L5973ADTR

The L5973ADTR is a high-performance step-down (buck) voltage regulator manufactured by STMicroelectronics. It is designed to provide a stable output voltage with high efficiency, making it suitable for a variety of applications, including industrial, automotive, and consumer electronics.

Key Features:

1. Input Voltage Range: The L5973ADTR can accept a wide input voltage range, typically from 4.5V to 40V, allowing it to be used in various power supply scenarios.

2. Output Voltage: The device can be configured to output a fixed voltage (commonly 3.3V or 5V) or can be adjusted to a desired output voltage using external resistors.

3. Output Current: It is capable of delivering a maximum output current of up to 3A, making it suitable for powering devices that require significant current.

4. Efficiency: The L5973ADTR boasts high efficiency, often exceeding 90%, which helps in reducing heat generation and improving overall system reliability.

5. Switching Frequency: The regulator operates at a fixed switching frequency, typically around 100 kHz, which helps in minimizing the size of external components such as inductors and capacitors.

6. Thermal Protection: The device includes thermal shutdown features to protect against overheating, ensuring safe operation under various load conditions.

7. Short-Circuit Protection: It is equipped with short-circuit protection, which helps prevent damage to the device and the load in case of a fault condition.

8. Package Type: The L5973ADTR is available in a DPAK package, which is a surface-mount type that allows for efficient thermal dissipation and ease of integration into PCB designs.

9. Application Areas: This voltage regulator is ideal for applications such as power supplies for microcontrollers, sensors, and other electronic devices that require a stable and efficient power source.

Electrical Characteristics:

• Quiescent Current: The device has a low quiescent current, which is beneficial for battery-powered applications where power conservation is critical.
• Ripple Rejection: It features good power supply rejection ratio (PSRR), which helps in maintaining output stability against input voltage fluctuations.

Design Considerations:

When designing with the L5973ADTR, it is important to consider the selection of external components, such as the inductor and output capacitors, to optimize performance based on the specific application requirements. The layout of the PCB should also be carefully planned to minimize noise and ensure efficient thermal management.

In summary, the L5973ADTR from STMicroelectronics is a versatile and efficient step-down voltage regulator that is well-suited for a wide range of applications, providing reliable power management solutions in compact designs.