The UCC1800/1/2/3/4/5, UCC2800/1/2/3/4/5, and UCC3800/1/2/3/4/5 are a family of high-speed, low-power integrated circuits designed for off-line and DC-to-DC fixed frequency current-mode switching power supplies. They feature internal soft start, internal fault soft start, and internal leading-edge blanking of the current-sense signal.
This document is a datasheet for the Unitrode UCC1800/1/2/3/4/5, UCC2800/1/2/3/4/5, and UCC3800/1/2/3/4/5 families of high-speed, low-power integrated circuits. These devices are designed for off-line and DC-to-DC fixed frequency current-mode switching power supplies with minimal parts count. They feature the same pin configuration as the UC1842/3/4/5 family but include added features such as internal full-cycle soft start and internal leading-edge blanking of the current-sense input.
| Typical Starting Supply Current | 100uA |
|---|---|
| Typical Operating Supply Current | 500uA |
| Maximum Operation Frequency | 1MHz |
| Reference Voltage Tolerance | 1.5% |
| OUT Current | 1.0A |
| Response Time (Current-Sense to Gate Drive) | 70ns |
| 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 typical starting supply current is 100uA.
Yes, they feature internal full-cycle soft start.
The typical response time is 70ns.