LM3402HVMM datasheet by Texas Instruments

LM3402HVMM Frequently Asked Questions (FAQs)

• What is the maximum input voltage that can be applied to the LM3402HVMM?
  The maximum input voltage that can be applied to the LM3402HVMM is 42V, but it's recommended to keep it below 40V for reliable operation.
• How do I ensure the LM3402HVMM is stable and doesn't oscillate?
  To ensure stability, make sure to follow the recommended layout and component placement guidelines, use a minimum output capacitance of 10uF, and avoid using long traces or wires that can cause parasitic inductance.
• Can I use the LM3402HVMM in a high-temperature environment?
  Yes, the LM3402HVMM is rated for operation up to 125°C, but the maximum junction temperature (TJ) should not exceed 150°C. Make sure to follow the thermal design guidelines and consider derating the device for high-temperature applications.
• How do I calculate the output voltage ripple of the LM3402HVMM?
  The output voltage ripple can be calculated using the formula: ΔVout = (Iout * ESL) / (Cout * fsw), where ESL is the equivalent series inductance of the output capacitor, Cout is the output capacitance, and fsw is the switching frequency.
• Can I use the LM3402HVMM in a low-input-voltage application?
  Yes, the LM3402HVMM can operate with input voltages as low as 6V, but the minimum input voltage should be at least 1V above the desired output voltage to ensure proper regulation.