The LTC3803ES6-3, manufactured by Linear Technology, is a compact, high-efficiency, constant frequency current mode flyback DC/DC controller designed for use in isolated and non-isolated power conversion applications. This component is especially suited for space-constrained environments due to its small form factor, packaged in a ThinSOT-23 with just six leads.

Key Features

• Wide Input Voltage Range: The LTC3803ES6-3 operates with an input voltage range from 9V to 36V, making it versatile for various applications, including industrial and telecommunications power systems.
• Constant Frequency Operation: With a fixed 200kHz operating frequency, it allows for a predictable noise spectrum and the use of small, low-cost external components.
• High Efficiency: The device's current mode operation ensures excellent line and load regulation, along with the ability to achieve high efficiencies over a wide range of load conditions.
• Low Shutdown Current: The LTC3803ES6-3 features a very low shutdown current of just 10μA, which is ideal for battery-powered systems where power conservation is critical.
• Adjustable Soft-Start: The soft-start function limits the inrush current during startup, thus providing a controlled power-up and reducing stress on the input power source.

Applications

• Isolated Power Supplies
• Telecommunications Power Systems
• Industrial Power Supplies
• Portable Battery-Powered Devices
• Power over Ethernet (PoE) Systems

The LTC3803ES6-3 is designed for simplicity and ease of use, requiring minimal external components to create a complete power supply solution. Its robust feature set and compact size make it an excellent choice for designers looking to optimize power management in their next project.

Part Number: LTC3803ES6-3