NCP1219 Datasheet (ON Semiconductor)

NCP1219, PWM Controller

Pin Name Description 1 Skip/latch This pin provides a latch input to permanently disable the device under a fault condition.

It also allows the user to adjust the skip threshold.

A resistor between this pin and GND provides noise immunity to the latch input and sets the skip threshold.

The vo

DATA SHEET www.onsemi.com PWM Controller with Adjustable Skip Level and External Latch Input NCP1219 The NCP1219 represents a new, pin to pin compatible, generation of the successful 7 pin current mode NCP12XX product series.

The controller allows for excellent standby power consumption by use of its adjustable skip mode and integrated high voltage startup FET.

Internal frequency jittering, ramp compensation, timer based fault detection and a latch input make this controller an

NCP1219 Features

* Fixed

* Frequency Current

* Mode Operation with Ramp Compensation (65 kHz and 100 kHz Options)

* Dynamic Self Supply Eliminates the Need for an Auxiliary Winding

* Timer

* Based Fault Protection for Improved Overload Detection

* Cycle Skip Reduces