The UCCx80x family of high-speed, low-power integrated circuits contain all of the
control and drive components required for off-line and DC-to-DC fixed frequency current-mode
switching mode power supplies with minimal parts count.
These devices have the same pin configuration as the UCx84x family, and also offer the
added features of internal full-cycle soft start and internal leading-edge blanking of the
The UCCx80x family offers a variety of package options, temperature range options, choice
of maximum duty cycle, and choice of critical voltage levels. Lower reference parts such as the
UCC2803 and UCC2805 fit best into battery-operated systems, while the higher reference and higher
UVLO hysteresis of the UCC2802 and UCC2804 make these ideal choices for use in off-line power
The UCC180x series is specified for operation from 55°C to 125°C, the UCC280x series is
specified for operation from 40°C to 85°C, and the UCC380x series is specified for operation from
0°C to 70°C.
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