This file is about UCC2800 series, it is a dc-to-dc fixed frequency current mode switching power supply controller, with built-in soft start function, which can meet automotive application scenarios
The UCC2800/1/2/3/4/5 family are high‑speed, low‑power integrated circuits designed for off‑line and dc‑to‑dc fixed‑frequency current‑mode switching power supplies. They share the same pinout as the UC3842 family and add internal full‑cycle soft‑start and leading‑edge blanking of the current‑sense input. The Q1 series is qualified for automotive temperature ranges (‑40 °C to 125 °C) and meets AEC‑Q100 stress‑test requirements.
The document provides ordering information, absolute maximum ratings, detailed electrical characteristics, terminal descriptions, and packaging data. It includes tables of maximum duty cycle, reference voltage, turn‑on/off thresholds, and other key parameters for each part number in the family.
| Maximum duty cycle (UCC2800) | 100% |
|---|---|
| Maximum duty cycle (UCC2801) | 50% |
| Typical starting supply current | 100 µA |
The UCC2803 has a maximum duty cycle of 100 %.
Typical starting supply current is 100 µA.