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LP5907 EN pin

Vincent Hsieh
Expert 1895 points
Other Parts Discussed in Thread: LP5907

Hi Sir,


About LP5907 EN pin is over 1.2V to turn on, but we had tested it, He will turn on about 1V.

We need over 1.2V, could you any idea for it?

  • 0
    TI__Mastermind 22610 points

    In the LP5907 datasheet Electrical Characteristics the min/max limits place the on/off thresholds somewhere between 0.4V (VIL) and 1.2V (VIL)

    In the LP5907 datasheet Typical Characteristics ' Figure 2. VEN Thresholds vs VIN ' shows typical Ven on/off thresholds.

    " ... We need over 1.2V ..."

    My best recommendation would be to use a resistor divider to increase the on/off thresholds. Perhaps 100-kOhm and 100-kOhm. Keep in mind that the LP5907 EN pin has internal 1-MegOhm pull-down that should be considered in your calculations.