The LM2585S-3.3, manufactured by Texas Instruments, is a versatile and robust integrated circuit designed for use in simple switcher power supply applications. This 3A flyback regulator is part of TI's SIMPLE SWITCHER® series, known for their ease of use and minimal external components. The LM2585S-3.3 is specifically engineered to deliver a fixed output voltage of 3.3V, which is a common requirement in digital systems, including microprocessors, FPGAs, and other logic devices.

Key Features

• Output Voltage: Fixed 3.3V with high precision, ensuring reliable and consistent power delivery for sensitive electronics.
• Current Rating: Capable of delivering up to 3A of output current, making it suitable for a wide range of applications.
• Switching Frequency: 52 kHz fixed frequency internal oscillator that helps to simplify the design of the magnetic components.
• Efficiency: High efficiency with a simple and straightforward circuit design, reducing the thermal footprint and the need for extensive heat sinking.
• Protection Features: Built-in thermal shutdown and current limit protection mechanisms to safeguard the device and the load from adverse conditions.
• Packaging: Available in a TO-263 package, which is suitable for through-hole mounting and is known for its thermal performance.

Applications

The LM2585S-3.3 is a versatile component that can be used in a variety of applications, including but not limited to:

• Simple high-efficiency step-down (buck) regulators
• Flyback and forward converters
• Multiple output regulators
• Positive to negative converters (inverting supplies)

Design Support

Texas Instruments provides extensive design support for the LM2585S-3.3, including application notes, design tools, and simulation models to assist engineers in implementing the device in their designs. With the SIMPLE SWITCHER® lineup, designers can benefit from the ease of use and flexibility, reducing time to market for their power supply solutions.