what is the typical efficiency of the adjustable part?
<answer> The typical efficiency of the adjustable part is from 150 kHz to 500 kHz. <context> The part has a wide input voltage range of 4.0 V to 38 V and can operate with input voltages as low as 3 V during line transients. Operating frequency is adjustable from 150 kHz to 500 kHz with a single resistor and can be synchronized to an external clock.