Description

PT2129A is a high performance electronic fan controller LSI. Speed control, on-timer, off-timer, rhythm wind, sleep mode, head swing and/or light controls are all built into a single chip. Indicator LED output, buzzer output, key control input, as well as remote control decoding circuitry are all provided to build a full function electronic fan with remote control capability. Pin assignments and application circuit are optimized for easy PCB layout and cost saving for electronic fan application.

Specifications and features

• High performance CMOS technology
• Low power consumption
• DIP or SO package(22 pin SO not available)
• Up to 3 dependent/independent swing-head/light outputs
• Available in 16, 18, 20, 22, 24 pin package for none, one set or two sets swing head and/or light control
• Built-in remote control decoding circuitry with mask option custom code
• Optional independent light control
• 90 seconds cycle/6 seconds per step (off step 3 seconds) rhythm wind pattern
• Four operation modes: ordinary, rhythm, ordinary sleep and rhythm sleep
• Memory start-up mode
• Preset start-up timer up to 15 hours
• 2-3 seconds middle wind start-up (mask option)

Application Scenarios

This electronic fan controller chip can be used for various applications, including:

• Electronic fan with remote control capability
• PCB layout optimization for electronic fan application

Comparison

Advantages and disadvantages of PT2129A electronic fan controller chip:
- Advantages:
1. High performance CMOS technology
2. Low power consumption
3. Built-in remote control decoding circuitry
- Disadvantages:
1. 22 pin SO package not available
2. Limited options for swing-head and/or light control package sizes
3. Limited rhythm wind pattern options