EVALUATION KIT AVAILABLE MAX17710 Energy-Harvesting Charger and Protector General Description Features The MAX17710 is a complete system for charging and S Integrated Power-Management IC for Energy protecting micropower-storage cells such as Infinite Power Storage and Load Management Solutions THINERGY microenergy cells (MECs). The IC S Lithium Charger can manage poorly regulated sources such as energy- 1nA Standby I harvesting devices with output levels ranging from 1FW to QBATT 100mW. The device also includes a boost regulator circuit 625nA Linear Charging for charging the cell from a source as low as 0.75V (typ). 1W Boost Charging An internal regulator protects the cell from overcharging. S Lithium Cell Undervoltage Protection Output voltages supplied to the target applications are regulated using a low-dropout (LDO) linear regulator with S Charger Overvoltage Shunt Protection selectable voltages of 3.3V, 2.3V, or 1.8V. The output regu- S 1.8V, 2.3V, or 3.3V LDO (150nA I ) QBATT lator operates in a selectable low-power or ultra-low-power S Lithium Cell Output Buffering mode to minimize drain of the cell. Internal voltage protec- tion prevents the cell from overdischarging. S Ultra-Thin, 3mm x 3mm x 0.5mm UTDFN Package The device is available in an ultra-thin, 3mm x 3mm x Ordering Information appears at end of data sheet. 0.5mm 12-pin UTDFN package. Applications For related parts and recommended products to use with this part, refer to: www.maximintegrated.com/MAX17710.related. Powered/Smart Cards Medical Devices Remote Wireless High-Temperature Sensors Applications Memory and Real-Time Military/DoD and Clock Backup Aerospace Semiactive RFID Tags Toys Simplified Operating Circuit UNREGULATED THINERGY PCKP BATT OUTPUT MEC101 SEL2 CHG RF OR OTHER HIGH-VOLTAGE REGULATED REG OUTPUT SOURCE MAX17710 TEG, SOLAR, LX OR OTHER LOW-VOLTAGE SOURCE LDO AE CONTROL FB LCE SIGNALS EP GND PGND SEL1 THINERGY is a registered trademark of Infinite Power Solutions, Inc. For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim Integrateds website at www.maximintegrated.com. 19-5872 Rev 2 12/12MAX17710 Energy-Harvesting Charger and Protector ABSOLUTE MAXIMUM RATINGS BATT to GND ...........................................................-0.3V to +6V Continuous Power Dissipation (T = +70NC) A CHG to GND ...........................................................-0.3V to +6V UTDFN (derate 15mW/NC above +70NC) ...................1200mW LX to PGND .............................................................-0.3V to +6V Operating Temperature Range .......................... -40NC to +85NC GND to PGND ......................................................-0.3V to +0.3V Junction Temperature .....................................................+150NC FB, AE, LCE, SEL1, SEL2, REG, Storage Temperature Range ............................ -65NC to +150NC PCKP to GND .......................................-0.3V to V + 0.3V Lead Temperature (soldering, 10s) ................................+300NC BATT CHG Continuous Current Soldering Temperature (reflow) ......................................+260NC (limited by power dissipation of package) ...................100mA Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, and functional opera- tion of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. ELECTRICAL CHARACTERISTICS (V = +4.3V, Figure 1, T = -40NC to +85NC, unless otherwise noted. Typical values are at T = +25NC.) (Note 1) CHG A A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS CHG Input Maximum Voltage Limited by shunt regulator (Note 2) 4.875 5.3 5.7 V CHG Enable Threshold V 4.07 4.15 4.21 V CE CHG Quiescent Current I V = 4.0V rising, V = 4.0V 625 1300 nA QCHG CHG BATT CHG Shunt Delay 25 Fs CHG Input Shunt Limit (Note 2) 50 mA V input current limited by Absolute CHG CHG Maximum Input Current 50 100 mA Maximum Ratings V = 4.0V, I = 1FA 45 CHG CHG V = 4.0V, I = -6mA 55 CHG BATT CHG-to-BATT Dropout Voltage mV V = 4.0V, I = -20mA 65 CHG BATT V = 4.0V, I = -40mA 100 CHG BATT BATT REG BATT Regulator Voltage 4.065 4.125 4.160 V BATT Regulation Delay V = 4.2V, starting at 4V 30 Fs CHG Regulator in dropout 450 1030 V = 4.15V, V = 4.12V CHG BATT Harvest standby (AE pulse low) 1 165 V = 0V, V = 2.1V to 4.0V CHG BATT BATT Quiescent Current I QBATT nA AE regulator on, boost off 725 1650 V = 0V, V = 4.0V, AE high CHG BATT LCE regulator on, boost off 150 550 V = 4.0V, LCE mode (Note 3) BATT Maxim Integrated 2