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NCP1252 - PWM Controller

NCP1252 Description

Current Mode PWM Controller for Forward and Flyback Applications NCP1252 The NCP1252 controller offers everything needed to build cost * effect.
This pin directly connects to an optocoupler collector. out protection.

NCP1252 Features

* Peak Current Mode Control
* Adjustable Switching Frequency up to 500 kHz
* Jittering Frequency 5% of the Switching Frequency
* Latched Primary Over Current Protection with 10 ms Fixed Delay
* Delay Extended to 150 ms in E Version
* Delayed Operation Upon Start
* up v

NCP1252 Applications

* NCP1252 The NCP1252 controller offers everything needed to build cost
* effective and reliable ac
* dc switching supplies dedicated to ATX power supplies. Thanks to the use of an internally fixed timer, NCP1252 detects an output overload without relying on the auxiliary Vcc. A Brown

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PWM Controller ON Semiconductor
ON Semiconductor NCP1252-like datasheet