NCP1256 Datasheet - ON Semiconductor

NCP1256 Low Power Offline PWM Controller

Pin No Pin Name 1 GND 2 FB 3 BO/OVP Function * Feedback pin Adjust the BO level Latch input 4 CS Current sense + OPP adjustment Latch input 5 Vcc 6 DRV Supplies the controller * protects the IC Driver output Pin Description The controller ground. Hooking an optocou.

Low Power Offline PWM Current Mode Controller with Brown-Out Protection NCP1256 The NCP1256 includes everything to build cost effective switch mode power supplies ranging from a few watts up to several tens of watts. Housed in a tiny TSOP 6 package, the part can be supplied up to 30 V. It hosts a jittered 65 or 100 kHz switching circuitry operated in peak current mode control. When the power in the secondary side starts decreasing, the controller automatically folds back.

NCP1256 Features

* such as a timer

* based auto

* recovery short circuit protection, lossless OPP, and an easily adjustable Brown Out (BO) pin. Two inputs are provided to latch off the part in a practical way, for instance with OVP and OTP events. Several options exists to chose latch or auto

* recov

NCP1256 Datasheet (591.48 KB)