This document introduces the features of UCC28083/4/5/6 and UCC38083/4/5/6, including programmable slope compensation, internal soft-start, cycle-by-cycle current limiting, low start-up current, single external component oscillator, high-current totem-pole dual output stage, current sense discharge transistor, internally trimmed bandgap reference and undervoltage lockout
The UCC28083‑UCC28086 and UCC38083‑UCC38086 families are BiCMOS PWM controllers for push‑pull power supplies. They offer programmable slope compensation, internal soft‑start, cycle‑by‑cycle current limiting and a high‑current dual‑output stage capable of 1 A sink and 0.5 A source per output. The devices are supplied in 8‑pin TSSOP, SOIC and PDIP packages.
The datasheet includes ordering information, thermal resistance tables, absolute maximum ratings, detailed electrical characteristics, functional block diagrams, pin descriptions, layout recommendations and mechanical drawings. Application examples show a 12 V‑to‑2.5 V push‑pull converter delivering 20 W‑200 W. Important safety and warranty notices are provided at the end of the document.
| Programmable slope compensation | Yes |
|---|---|
| Peak sink current (OUTA/OUTB) | 1.0 A |
| Peak source current (OUTA/OUTB) | 0.5 A |
| Operating temperature range | –55 °C to 150 °C |
The soft‑start interval is 3.5 ms for UCC38083 and UCC38084.
They are offered in 8‑pin TSSOP (PW), 8‑pin SOIC (D) and 8‑pin PDIP (P) packages.