NCP1256ASN65T1G

ON Semiconductor's 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 kHz or 100 kHz switching circuitry operated in peak current mode control. When the power in the secondary side starts to decrease, the controller automatically folds back its switching frequency down to a minimum level of 26 kHz. As the power further goes down, the part enters skip cycle while limiting the peak current. NCP1256 comes with several protection features such as a timer-based auto-recovery short circuit protection, lossless overpower protection (OPP), and an easily adjustable brownout (BO) pin. Two inputs are provided to latch off the part in a practical way, for instance with overvoltage protection (OVP) and overtemperature protection (OTP) events. Several options exist to choose latch or auto-recovery.