You're building a switchmode supply and the controller chip is the one part that decides whether it works or smokes. The UA494/TL494 is the 16-pin workhorse for exactly that job. Drop it into your board, wire up the feedback network, and you've got a dedicated PWM controller doing what it was designed to do. No guessing, no hoping the generic substitute will hold. Grab one while you've got the soldering iron out
| brand | Jaycar |
| package | 16-pin |
| type | Switchmode power controller IC |
| model | UA494/TL494 |
| category | Electronics & Components |
