PT2127A is a high performance electronic fan controller LSI from Princeton Technology Corp. It integrates speed control, off-timer, rhythm wind, sleep mode, head swing and/or light control functions, all built into a single chip. Indicator LED output, buzzer output and key control input are also provided to build a full function electronic fan having the highest performance with the least external components. Furthermore, the pin assignments and application circuit of PT2127A are optimized for easy PCB layout and cost saving for electronic fan application.
The PT2127A is a high‑performance CMOS fan controller IC that integrates speed control, off‑timer, rhythm wind, sleep mode, swing‑head and light control in a single chip. It also provides indicator LED, buzzer, and key‑control inputs for complete fan functionality with minimal external components.
The device is offered in DIP or SO packages with 16‑24 pins, supports up to three independent swing‑head/light outputs, four operation modes, and 3‑ or 4‑level timers. Ordering codes specify swing‑head and light control options, and the datasheet includes pin assignments, application circuits for non‑memory and memory start‑up modes, and timing configurations.
| Technology | CMOS |
|---|---|
| Power Consumption | Low |
| Package Types | DIP or SO, 16‑24 pins |
| Available Packages | 16, 18, 20, 22, 24 pin |
| Timer Levels | 3 or 4 levels |
| Rhythm Wind Cycle | 90 s cycle / 6 s per step |
The IC is offered in DIP or SO packages with 16, 18, 20, 22, or 24 pins.
The device provides 3‑ or 4‑level timer configurations.
It includes an indicator LED output, a buzzer output, and a key‑control input.