UC3846N-DIP

The UC1846/7 family of control ICs provides all of the necessary features to implement fixed frequency, current mode control schemes while maintaining a minimum external parts count. The superior performance of this technique can be measured in im-proved line regulation, enhanced load response characteristics, and a simpler, easier-to-design control loop. Topological advantages in-clude inherent pulse-by-pulse current limiting capability, automatic symmetry correction for push-pull converters, and the ability to par-allel “power modules" while maintaining equal current sharing.Protection circuitry includes built-in under-voltage lockout and programmable current limit in addition to soft start capability. A shut-down function is also available which can initiate either a complete shutdown with automatic restart or latch the supply off.Other features include fully latched operation, double pulse sup-pression, deadline adjust capability, and a±1% trimmed bandgap reference. The UC1846 features low outputs in the OFF state, while theUC1847 features high outputs in the OFF state