Friday, May 17, 2013

LM2678 5 0 on 5Volt Switching Regulator

LM2678-5.0 on 5Volt Switching RegulatorLM2678-5.0 on 5Volt Switching Regulator
This is the circuit diagram of a 5V power regulator based on LM2678 IC. The LM2678 series of regulators are monolithic integrated circuits that provide all the necessary functions required for a switching regulator money and can handle loads up to 5A. The IC has more than 90% efficiency and has to load and line regulation. The LM2678 is available in three fixed output voltages (3.3 V, 5V, 12V) and an adjustable output version. The IC is also filled with a bunch of l features such as thermal shutdown, current limiting and power on / off.

Note:
  • The circuit given here is based on the version LM2678-5.0 which gives an output of 5V.
  • The power supply for the circuit can be anything between 8 to 40V DC.
  • The feedback wiring must be placed as away as possible from the inductor L1.
  • Do not use loads that consume more than 5A.
  • A heat sink is seriously recommended for the IC.

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