TIDA-00757 Reference Design

Texas Instruments

Smart Lock Reference Design Enabling 5+ Years Battery Life on 4x AA Batteries

Description

With the increasing number of building and home owners looking to retrofit smart locks (or electronic locks) to their building or home: wireless battery powered smart locks are becoming increasingly popular in today’s market.  In a smart lock application: the high current motor and radio often drains the battery quickly: causing battery life to suffer.  Replacing multiple batteries can be a time consuming and costly issue: and thus lowering the average current consumption is often a key design consideration.

Features
  • Over 5 years battery life on 4x AA batteries in series24 lock or unlock events per dayBLE radio connection periodMotor Driver has integrated FET’s and a current sense comparator which enables easy design and small solution size with minimal discrete componentsVoltage-based battery gas gauge: integrated DC-DC converterBLE tested using third party BLE iOS and Android applicationsConfigurable advertisement interval up to 4 seconds
Applications
  • Process analytics
  • Spectrometer
  • Electronic smart lock
  • Fitness machine
  • Fire alarm control panel (FACP)
  • Source measurement unit (SMU)
  • HVAC valve & actuator control
  • Electric toothbrush
  • Clinical digital thermometer
  • Digital stethoscope
  • Weigh scale
Product Categories
  • Motor drivers