Dear TI support team,
I measured frequency in case of my condition below.
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MODE, FSEL and EN pin: pulled high(=5V=VIN)
VIN = 5.0V, VOUT = 1.2V, IOUT = 20mA
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I got a waveform below. 1.8MHz appears in the waveform, but the datasheet stated Fsw = 2.5MHz when FSEL is pulled high.
In addition, I confirmed Figure 70 and 72 in the datasheet which describe Swiching Frequency vs Input Voltage and Temperature. But they exceed 2MHz at least at 5V.
I would like to know why there is a deference between the measurement value and the value of the datasheet, and whether the waveform has any problem.
Could you tell me those?
Best regards,
Yoshifumi Shimojima