MC34063ACD datasheet by STMicroelectronics

MC34063ACD Frequently Asked Questions (FAQs)

• What is the maximum input voltage that can be applied to the MC34063ACD?
  The maximum input voltage that can be applied to the MC34063ACD is 40V, but it's recommended to keep it below 35V for reliable operation.
• How do I calculate the output voltage of the MC34063ACD?
  The output voltage of the MC34063ACD can be calculated using the formula: Vout = (R1 / R2) * (Vin - Vsat), where R1 and R2 are the resistors connected to the feedback pin, Vin is the input voltage, and Vsat is the saturation voltage of the internal switch (around 1.5V).
• What is the minimum input voltage required for the MC34063ACD to operate?
  The minimum input voltage required for the MC34063ACD to operate is around 3.5V, but it's recommended to keep it above 4.5V for reliable startup and operation.
• Can I use the MC34063ACD as a boost converter?
  Yes, the MC34063ACD can be used as a boost converter, but it's not optimized for high-power boost applications. It's more suitable for low-power, low-voltage boost applications.
• How do I choose the right inductor value for the MC34063ACD?
  The inductor value for the MC34063ACD depends on the input voltage, output voltage, and output current. A good starting point is to use the formula: L = (Vin - Vout) / (f * ΔI), where f is the switching frequency (around 65 kHz for the MC34063ACD) and ΔI is the peak-to-peak inductor current ripple (around 30% of the output current).