The LM2673SDX-3.3 from Texas Instruments is a highly efficient, step-down voltage regulator with a fixed output voltage of 3.3V. This SIMPLE SWITCHER® device is designed to provide up to 3A of load current with excellent line and load regulation. The LM2673 series operates at a switching frequency of 260kHz, thus allowing the use of smaller and lower-cost inductors and capacitors, resulting in a compact power supply solution.

Key Features:

• Output Voltage: Fixed 3.3V with high precision.
• Output Current: Capable of delivering up to 3A.
• Efficiency: High efficiency up to 92%, reducing heat dissipation.
• Switching Frequency: 260kHz fixed frequency operation.
• Thermal Shutdown: In-built thermal shutdown and current limit protection.
• Package: Available in a small footprint, surface-mount TO-263 package.

Applications:

The LM2673SDX-3.3 is suitable for a wide range of applications, including:

• Simple high-efficiency step-down (buck) regulators.
• Efficient pre-regulators for linear regulators.
• On-card switching regulators for elimination of noise and distribution problems associated with single-point regulation.

Advantages:

Equipped with a number of features to ensure robust performance, the LM2673SDX-3.3 offers several advantages:

• The use of a novel architecture and a synchronous rectifier to achieve very high efficiency.
• The ability to operate without external Schottky diodes or heat sinks, simplifying design and reducing system cost.
• Patented internal compensation to minimize the number of external components and simplify the power supply design.

Reliability:

Texas Instruments is known for its commitment to manufacturing high-quality and reliable components. The LM2673SDX-3.3 is no exception, offering great performance for a variety of demanding applications.