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LP5907: About LP5907MFX-3.0 / NOPB

user6181012
Prodigy 250 points
Part Number: LP5907

Hello everyone

Please tell me the following about LP5907MFX-3.0 / NOPB.
1.For Figure 9. Inrush Current on page 9 of the datasheet,
   what is the Inrush Current when the VIN and VEN active timings are not equal?
2.About LP5907MFX-3.0 / NOPB Please tell me the range of input voltage and output voltage.
Please tell me information.
Best regards
  • 0
    TI__Mastermind 29260 points

    Hello,

    The inrush current will be at its worse value when Vin = Ven because the source supply has to charge up both Cin and Cout, as well as deliver any load current that is necessary during turn on.  The inrush will be less than this if you enable the LP5907 after Vin has reach steady state.  The exact value of the inrush will depend on the value of Cin and Cout.  If Cin is large with respect to Cout then much of the inrush current is handled by the transfer of charge from Cin to Cout, and the peak inrush will be lower from the source supply.

    The part number provided (LP5907MFX-3.0 / NOPB) is a fixed 3V output with steady state tolerances of +/- 2%. As shown below the maximum Vin is 6V and the recommended max is 5.5V.

    Thanks,

    - Stephen