MC34733 - Multicomp Pro

MC34733 Frequently Asked Questions (FAQs)

• What is the recommended layout and placement for the MC34733?
  The recommended layout and placement for the MC34733 involves keeping the input and output capacitors close to the IC, using a solid ground plane, and minimizing the distance between the IC and the battery. A 4-layer PCB is recommended, with the top layer for signals, the second layer for the power plane, the third layer for the ground plane, and the bottom layer for the signals.
• How do I optimize the MC34733 for low quiescent current?
  To optimize the MC34733 for low quiescent current, ensure that the EN pin is properly biased, use a low-value resistor for RSET, and minimize the voltage drop across the internal LDO. Additionally, consider using a low-power mode or shutdown mode when the device is not in use.
• What is the maximum input voltage that the MC34733 can handle?
  The MC34733 can handle input voltages up to 28V, but it's recommended to keep the input voltage below 24V to ensure reliable operation and prevent damage to the IC.
• How do I configure the MC34733 for a specific output voltage?
  The output voltage of the MC34733 can be configured by selecting the appropriate resistors for R1 and R2. Use the formula VOUT = 1.25V x (1 + R2/R1) to calculate the required resistor values for the desired output voltage.
• What is the thermal shutdown temperature of the MC34733?
  The thermal shutdown temperature of the MC34733 is typically around 150°C to 160°C. When the junction temperature exceeds this threshold, the IC will shut down to prevent damage.