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  Ding Li

  • 11 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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  Clemens Ladisch

  • 1 month ago
  • Amplifiers
  • Amplifiers forum

  RE: ISO124: Application doubt

  The recommended operating conditions table says that you need to use split power supplies. If you have only a single supply, you can generate a virtual ground; see Single-Supply Operation of Isolation Amplifiers for examples (but replace the Zener with...
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  Llewellyn Dsa

  • 1 month ago
  • Power management
  • Power management forum

  RE: TL431: ACDBZR

  Hello Marco, There is no specific frequency of Interest, we need it in General. From the 12.6V rail, there is a connector which connects to the Input of a Rail to Rail - DC-DC Buck converter, 1 feet away. Now at the Input of the Buck converter,...
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  Arnaud49927

  • 2 months ago
  • Power management
  • Power management forum

  RE: TL431LI-Q1: Spice Simulation Model : Worst-Case + Propagation delay issue

  Hello Marcoo, First, thank you for your answering. Regarding your suggestion of using the ATL431LI instead of the TL431, I would rather stay with the TL431LI as it is the only one which has a grade-0 option (+150°C max ambient operating temperature...
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  Marcoo Z

  • 3 months ago
  • Power management
  • Power management forum

  RE: TL432: Consult for Iz and VIN

  Hi Charles, 1. We do not guarantee a maximum IKA(min) at 85C but from my experience it will be closer to 0.7mA. I would bias the TL431 minimum at 1.5x Ika(min) at 25C max to take into account temperature variations and lot to lot variation. If you need...
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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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  dox

  • 8 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

  • 9 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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  Marcoo Z

  • 10 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

  • 4 months 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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