UD-2023 electronic circuit power supply

The electronic circuit power supply selects different power supply circuits according to different load currents. When the load current is less than the preset current, the output voltage of the power supply in the terminal equipment is stepped down by the LDO to supply power to the load module. At this time, compared with the DC /DC converter and LDO step-down method, the efficiency of using a low-dropout linear regulator alone to supply power to the load module is high; when the load current is greater than the preset current, the output voltage of the power supply in the terminal equipment first passes through the DC/ The DC converter steps down the voltage, and then provides it to the load module after being stepped down by the LDO. Compared with the way of stepping down the power supply using the low-dropout linear High voltage power supply efficiency.