Internal Oscillator of Voltage Regulator IC

Discussion in 'General Electronics Chat' started by ahgan84, Mar 4, 2012.

  1. ahgan84

    Thread Starter Member

    Dec 19, 2011
    55
    0
    Hi guys,
    I'm a beginner here in hardware design.
    I'm using the LM2576 step down regulator to step down my voltage. I'm just wondering about the internal oscillator frequency of LM2576. It produce 52kHz frequency. But for LM2596 its frequency is 150kHz. May I know what is this internal oscillator frequency and how important is the value to our hardware design?
     
  2. crutschow

    Expert

    Mar 14, 2008
    12,993
    3,229
    Generally higher switching frequencies allow the use of small inductors and capacitors for a given output voltage and current. But they do require a more careful layout to minimize noise/EMI and the switching losses can be higher.
     
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