The LM2675N-3.3 from Texas Instruments is a highly efficient, SIMPLE SWITCHER® step-down voltage regulator that offers the convenience and efficiency of a high-quality power converter. Designed to minimize the number of external components, this regulator is capable of delivering up to 1A of continuous output current with an input voltage range of 8V to 40V. The LM2675N-3.3 is optimized for generating a fixed output voltage of 3.3V, making it an ideal choice for a wide range of applications in the industrial, telecommunications, and consumer electronics sectors.

Key Features

• Output Voltage: Fixed 3.3V with a precision of ±2% over temperature.
• Output Current: Capable of delivering up to 1A of continuous output current.
• Input Voltage Range: Wide range from 8V to 40V, accommodating varying levels of input supply.
• Efficiency: High efficiency up to 92%, which reduces power loss and heat generation.
• Frequency: 260kHz fixed frequency internal oscillator that allows the use of smaller surface mount inductors and capacitors.
• Protection Features: Built-in thermal shutdown and current limit protection mechanisms ensure safe operation under abnormal conditions.
• Packaging: Housed in a standard 8-pin PDIP (Plastic Dual-In-Line Package) that is easy to handle and integrate into various designs.

Applications

The LM2675N-3.3 is versatile and can be used in a variety of applications, including:

• Efficient on-card switching regulators for noise-sensitive circuits.
• Simple high-efficiency step-down (buck) regulators.
• Positive to negative converter (Buck-Boost).
• Power supplies for battery-operated devices.

Additional Information

The device incorporates a number of features to simplify its implementation. These include an internal switch, frequency compensation, and a fixed-frequency oscillator. The LM2675N-3.3 also supports external components such as a catch diode, inductor, and capacitors to complete the power supply design. Texas Instruments provides comprehensive technical documentation, including datasheets and application notes, to facilitate the design and development process for engineers and product developers using the LM2675N-3.3.