LT3574IMS#TRPBF

The LT3574IMS#TRPBF is a monolithic switching regulator that can be used in a variety of applications, including DC-to-DC voltage regulation, Battery-powered equipment, Converters, and high-efficiency supplies.

The LT3574IMS#TRPBF is a synchronous rectifier Current Mode controller suitable for high-current buck or boost applications. The IC is designed to operate at switching frequencies up to 5MHz and offers excellent transient response and low noise performance. The LT3574IMS#TRPBF features a 500mA, 4-40V input voltage range and operates over a -40 to +125°C junction temperature range.

The LT3574IMS#TRPBF provides a wide variety of features which allow the user to customize the operation of their device for various applications. These features include:

• On-chip multiplier for easy synchronization
• Soft start/stop to avoid current/voltage surges
• 200mV feedback reference that eliminates the need for an external reference
• Frequency dithering to minimize the peak current ripple
• A high-side current limit that avoids the use of an external current limiter
• On-chip enable/disable control
• An on-chip leading edge blanking (LEB) circuit to prevent false current limit trips
• Programmable peak current levels
• Programmable soft-start/stop slew rate to minimize inrush and output current

The LT3574IMS#TRPBF is capable of handling up to 5A of output current and is integrated with a bootstrap and low-side power MOSFET, allowing for designs that are optimized for efficiency and size without needing additional external components. The LT3574IMS#TRPBF can also be used in multiple topologies configurations such as buck, boost, and flyback. Its design includes various protection features such as cycle-by-cycle current limiting, SW deadtime protection, thermal shutdown and input undervoltage lockout.

The LT3574IMS#TRPBF can be used to generate a variety of output voltages with the only external components needed being power MOSFETs, capacitors, and inductors. The LT3574IMS#TRPBF can be used in systems where space and efficiency are at a premium. Its small size, 8-lead UDFN packaged form factor, allows for industry-leading board space savings.

Overall, the LT3574IMS#TRPBF is a great choice for applications that require high output current and high efficiency, such as power supplies, DC-to-DC converters, and battery-powered systems. It is designed to be simple to use and its wide operating range, high efficiency, and robust protection make it an excellent choice for a multitude of applications.