L6219DS datasheet by STMicroelectronics

L6219DS Frequently Asked Questions (FAQs)

• What is the maximum operating frequency of the L6219DS?
  The maximum operating frequency of the L6219DS is 100 kHz, but it can be adjusted up to 500 kHz with an external resistor.
• How do I choose the right inductor value for my application?
  The inductor value depends on the output voltage, input voltage, 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 bootstrap capacitor (CBOOT) in the L6219DS?
  The bootstrap capacitor (CBOOT) is used to generate the high-side gate drive voltage for the internal power MOSFET. It is charged through the internal diode and discharged through the high-side MOSFET during the switching cycle.
• How do I ensure the L6219DS operates within the safe operating area (SOA)?
  To ensure the L6219DS operates within the safe operating area (SOA), make sure to follow the recommended operating conditions, such as input voltage, output voltage, and output current, as specified in the datasheet. Additionally, ensure that the device is properly cooled and the thermal design is adequate.
• What is the purpose of the enable pin (EN) in the L6219DS?
  The enable pin (EN) is used to enable or disable the device. When the EN pin is high, the device is enabled, and when it is low, the device is disabled. This pin can be used to implement power sequencing or to shut down the device during idle modes.