The PT2126 is a fan controller offered in 18‑, 20‑ and 22‑pin DIP packages. It uses CMOS technology and provides functions such as 3‑speed control, 4‑step timer control, sleep‑wind and rhythm‑wind modes, and a timer that can be set up to 15 hours.
The document includes pin‑out tables, example application circuits for fan and heater‑fan control, power‑supply recommendations, and ordering information for the various package codes (C4N‑RSM2, C4N‑RSMI, C4A‑RSMI).
| Technology | CMOS |
|---|---|
| Speed control | 3 speed |
| Timer control steps | 4‑step |
| Timer maximum setting | 15 hours |
| Swing head control | 2‑swing |
| Rhythm cycle | 256 seconds |
| Package (22‑pin) | 22‑pin DIP |
| Package (20‑pin) | 20‑pin DIP |
| Crystal frequency base | 32 768 Hz |
The PT2126 is offered in 22‑pin DIP, 20‑pin DIP, and 18‑pin DIP packages.
It provides three speed settings.
The timer can be set up to 15 hours.
It uses a 32 768 Hz crystal frequency base.