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  • LM3881: Pull up resister for FLAG pin

    Resolved
    Part Number: LM3881 Hello support-team, My customer inquires pull up resister value on FLAG pin. What is min recommended resister value? They would like to use 39kohm and pull up voltage is 3.3V. Thanks, Koji Ikeda
    • Resolved

  • LM3881: Lower limit of pullup resistance

    TI Thinks Resolved
    Part Number: LM3881 Other Parts Discussed in Thread: LM3880 Hi Support Team, My customer is thinking about the pullup resistors of FLAG1, FLAG2 and FLAG3. The datasheet says that the resistors of 100 kOhm are recommended. They would like to reduce the…

  • TPS23753A: How to fulfill the power up sequence and power down sequence of LM3881.

    TI Thinks Resolved
    Part Number: TPS23753A Other Parts Discussed in Thread: LM3881 , LM3880 I want to input the output (+5.0V DC) of the TPS23257A to the VCC pin of the LM3881 to satisfy the power supply rising sequence and power supply falling sequence. We have already confirmed…

  • LM3881: Low Level Max Voltage

    TI Thinks Resolved
    Part Number: LM3881 Hi Team, My customer wants to use LM3881 to drive a IC, which needs a voltage threshold of 0.2V. If the low level max voltage is 0.4V, this will not work for the design. Is itpossible to drive the LM3881 low level max voltage less…

  • [FAQ] LM3881: What is the minimum and maximum capacitance for Cadj for LM3881?

    Part Number: LM3881 The minimum capacitance value for Cadj is 200pF and the maximum is 2uF. For more LM388x FAQ click or type the tag in the search bar [FAQ] LM388x .
    • Answered

  • LM3881: Abnormal operation, Assert EN before VCC

    Resolved
    Part Number: LM3881 Hello team, I understand that the recommended behavior is to assert EN after powering the VCC. But I'd like to confirm abnormal operation that is assert EN before VCC. In the case of the assert EN before VCC, the LM3881 has a leak…
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    • Answered

  • LM3881: looking for 4 rail power sequencer

    Resolved
    Part Number: LM3881 Other Parts Discussed in Thread: UCD9081 , UCD9090 the LM3881 is a 3 rail power sequencer... I need to sequence 4 rails, can you recommend a similar part that does this?
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    • Answered

  • LM3881: recommended MIN Delay time

    Resolved
    Part Number: LM3881 Hello Support team, My customer would like to set less than 100usec of LM3881 delay time. Is this feasible? Thanks, Koji Ikeda
    • Resolved

  • LM3881: Maximum delay time

    TI Thinks Resolved
    Part Number: LM3881 Hello, Is there a maximum delay time that can be set? I am trying to set a 200ms delay between Flag 1 and Flag 2, so by my calculation that would require a 25ms clock cycle and then a ~210nF capacitor. Just want to make sure that…
    • Answered

  • LM3881: About the pull-up resistor of LM3881

    Resolved
    Part Number: LM3881 Hi There, We are considering the adoption of "LM3881MME/NOPB". The reference circuit is pulled up with 100kΩ. (Figure 18. Typical Application Circuit) There is no description of the output current(IOL) for the FLAG*…
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