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LM5141-Q1: About LM5141-Q1 operation in DEMB / OCS / EN / VOUT open condition

Tsukui Yusuke
Guru 21930 points
Part Number: LM5141-Q1

Hi,

Customer wants the following information for evaluation of application.

1.DEMB pin open condition
　 Please tell me the operation of LM5141-Q1 under these conditions.

2.OCS pin open condition
　 Please tell me the operation of LM5141-Q1 under these conditions.

3.EN pin open condition
   Please tell me the operation of LM5141-Q1 under these conditions.

4.VOUT pin open condition
   Please tell me the operation of LM5141-Q1 under these conditions.



Could you give me your advice?

Best Regards,
Yusuke/Japan Disty

  • 0
    TI__Mastermind 40040 points
    Hello Yusuke,

    See answers/responses below.

    1. DEMB open - no pull up, pull down, DEMB mode undefined, part will still function.
    2. Osc Open - undefined, If OSC is <0.8V at startup fs =440kHz, If OSC>2.0V fs=2.2MHz
    3. EN pin open condition - No Output EN voltage must be > 2.0V to enable part
    4. VOUT pin open condition - Vout 0V, Unable to sense inductor current.

    Hope this helps?

    David.