The LM2679S-3.3, from Texas Instruments, is a highly efficient, SIMPLE SWITCHER® power converter that is designed to deliver a fixed voltage of 3.3V. This step-down voltage regulator is capable of driving a 5A load with excellent line and load regulation. Encased in a TO-263 package, the LM2679S-3.3 is a versatile component that can be implemented in a variety of applications, ranging from consumer electronics to industrial systems.

Key Features

• Output Voltage: Fixed 3.3V output with high precision.
• Output Current: Capable of delivering up to 5A of continuous current.
• Efficiency: Integrated switch provides up to 92% efficiency, minimizing heat generation.
• Adjustable Switching Frequency: Switching frequency can be set from 260 kHz to 400 kHz with a single external resistor, or synchronized to an external clock.
• Thermal Protection: Built-in thermal shutdown and current limit protection features ensure safe operation under abnormal conditions.
• Voltage Regulation: Excellent line and load regulation specifications ensure a stable output voltage even with varying input voltages and load conditions.
• Package: Supplied in a TO-263 surface-mount package, which is suitable for automated assembly processes and space-constrained applications.

Applications

The LM2679S-3.3's robust design and wide input voltage range make it suitable for a diverse array of applications including:

• High-efficiency step-down regulators in consumer electronics.
• On-card switching regulators for reduction of distributed power supply distribution problems.
• Positive to negative converter (Buck-Boost).

Quality and Reliability

Texas Instruments is renowned for its commitment to quality and reliability. The LM2679S-3.3 is no exception, and it meets the company's stringent standards for performance and durability. Designers can rely on this voltage regulator to maintain system stability and prolong the life of the end product.