SLUAA18 November   2021 BQ24075 , BQ24076 , BQ24078 , BQ24079

 

  1.   Trademarks
  2. 1Introduction
  3. 2Implementation
  4. 3Battery Insertion
  5. 4Ship Mode Exit
  6. 5Ship Mode Reentry
  7. 6Summary

4 Ship Mode Exit

When the push-button is pressed, the SYSOFF is pulled low and the MOSFET between BAT and OUT is turned on. When this happens, the OUT pin is powered by the battery and the MCU is powered. The duration of how long the push-button needs to be pressed to exit ship mode can be controlled by having a delay in software before the GPIO is set high. When the GPIO is set high, the NMOS is turned on which pulls SYSOFF low even when the push-button is not pressed.

GUID-AFD6A35C-3AA5-41E8-AEF8-4613A836D390-low.jpgFigure 4-1 Ship Mode Exit With Push-Button