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  Ding Li

  • 8 months ago
  • Power management
  • Power management forum

  ATL431LI: max sink current

  • Resolved

  Part Number: ATL431LI For ATL431LI , DQN package (X2SON (4)), at 9V cathode voltage, board temp 70C
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  dox

  • 4 months ago
  • Power management
  • Power management forum

  RE: ATL431: PSpice model problems...

  Marcoo, I replaced the symbol and model in my "simple simulation" with the ATL431LI and obtained values of 200.0, 166.5 and 163.1V for the "right side" diagram. This model apparently also has a bug (the cathode-to-anode voltage should...
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  Marcoo Z

  • 29 days ago
  • Power management
  • Power management forum

  RE: TL432: TL432 startup

  Hi User, Your calculation seems fine. Keep in mind that graph assumes the TL431 is biased correctly. I would not say that the VREF is higher than VKA when VKA is lower than the internal VREF but instead the VREF pin does not conduct current when VKA...
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  Marcoo Z

  • 6 months ago
  • Power management
  • Power management forum

  RE: TL431: What's the grade of TI/TL431AQDBZR? How to adjust Vref to 3.3V?

  Hi Marx, Try the values below R0332 = 550 R0333 = 15k R0334 = 47k. I designed it around common resistor values. The R0332 is small enough to allow 3mA into the TL431 with 2mA for biasing and 1mA for the load. The minimum Ika for the TL431...
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  Jeff Xie

  • over 1 year ago
  • Power management
  • Power management forum

  RE: ATL431LI: For Li battery in 3.3V out application

  Hi Marcoo, just want to try a low cost solution.
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  Marcoo Z

  • 6 months ago
  • Power management
  • Power management forum

  RE: TIny 4.1V Volt Ref

  Hi Adam, How much accuracy do you need on your reference? Would a ATL431LI in X2SON work? -Marcoo
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  Marcoo Z

  • 7 months ago
  • Power management
  • Power management forum

  RE: TL431: TL431

  Hi Ian, I would recomend to use figure 31 from the datasheet. This is a combination of the TL431 + A BJT to allow for higher current. The main current paths will be the Ika through the TL431 and the Ice through the BJT. The Ika current can be controlled...
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  Marcoo Z

  • 5 months ago
  • Power management
  • Power management forum

  RE: TL431: Voltage monitoring circuit

  Hi Muhammad, Reducing R6 R7 and R8 will lower the voltage drop due to the leakage current because the TL431 is not fully off as per the app note which works. If you want to save IQ. I would suggest a ATL431 or ATL431LI which have much lower leakage...
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  Marcoo Z

  • 10 months ago
  • Power management
  • Power management forum

  RE: LM385-ADJ: Conflict of LM385-ADJ spice model and LM385-ADJ datasheet

  Hi Sun, The datasheet should be correct. I have ordered some devices of this flavor because I do not have them currently. I can try this Is there a reason you want to use a LM385 vs a LM4041-ADJ or ATL431LI? I can confirm that both of those devices...
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  Abhinav.Sharma

  • 11 months ago
  • Power management
  • Power management forum

  RE: ATL431: Vref Accuracy

  Kuramochi-san, Please observe this paragraph below, this better highlights the variation across temperature and what goes into this. In addition, I want to highlight our ATL431LI here, this device allows for even better accuracy of Vref and should...

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