NCP1251

Current-Mode PWM Controller

ON Semiconductor

NCP1251 Features

* Fixed

* Frequency 65 or 100 kHz Current

* Mode Control Operation

* Internal and Adjustable Over Power Protection (OPP) Circuit

* Frequency Foldback Down to 26 kHz and Skip

* Cycle in Light Load Conditions

* Internal Ramp Compensation

* Internal Fixed 4 ms Soft

NCP1251 General Description

The controller ground. Hooking an optocoupler collector to this pin will allow regulation. A resistive divider from the auxiliary winding to this pin sets the OPP compensation level. When brought above 3 V, the part is fully latched off. This pin monitors the primary peak current but also offers a m.

NCP1251 Datasheet (426.87 KB)

NCP1251 Datasheet Preview — Preview of NCP1251 PDF

Datasheet Details

Part number:

NCP1251

Manufacturer:

ON Semiconductor ↗

File Size:

426.87 KB

Description:

Current-mode pwm controller.
DATA SHEET www.onsemi.com Current-Mode PWM Controller for Off-line Power Supplies NCP1251 The NCP1251 is a highly integrated PWM controller capable o.

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NCP1251 Current-Mode PWM Controller ON Semiconductor

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NCP1251 Features

NCP1251 General Description

Datasheet Details

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