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The schematic below shows a 12V DC power supply circuit using 7812 IC. LM340-12, LM340A-12 and LM1084-12 can be used as equivalent of LM7812, if these equivalent voltage regulators are not available you can also use an LM317 IC to get fixed 12V output. Replacement and Equivalent / Other Part Numbers: The IC can handle maximum load of 1A to 1.5A but the input current should be 2A to get 1A to 1.5A at the output. Although this IC is designed for fixed output but the output can also be adjusted if required by the user with the help of only two external resistors at the output the details can be found below in this article.ĭuring usage when the IC performing voltage regulation or stepping down the input voltage all the voltage difference between the input voltage and the output is converted to heat due to which a suitable heatsink is mandatory for proper working of the IC. Moreover the input voltage should not be less than 14V that is the minimum input voltage requirement of the IC to provide fixed 12V output. The IC provides fixed 12V output voltage no matter if the input voltage is fluctuating or changing continuously or it is higher than 12V but the input voltage should not be more than 35V which is the maximum input voltage limit this IC is capable to handle.
#REPLACE IC 7800 POWER SUPPLY SERIES#
LM7812 is a TO-220 packaged positive voltage regulator IC of LM78xx series that is manufactured by many different electronic components manufacturers. Immediate short circuit shutdown function.Advertisements LM7812 IC Features / Technical Specifications: