L5972D datasheet by STMicroelectronics

L5972D Frequently Asked Questions (FAQs)

• What is the maximum input voltage that the L5972D can handle?
  The L5972D can handle a maximum input voltage of 30V, but it's recommended to keep it below 28V for reliable operation.
• How do I choose the right inductor value for my application?
  The inductor value depends on the output voltage, output current, and switching frequency. A good starting point is to use the inductor value calculation formula provided in the datasheet, and then adjust based on the specific application requirements.
• What is the purpose of the EN pin, and how do I use it?
  The EN (enable) pin is used to turn the device on and off. It's an active-high input, so connect it to a logic high (e.g., VCC) to enable the device, and connect it to a logic low (e.g., GND) to disable it.
• How do I ensure the L5972D operates within the recommended operating temperature range?
  Make sure to provide adequate heat sinking and airflow around the device, and avoid operating it in high-temperature environments. The recommended operating temperature range is -40°C to 150°C.
• What are the key differences between the L5972D and the L5973D?
  The main difference is the output voltage range: the L5972D has a fixed output voltage of 5V, while the L5973D has an adjustable output voltage (1.2V to 15V). The L5973D also has a slightly higher maximum output current (3A vs 2A for the L5972D).