DESCRIPTION

The UTC UC3842A/3843A provide the necessary functions to implement off-line or DC to DC fixed frequency current mode , controlled switching circuits with a minimal external part count

FEATURES

* Low external part count.

* Low start up current ( Typical 0.12mA )

* Automatic feed forward compensation

* Pulse-by-Pulse current limiting

* Under-voltage lockout with hysteresis

* Double pulse Suppression

* High current totem pole output to drive MOSFET directly

* Internally trimmed band gap reference

* 500kHz operation