step down converter

Discussion in 'General Electronics Chat' started by nandax, Mar 17, 2009.

  1. nandax

    Thread Starter Member

    Nov 20, 2008
    I'd like to use MC34063A as step down converter from 9 V to 3V
    my question is , how can I determine the output current? is there a formula for that? can somebody tell me

  2. beenthere

    Retired Moderator

    Apr 20, 2004
    The load that is fed by the 3 volt supply will determine the current. If it is resistive, then Ohm's law works - I = E/R. Current equals the voltage divided by the resistance.

    If the load is active, the spec sheet for that device should give you the information.