The CM3842/43 are fixed frequency current-mode PWM !
controllers specially designed for OFF-Line switching !
power supply and DC-to-DC converters with a minimum !
number of external components. These devices feature !
a trimmed oscillator for precise duty cycle control, a !
temperature compensated reference, high gain error !
amplifier, current sensing comparator, and high current !
totem pole output which is suitable for driving !
MOSFETs. !
The under voltage lock-out (U. V. L. O. ) is d.