1250B65 Datasheet - ON Semiconductor

1250B65 Current-Mode PWM Controller

Pin N5 PDIP *8 TSSOP *6 11 62 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 controller ground. Hoo.

NCP1250 Current-Mode PWM Controller for Off-line Power Supplies 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 back its switching frequenc.

1250B65 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

1250B65 Datasheet (286.11 KB)