SG3524N datasheet by STMicroelectronics

SG3524N Frequently Asked Questions (FAQs)

• What is the maximum voltage rating for the SG3524N?
  The maximum voltage rating for the SG3524N is 40V. However, it's recommended to operate it within 30V to ensure reliable operation.
• How do I choose the right values for the timing resistors (RT) and capacitors (CT) for the oscillator?
  The values of RT and CT depend on the desired oscillator frequency. A good starting point is to use the values recommended in the datasheet (RT = 2.2kΩ, CT = 3.3nF) and then adjust them based on the specific application requirements.
• What is the purpose of the soft-start pin (SS) and how do I use it?
  The soft-start pin (SS) is used to gradually increase the output voltage during startup, reducing inrush currents and electromagnetic interference (EMI). Connect a capacitor (typically 10nF to 100nF) from the SS pin to ground and a resistor (typically 1kΩ to 10kΩ) from the SS pin to the output voltage.
• How do I ensure the SG3524N operates in continuous conduction mode (CCM) or discontinuous conduction mode (DCM)?
  The operating mode depends on the inductor value, output current, and switching frequency. For CCM, use a larger inductor value and ensure the inductor current ripple is less than 20% of the output current. For DCM, use a smaller inductor value and ensure the inductor current ripple is greater than 20% of the output current.
• What is the maximum output current capability of the SG3524N?
  The maximum output current capability of the SG3524N is 1A per channel. However, the actual output current depends on the application, PCB layout, and thermal considerations.