UC1851 Datasheet (UNITRODE)

UC1851, PWM Controller

The UC1851 family of PWM controllers are optimized for offline primary side control.

These devices include a high current totem pole output stage and a toggle flip-flop for absolute 50% duty cycle limiting.

In all other respects this line of controllers is pin for pin compatible with the UC1841 seri

UC1851 Features

* All Control, Driving, Monitoring, and Protection Functions Included

* Low-Current Off Line Start Circuit

* Voltage Feed Forward or Current Mode Control

* High Current Totem Pole Output

* 50% Absolute Max Duty Cycle

* PWM Latch for Single Pulse Per Pe