Introducing the LT3431IFE from Linear Technology

The LT3431IFE is a robust and versatile high voltage, isolated flyback converter from Linear Technology, a leader in the design and manufacture of high-performance analog integrated circuits. This product is designed to cater to a wide range of applications, from industrial control systems to medical equipment, where reliable and efficient power conversion is crucial.

Key Features

• Wide Input Voltage Range: The LT3431IFE operates over a 3.3V to 100V input voltage range, making it suitable for a variety of power sources, from low-voltage rails to high-voltage lines.
• No Transformer Third Winding or Opto-Isolator Required for Regulation: The device simplifies design by eliminating the need for a third winding or an opto-isolator for output voltage feedback, thanks to its boundary mode operation.
• Integrated 1.25A NPN Power Switch: With an internal power switch capable of delivering 1.25A, the LT3431IFE can handle a substantial power output without the need for external transistors.
• Programmable Soft-Start Function: This feature enables the user to control the inrush current during startup, improving system reliability.
• Output Voltage Programmability: The output voltage is programmable via a resistor divider, providing flexibility in the design to cater to different output requirements.
• Thermal Protection: The LT3431IFE is equipped with over-temperature protection to safeguard the device under extreme operating conditions.

Applications

• Isolated Telecom Power Supplies
• Industrial Control Power Supplies
• Medical Equipment
• Isolated Auxiliary/Housekeeping Power Supplies

The LT3431IFE is packaged in a 16-lead TSSOP with an exposed pad for thermal performance, ensuring the device operates effectively even under high power or high ambient temperature conditions. Its compact form factor and integrated features make it an excellent solution for designers looking to minimize PCB space while maintaining high performance and reliability.

Linear Technology's commitment to quality and performance is evident in the LT3431IFE, making it a go-to choice for engineers and designers seeking a high-efficiency, isolated power solution. Whether you're designing for rugged industrial environments or precise medical applications, the LT3431IFE offers a balance of functionality and ease of use that can help streamline your design process and enhance your product's performance.