Data Sheet

DATA SHEET | SENTIMATE
• Compatible with Primary or Rechargeable Backup Batteries
• Digitally Selectable VOUT and VSTORE
• Maximum Power Point Control
• Ultralow Quiescent Current: 1.6μA
• Regulated Output with VIN or VSTORE Above, Below or Equal to the Output
• Optional Backup Battery Trickle Charger
• Shelf Mode Disconnect Function to Preserve Battery Shelf Life
• Burst Mode® Operation
• Accurate RUN Pin Threshold
• Power Good Output Voltage Indicator
• Selectable Peak Current Limit: 90mA/650mA
• Available in Thermally Enhanced 3mm × 4mm 16-Pin QFN and 20-Pin TSSOP Packages
The LTC3106 is a highly integrated, ultralow voltage buck-boost DC/DC converter with automatic PowerPath manage-
ment optimized for multisource, low power systems. At no load, the LTC3106 draws only 1.6μA .
Zero power Shelf Mode ensures that the backup battery will remain charged if left connected to the LTC3106 for an
extended time.
Additional features include an accurate turn-on voltage, a power good indicator for VOUT, a user selectable 100mA
peak current limit setting for lower power applications, thermal shutdown as well as user selectable backup power
and output voltages.
Implementation of the LT3106 on SENTIMATE board
SENTIMATE board implement the boost configuration of the LTC3106 with only one input source that comes from bat-
tery.
With two alkaline batteries the input voltage is around 3V and the boost stage will elevate at a 3,3V the voltage at its
output maintaining stable in all the batteries input variation range (from 1,8V to 3V) delivering up to 300mA to the
circuits of the SENTIMATE board.
See below the schematics of this input power stage of the SENTIMATE.