Datasheet

TPS54262-Q1
SLVS996C –SEPTEMBER 2009–REVISED JUNE 2010 www.ti.com
(7)
Where,
f
sw-Max
= maximum switching frequency
t
ON-Min
= minimum on-time of the NMOS switching transistor
Knowing the switching frequency, the value of resistor to be connected at RT pin can be calculated using the
graph shown in Figure 23.
Figure 23. Switching Frequency vs Resistor Value
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