary cel battery. the input voltage ripple in a fixed range to maintain stable dc- The ADP5090 is available in a 16-lead, 3 mm × 3 mm LFCSP to-dc boost conversion. The VIN OCV sensing and programmable and is rated for a −40°C to +125°C junction temperature range. regulation points of the input voltage al ow extraction of the highest possible energy from the PV cell or TEG harvester. A programmable minimum operation threshold (MINOP)
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Document Outline FEATURES APPLICATIONS GENERAL DESCRIPTION TYPICAL APPLICATION CIRCUIT TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS THERMAL RESISTANCE ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS DETAILED FUNCTIONAL BLOCK DIAGRAM THEORY OF OPERATION COLD STARTUP (VSYS < VSYS_TH, VIN > VIN_COLD) BOOST REGULATOR (VBAT_TERM > VSYS ≥ VSYS_TH) VIN OPEN CIRCUIT AND MPPT ENERGY STORAGE CHARGE MANAGEMENT BACKUP STORAGE PATH MINOP FUNCTION DISABLING BOOST BATTERY OVERCHARGING PROTECTION BATTERY DISCHARGING PROTECTION POWER GOOD (PGOOD) POWER PATH WORKING FLOW CURRENT-LIMIT AND SHORT-CIRCUIT PROTECTION THERMAL SHUTDOWN APPLICATIONS INFORMATION ENERGY HARVESTER SELECTION ENERGY STORAGE ELEMENT SELECTION INDUCTOR SELECTION CAPACITOR SELECTION Input Capacitor SYS Capacitor CBP Capacitor LAYOUT AND ASSEMBLY CONSIDERATIONS TYPICAL APPLICATION CIRCUITS FACTORY PROGRAMMABLE OPTIONS OUTLINE DIMENSIONS ORDERING GUIDE