Analog water-level controller using an LM31 liquid level sensor input and PEL00884 brushed DC motor drive. The circuit buffers and scales the ratiometric sensor signal, derives motor current demand versus water level, shuts the motor off at 100%, and lights a green full-tank LED.

This is an LMZ31503RUQR power convector module with an input voltage of 4.5-14V and an output voltage of 3.3V. The output power of the module is 9.9W #DCDC #3V3 #power #9W #14V #5V #4V5 #referenceDesign #powermanagement #texas-instruments #template #reference-design