UC3873 Datasheet (UTC) - LOW COST POWER-SAVING MODE PWM CONTROLLER

UC3873, LOW COST POWER-SAVING MODE PWM CONTROLLER

The UC3873 is a high performance current mode PWM controller ideally suited for low standby power.

Low VDD startup current make the power reliable on startup design and a large value resistor could be used in the startup circuit to minimize the standby power.

At no load condition, the IC operates in

UC3873 Features

* UTC proprietary frequency hopping technology for Improved EMI performance.

* Power-saving mode for high light-load and standby efficiency

* Soft Start

* Dynamic peak current limiting for constant output power

* Built-in synchronized slope compensation

* OLP, OVP and VDD cl