* Optimized for off-line and DC-to-DC converters
* Low start-up current (< 1 mA)
* Automatic feedforward compensation
* Pulse-by-pulse current limiting

* Switching regulators of any polarity
* Transformer-coupled DC-DC converters 3 Description The UCx84x series of.

The UCx84x series of control integrated circuits provide the features that are necessary to implement off-line or DC-to-DC fixed-frequency current-mode control schemes, with a minimum number of external components. The internally implemented circuits.

UC1845

UC1845A

UC1845A-EP

UC1845A-SP

UC1845J

UC1845W

UC1840

UC1841

UC1842

UC1842A

UC1842A-EP

UC1842A-SP

UC1842B-D