The component has a wide input voltage range of up to 17V and operates on a quiescent current or IQ of about 11µA. The latter is an important parameter because it indicates the proportion of electricity that is not available for useful electronics.
A special feature of the 62125 is an input voltage monitoring device in the shape of a comparator unit that switches the component on and off. This SVS (Supply Voltage Supervisor) is important in energy harvesting applications to ensure a reliable and clean start to the voltage conversion. With the TPS 62125, the switch-on/switch-off voltage of the comparator can be adjusted with resistors. So, when the input voltage rises after actuating the light switch, it reaches the threshold where the DC/DC converter turns on and the output voltage begins to increase. The converter provides a stable output voltage as long as the input voltage has not reached the lower switching threshold (the switch-off threshold).
A certain inrush current is always drawn when the converter is started. This leads to a drop in the input voltage, as not all the energy has been harvested at this point. There may be problems with starting the DC converter properly. This is avoided when the capacity is loaded in the supply path.
Input voltage monitoring of the DC/DC converter using a comparator that switches the component on and off.