MAX17710 Charger and Protector

By Maxim Corporation 108

MAX17710 Charger and Protector

Maxim's MAX17710 is a complete system for charging and protecting micropower storage cells such as Infinite Power Solution's THINERGY® microenergy cells (MECs). The IC can manage poorly regulated sources such as energy harvesting devices with output levels ranging from 1 μW to 100 mW. The device also includes a boost regulator circuit for charging the cell from a source as low as 0.75 V (typ). An internal regulator protects the cell from overcharging.

Output voltages supplied to the target applications are regulated using a low-dropout (LDO) linear regulator with selectable voltages of 3.3 V, 2.3 V, or 1.8 V. The output regulator operates in a selectable low-power or ultra-low-power mode to minimize drain of the cell. Internal voltage protection prevents the cell from over-discharging.

  • Ultra-thin, 3 mm x 3 mm x 0.5 mm UTDFN package
  • Lithium charger
    • 1 nA standby IQBATT
    • 625 nA linear charging
    • 1 μW boost charging
  • Lithium cell undervoltage protection
  • Charger overvoltage shunt protection
  • 1.8 V, 2.3 V, or 3.3 V LDO (150 nA IQBATT)
  • Powered/smart cards
  • Remote wireless sensors
  • Memory and real-time clock backup
  • Semiactive RFID tags
  • Medical devices
  • High-temperature applications
  • Military/DoD and aerospace
  • Toys