NCP1250 Datasheet (ON Semiconductor) - Current-Mode PWM Controller

NCP1250, Current-Mode PWM Controller

Pin N5 PDIP *8 TSSOP *6 1 1 6 2 Pin Name GND FB 8 3 OPP/OVP 5 4 CS 4 5 VCC 2 6 DRV Function * Feedback pin Adjust the Over Power Protection Latches off the part Current sense + ramp compensation Supplies the controller Driver output Pin Description The cont

DATA SHEET www.onsemi.com Current-Mode PWM Controller for Off-line Power Supplies NCP1250 The NCP1250 is a highly integrated PWM controller capable of delivering a rugged and high performance offline power supply in a tiny TSOP 6 or PDIP 8 package.

With a supply range up to 28 V, the controller hosts a jittered 65 kHz or 100 kHz switching circuitry operated in peak current mode control.

When the power on the secondary side starts to decrease, the controller automatically folds b

NCP1250 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

* Inte