Power management MLR003R – 13
to prevent its progression by suitable measures (e.g. regular, short heating intervals outside of the
standard operating times). If the energy storage continues to discharge and its voltage falls below a
certain limit, then the unit automatically goes into the state of forced heating.
Energy storage typical voltage values Voltage [V] LTO
Fully charged – for charge stop (bq25505 and USB) 2.8
Fully charged – for indicator bit 2.7
Normal operation 2.4 typical (2.0 … 2.8)
Energy storage bit set when below 2.3
Forced heating starts when falling below 2.0
Forced heating ceases when rising above 2.4
Microcontroller turning off all loads and its own power when falling
below
1.8
Microcontroller power-up (under hardware-control) when rising above 2.37
Battery spec HTC1450 (capacity / charge stop / discharge stop) >500mAh / 2.8V / 1.5V
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