* Optimized for Off-line and DC to DC Converters
* Low Start Up Current (<0.5mA)
* Trimmed Oscillator Discharge Current
* Automatic Feed Forward Compensat.

The UC1842A/3A/4A/5A family of control ICs is a pin for pin compatible improved version of the UC3842/3/4/5 family. Providing the necessary features to control current mode switched mode power supplies, this family has the following improved features.

UC1845

UC1845A-EP

UC1845A-SP

UC1845J

UC1845L

UC1845W

UC1840

UC1841

UC1842

UC1842A

UC1842A-EP

UC1842A-SP

UC1842B-D