The LT3758HMSE#PBF is a high-performance, isolated DC/DC controller from Linear Technology, designed to drive transformers for both isolated and non-isolated applications. This versatile device is capable of generating a wide range of output voltages from a variety of input sources, including single-ended or multiple-ended configurations.

Key Features

• Wide Input Voltage Range: The controller operates over a 5.5V to 100V input voltage range, making it suitable for a broad spectrum of power sources.
• Adjustable Switching Frequency: Users can set the switching frequency anywhere between 100kHz and 1MHz, allowing for flexibility in design to optimize efficiency and component size.
• Integrated Gate Driver: The LT3758HMSE#PBF integrates a 1.9A, high-side gate driver, which simplifies the circuit and reduces external component count.
• Robust Thermal Performance: Housed in an MSOP-16 package with enhanced thermal performance, this product is designed to operate reliably in demanding conditions.

Applications

The LT3758HMSE#PBF is ideal for a range of applications, including but not limited to:

• Isolated Telecom or Datacom Power Supplies
• Industrial Applications
• Medical Equipment
• Automotive Systems
• Power-over-Ethernet (PoE) Systems

Protection Features

With an array of protection features, the LT3758HMSE#PBF ensures safe and reliable operation:

• Soft-Start Function: Limits inrush current during startup, providing a controlled power-up sequence.
• Under-Voltage Lockout (UVLO): Shuts down the device when the input voltage falls below a preset threshold, protecting the circuit.
• Over-Temperature Protection: Automatically reduces switching frequency or shuts down the device to prevent overheating.

Conclusion

The LT3758HMSE#PBF from Linear Technology is a sophisticated and reliable choice for designers seeking an isolated DC/DC controller that offers flexibility, efficiency, and protection in a compact package. Its broad input voltage range and adjustable switching frequency make it a versatile solution for a wide array of power conversion challenges.