Tl494 Ltspice Repack -

The TL494 oscillation frequency ($f_osc$) is determined by two external components: a timing capacitor ($C_T$) and a timing resistor ($R_T$). The oscillator charges $C_T$ with a constant current determined by $R_T$.

Connect pin 3 (Feedback) to the output of an error amplifier. tl494 ltspice

Since Texas Instruments does not provide an official TL494 SPICE model, you must use community-verified files: The TL494 oscillation frequency ($f_osc$) is determined by

COMP pin compensation C_COMP COMP 0 0.1uF R_COMP COMP FB 10K tl494 ltspice