Linear Technology

The LT3573IMSE#TRPBF is a highly integrated power management IC from Linear Technology, designed to simplify the design of isolated flyback converters. This innovative component integrates a 1.5A, 60V NPN power switch, along with all the necessary oscillator, control and logic circuitry into a single MSOP-16 package. It is tailored for applications requiring isolated power supplies, such as industrial, medical, and telecommunications equipment.

Key Features:

• Integrated Power Switch: The LT3573 features an internal 1.5A, 60V NPN power switch, which significantly reduces the number of external components required.
• No Transformer Third Winding or Opto-Isolator Required for Regulation: The innovative design allows for output voltage regulation without the need for a third winding on the transformer or an opto-isolator, which simplifies design and improves reliability.
• Wide Input Voltage Range: It can operate over a wide input voltage range of 3V to 40V, making it versatile for different power supply configurations.
• Adjustable Switching Frequency: Users can set the switching frequency anywhere between 100kHz to 1MHz via a single resistor, which provides flexibility in balancing efficiency and component size.
• Boundary Mode Operation: The LT3573 operates in boundary mode, which is a variable frequency current mode control switching scheme, resulting in very low no-load quiescent current.

Applications:

• Isolated Industrial Power Supplies
• Medical Equipment
• Telecommunications Power Supplies
• Isolated Auxiliary Power Supplies

The LT3573IMSE#TRPBF is designed for ease of use and flexibility, making it a go-to choice for engineers looking for an isolated flyback converter solution with minimal external components and design complexity. Its robust feature set and high integration ensure that it can meet the demands of a wide range of isolated power supply applications.