UCC1800/1/2/3/4/5 is a high-speed, low-power integrated circuit that contains all of the control and drive components required for off-line and DC-to-DC fixed frequency current-mode switching power supplies with minimal parts count.
This document is a datasheet for the Unitrode UCC1800/1/2/3/4/5 family of high-speed, low-power integrated circuits designed for off-line and DC-to-DC fixed frequency current-mode switching power supplies. These devices feature minimal parts count requirements with internal full-cycle soft start and leading-edge blanking of the current-sense input.
| Typical Starting Supply Current | 100uA |
|---|---|
| Typical Operating Supply Current | 500uA |
| Maximum Operation Frequency | 1MHz |
| Response Time (Current-Sense to Gate Drive) | 70ns Typical |
| Voltage Reference Tolerance | 1.5% |
| Output Type | Totem-Pole |
| Operating Temperature Range (UCC180x) | -55°C to +125°C |
| Operating Temperature Range (UCC280x) | -40°C to +85°C |
| Operating Temperature Range (UCC380x) | 0°C to +70°C |
The UCC180x series operates from -55°C to +125°C, the UCC280x series from -40°C to +85°C, and the UCC380x series from 0°C to +70°C.
The typical starting supply current is 100uA.
The OUT pin can source a maximum of +1.0A.