LM2673SX-ADJ

The LM2673SX-ADJ is a versatile step-down (buck) voltage regulator manufactured by Texas Instruments. It is designed to provide a stable output voltage from a higher input voltage, making it suitable for a variety of applications, including power management in portable devices, automotive systems, and industrial equipment.

Key Features:

1. Adjustable Output Voltage: The LM2673SX-ADJ allows for an adjustable output voltage ranging from 1.2V to 37V, which can be set using external resistors. This flexibility makes it suitable for a wide range of applications.

2. High Efficiency: The device operates with high efficiency, often exceeding 90%, which helps in reducing heat generation and improving battery life in portable applications.

3. Wide Input Voltage Range: It can accept input voltages from 4.5V to 40V, making it compatible with various power sources, including batteries and wall adapters.

4. Integrated Switch: The LM2673SX-ADJ features an integrated N-channel MOSFET switch, which simplifies the design and reduces the number of external components required.

5. Current Limit and Thermal Shutdown: The regulator includes built-in current limiting and thermal shutdown features to protect against overcurrent and overheating conditions, enhancing the reliability of the system.

6. Output Current Capability: It can deliver up to 3A of output current, making it suitable for powering devices with moderate to high current requirements.

7. Compact Package: The LM2673SX-ADJ is available in a compact surface-mount package (SOT-223), which is ideal for space-constrained applications.

8. Low Standby Current: The device has a low quiescent current, which is beneficial for battery-powered applications, as it helps to extend battery life during idle periods.

9. Easy to Use: The LM2673SX-ADJ is designed for ease of use, with a simple application circuit and minimal external components required for operation.

Applications:

• Portable Devices: Ideal for powering handheld devices, such as smartphones and tablets, where efficiency and size are critical.
• Automotive Electronics: Suitable for automotive applications, including infotainment systems and sensor power supplies.
• Industrial Equipment: Can be used in various industrial applications, including control systems and automation equipment.

Electrical Characteristics:

• Input Voltage Range: 4.5V to 40V
• Output Voltage Range: 1.2V to 37V (adjustable)
• Maximum Output Current: 3A
• Efficiency: Up to 90% or higher, depending on load conditions
• Operating Temperature Range: Typically -40°C to +125°C

Conclusion:

The LM2673SX-ADJ from Texas Instruments is a robust and efficient adjustable step-down voltage regulator that meets the needs of a wide range of applications. Its combination of high efficiency, adjustable output, and integrated protection features makes it a popular choice among engineers and designers looking for reliable power management solutions.