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LMQ66430-Q1: [Compal]Schematic review

Part Number: LMQ66430-Q1
Other Parts Discussed in Thread: LMQ66430, LMQ66420

Hi Expert,

Could you help to review the schematic for LMQ66430-Q1?


輸入電壓Vin 12V

輸出電壓Vout 3.6V

Choke 2.2uH (Isat 5A)

power budget  2A


輸入電壓Vin 12V

輸出電壓 Vout 3.3V

Choke 2.2uH(Isat 5A)

power budget  2.5A




Choke 2.2uH(Isat 5A)

power budget  2.3A



  • Hello

    I will review and provide feedback by EOB on Thur. 2/1/2024 PST.


  • Hello

    Here are my comments:

    1. The equations given in the data sheet for the FB resistors provide bounds for those

    resistors and are not design equations.  The design equation for the FB divider is: Vout=Vref*(1+(Rfbt/Rfbb))

    The customer must adjust the FB divider to conform with all of these requirements.

    2. The MODE/SYNC pin can be connected to the VCC pin is desired.  Be aware that the maximum rating

    of the MODE/YNC pin is 5.5V.

    3. Where is the resistor on the PG pin terminated ?

    4. With very low output voltages, additional output capacitance may be needed.

    Please use Webench to provide design guidance to the customer.


  • Hello

    I will close this post due to inactivity.