Key facts
- Brand
- UNITRODE
- Model
- UCC2809-1
- Industry
- Industrial
- Documents
- 2
- Languages
- EN
- Last added
- 2012-08-01
Start here
Unitrode UCC1809/UCC2809/UCC3809 Economy Primary Side Controller Datasheet
The document describes the UCC3809 family of BCDMOS economy low power integrated circuits designed for off-line and isolated DC-to-DC fixed frequency current mode switching power supplies. These devices contain all necessary control and drive circuitry with minimal external parts, featuring user programmable soft start, maximum duty cycle, and an accessible 5V reference.
Read onlineUNITRODE UCC2809-1 specifications
| Startup Current (UCCx809-1) | < 100uA |
|---|---|
| Output Stage Type | Totem Pole |
| Driver Capability | 0.4A Source/0.8A Sink |
| Maximum Duty Cycle | 70% |
| Operating Frequency Range | to 1MHz |
Source: Unitrode UCC1809/UCC2809/UCC3809 Economy Primary Side Controller Datasheet
All UNITRODE UCC2809-1 documents by type
Ratings, dimensions and ordering codes, for selection and design work.
Questions answered in these manuals
What is the startup current for UCCx809-1?
The startup current is less than 100uA.
From: Unitrode UCC1809/UCC2809/UCC3809 Economy Primary Side Controller Datasheet
Can the maximum duty cycle be programmed by the user?
Yes, the oscillator frequency and maximum duty cycle are programmed with two resistors and a capacitor.
From: Unitrode UCC1809/UCC2809/UCC3809 Economy Primary Side Controller Datasheet
What is the maximum startup current for the UCC3809-1?
The startup current is less than 100uA.
From: Unitrode Products UCC1809/UCC2809/UCC3809 Economy Primary Side Controller Datasheet
What is the maximum duty cycle for the UCC3809?
The maximum duty cycle is 70%.
From: Unitrode Products UCC1809/UCC2809/UCC3809 Economy Primary Side Controller Datasheet