MC34063ADRE4 datasheet by Texas Instruments

MC34063ADRE4 Frequently Asked Questions (FAQs)

• What is the maximum input voltage that can be applied to the MC34063ADRE4?
  The maximum input voltage that can be applied to the MC34063ADRE4 is 40V, but it's recommended to keep it below 35V for reliable operation.
• How do I ensure the MC34063ADRE4 operates in continuous conduction mode (CCM)?
  To ensure CCM operation, the inductor value should be chosen such that the inductor current ripple is less than 30% of the output current. Additionally, the output capacitor should be large enough to filter the output voltage ripple.
• What is the purpose of the internal 2.5V reference voltage (VREF) in the MC34063ADRE4?
  The internal 2.5V reference voltage (VREF) is used to generate the oscillator frequency and to regulate the output voltage. It's also available as an output (pin 16) for external use, such as biasing external components.
• How do I calculate the output voltage of the MC34063ADRE4?
  The output voltage (VOUT) can be calculated using the formula: VOUT = VREF x (1 + R1/R2), where R1 and R2 are the feedback resistors connected between the output and the feedback pin (pin 5).
• What is the maximum output current that the MC34063ADRE4 can deliver?
  The maximum output current that the MC34063ADRE4 can deliver is 1.5A, but it's recommended to keep it below 1.2A for reliable operation and to prevent overheating.