Ultralow Power Boost Regulator with MPPT and Charge Management Data Sheet ADP5090 FEATURES TYPICAL APPLICATION CIRCUIT Boost regulator with maximum power point tracking (MPPT) ADP5090 P IN P SYS SW Hysteretic controller for best ultralight load efficiency SYS COLD-START VIN 320 nA ultralow quiescent current (CBP MINOP) CHARGE PUMP 260 nA ultralow quiescent current (CBP < MINOP) MPPT BAT Input voltage operation range from 80 mV to 3.3 V RECHARGEABLE CBP MPPT BOOST BATTERY OR CONTROL REGULATOR SUPERCAP Cold start from 380 mV (typical) with charge pump Open circuit voltage (OCV) sensing for MPPT MINOP TO MCU PGOOD Programmable MPPT ratio for photovoltaic (PV) or REF CHARGE CONTROL thermoelectric generator (TEG) energy sources AND DIS SW FROM MCU POWER PATH SETSD Programmable shutdown point on MINOP pin MANAGEMENT BACK UP OPTIONAL SETPG + Energy storage management PRIMARY TERM BATTERY AGND PGND Programmable voltage monitor (2.2 V to 5.2 V) to support charging and prevent overcharging or overdischarging Power path management for an optional backup primary Figure 1. cell battery connected to the BACK UP pin 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 cells 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 W to 200 mW range with sub-W 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. automatically 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 cell 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 40C to +125C junction temperature range. regulation points of the input voltage allow extraction of the highest possible energy from the PV cell or TEG harvester. A programmable minimum operation threshold (MINOP) Rev. C Document Feedback Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. rights of third parties that may result from its use. Specifications subject to change without notice. No Tel: 781.329.4700 20142015 Analog Devices, Inc. All rights reserved. license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarks and registered trademarks are the property of their respective owners. Technical Support www.analog.com 12263-001 +ADP5090 Data Sheet TABLE OF CONTENTS Features .............................................................................................. 1 Disabling Boost........................................................................... 13 Applications ....................................................................................... 1 Battery Overcharging Protection ............................................. 13 Typical Application Circuit ............................................................. 1 Battery Discharging Protection ................................................ 13 General Description ......................................................................... 1 Power Good (PGOOD) ............................................................. 14 Revision History ............................................................................... 2 Power Path Working Flow......................................................... 15 Specifications ..................................................................................... 3 Current Limit and Short-Circuit Protection .............................. 15 Absolute Maximum Ratings ............................................................ 4 Thermal Shutdown .................................................................... 15 Thermal Resistance ...................................................................... 4 Applications Information .............................................................. 16 ESD Caution .................................................................................. 4 Energy Harvester Selection ....................................................... 16 Pin Configuration and Function Descriptions ............................. 5 Energy Storage Element Selection ........................................... 16 Typical Performance Characteristics ............................................. 6 Inductor Selection ...................................................................... 16 Detailed Functional Block Diagram ............................................ 11 Capacitor Selection .................................................................... 16 Theory of Operation ...................................................................... 12 Layout and Assembly Considerations ..................................... 17 Cold Startup (V < V , V > V ) ........................... 12 Typical Application Circuits ......................................................... 18 SYS SYS TH In IN COLD Boost Regulator (V > V V ) ........................... 12 Factory Programmable Options ................................................... 20 BAT TERM SYS SYS TH VIN Open Circuit and MPPT .................................................. 12 Outline Dimensions ....................................................................... 21 Energy Storage Charge Management....................................... 12 Ordering Guide .......................................................................... 21 Backup Storage Path ................................................................... 13 MINOP Function ....................................................................... 13 REVISION HISTORY 12/15Rev. B to Rev. C Changes to Figure 10, Figure 12, and Figure 13 ........................... 7 Changes to Power Good (PGOOD) Section ............................... 14 Updated Outline Dimensions ....................................................... 21 8/15Rev. A to Rev. B Changes to Input Peak Current Parameter and BACK UP Current Capability Parameter, Table 1 ........................................... 3 Added Figure 10, Figure 12, Figure 13, and Figure 14 Renumbered Sequentially ................................................................ 7 Changes to Backup Storage Path Section .................................... 13 Added Factory Programmable Options Section and Table 8 Renumbered Sequentially .............................................................. 20 Changes to Ordering Guide .......................................................... 21 11/14Rev. 0 to Rev. A Changes to Figure 25 ...................................................................... 10 Changes to Battery Discharging Protection Section .................. 12 Changes to Power Good (PGOOD) Section and Table 5 Column Headings ........................................................................... 13 Changes to CBP Capacitor Section .............................................. 16 Change to Figure 32 ....................................................................... 18 9/14Revision 0: Initial Version Rev. C Page 2 of 21