STMicroelectronics

L4973D3.3  

DC Switching Voltage Regulators

L4973D3.3 Description

The L4973D3.3 is a high-performance, adjustable output DC switching voltage regulator designed and manufactured by STMicroelectronics. This device is part of the DC Switching Voltage Regulators category and is known for its exceptional performance and reliability. The L4973D3.3 is an obsolete product, but it still holds a significant place in the electronics industry due to its unique features and advantages.

L4973D3.3 Features

• Output Type: Adjustable (Fixed) - The L4973D3.3 offers a flexible output voltage range, making it suitable for various applications.
• Voltage - Input (Min/Max): 8V to 55V - This wide input voltage range allows the device to operate under various power supply conditions.
• Current - Output: 3.5A - The L4973D3.3 can deliver a continuous output current of 3.5A, making it suitable for high-current applications.
• Output Configuration: Positive - The output voltage is positive, which is common for most electronic devices.
• Voltage - Output (Min/Fixed): 0.5V (3.3V) - The minimum output voltage is 0.5V, and the fixed output voltage is 3.3V, providing a stable and reliable power source.
• Frequency - Switching: 100kHz to 300kHz - The L4973D3.3 operates at a high switching frequency, resulting in a compact design and high efficiency.
• Topology: Buck - The buck topology allows for step-down voltage conversion, making it ideal for applications requiring a lower output voltage than the input.
• Mounting Type: Surface Mount - The L4973D3.3 is designed for surface mount applications, enabling easy integration into printed circuit boards (PCBs).

L4973D3.3 Applications

The L4973D3.3 is ideal for various applications, including:

1. Telecommunications: The L4973D3.3 can be used in power supply units for telecommunications equipment, providing a stable and reliable power source.
2. Industrial Control Systems: The device can be employed in industrial control systems, where high efficiency and reliability are crucial.
3. Automotive Applications: The L4973D3.3 can be used in automotive electronics, such as infotainment systems and engine control units, to provide a stable power supply.
4. Consumer Electronics: The device can be utilized in consumer electronics, such as smartphones, tablets, and laptops, to ensure a consistent and efficient power supply.

Conclusion of L4973D3.3

The L4973D3.3 is a versatile and high-performance DC switching voltage regulator that offers a wide input voltage range, adjustable output voltage, and high efficiency. Although it is an obsolete product, its unique features and advantages make it suitable for various applications in the electronics industry. The L4973D3.3 is an excellent choice for designers looking for a reliable and efficient power supply solution for their electronic devices.

L4973D3.3 Documents

Download datasheets and manufacturer documentation for L4973D3.3

EOL :

Product Discontinuance Notification (PDF)      

PCN :

Product Change Notification (PDF)       Etched Lead Frame 2nd source qualification (PDF)       PRODUCT CHANGE NOTIFICATION (PDF)