L200 Power Supply


Power supply with voltage and current regulation built with the L200C regulator.

Circuit Notes

The versatile 5 pin L200C regulator offers both voltage and current regulation in a single package. The IC also features thermal shutdown and input over voltage protection up to 60 Vdc. The package is also available as L200CV which has straight pins for mounting onto a PCB. The above circuit has current limiting of 1 amp, hence Rsc = 0.45 ohm. The supply voltage must always a few volts higher than the maximum output voltage. If you wanted to make a 9 Volt current limited PSU then the input voltage should be a minimum of 12 Volts.


DC Input Voltage:          40V max.
Peak Input Voltage:       60V max. for 10ms
Output Voltage Range:  2.85 to 36V
Output Current Range:  0.1 to 2A
Quiescent Current:        4.2mA
Output Noise:                80uV


Click this link to download the L200 datasheet in pdf format.

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Content sourced from Zen Schematics

Circuit:Andy Collinson