TOP226YN Off-Line Switching Power Converter IC TO-220/3
TOP226YN Off-Line Switching Power Converter IC TO-220/3 is a highly integrated offline switching power converter designed for compact and efficient AC-DC power supplies. It combines a high-voltage power MOSFET, PWM controller, startup circuitry, and comprehensive protection features into a single device, reducing external component count and simplifying power supply design. With built-in current limiting, auto-restart, thermal shutdown, and high-voltage startup, the TOP226YN delivers reliable performance for a wide range of consumer, industrial, and embedded power conversion applications.
Features
- Integrated high-voltage power MOSFET.
- Built-in PWM controller for efficient power conversion.
- High-voltage startup eliminates external startup circuitry.
- Automatic current limiting for enhanced protection.
- Auto-restart function during fault conditions.
- Thermal shutdown protection improves reliability.
- Low external component count simplifies circuit design.
- High efficiency for compact SMPS designs.
- Suitable for universal AC input applications.
- TO-220/3 through-hole package for easy mounting.
Specifications
| Parameter |
Details |
| Product Type |
Off-Line Switching Power Converter IC |
| Product Family |
Offline PWM Switch / Power IC |
| Series |
TOP Switch-II |
| Part Number |
TOP226YN |
| Package |
TO-220/3 |
| Mounting Type |
Through Hole |
| Output Voltage |
5.7V |
| Output Current |
1.4A |
| Drain Voltage |
Up To 36V |
| Switching Frequency |
100kHz |
| Topologies Supported |
Flyback, Forward, Buck, Boost |
| Operating Temperature |
-40°C to 150°C |
Dimensions

Pinout

| Pin Number |
Name |
Description |
| 1 |
Control |
Feedback and control input |
| 2 |
Drain |
High-voltage MOSFET drain |
| 3 |
Source |
Ground / return path |
Applications
- AC-DC switch-mode power supplies.
- Offline flyback power converters.
- Offline forward power converters.
- Buck converter power supplies.
- Boost converter power supplies.
- Power adapters.
- Battery chargers.
- Industrial control power supplies.
- Consumer electronic power supplies.
- Home appliance power modules.
- LED driver power supplies.
- Auxiliary standby power supplies.
- Networking and telecommunications equipment.
- Embedded power conversion systems.
- Smart energy and IoT power supplies.
Package Contents
- 1 x TOP226YN Off-Line Switching Power Converter IC TO-220/3
Datasheet