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Showing 82 results View by: Thread Post Sort by
    Answered
  • LM431: Anode to cathode voltage(VCA) in comparator mode operation

    Basil baby
    Basil baby
    Resolved
    Part Number: LM431 Other Parts Discussed in Thread: TL431 , Can someone help me to get the anode to cathode voltage of LM431A in comparator mode of operation? Thanks in advance. Basil
    • Resolved
    • over 4 years ago
    • Power management
    • Power management forum
  • LM431: Vout oscillation

    Jason Fan
    Jason Fan
    TI Thinks Resolved
    Part Number: LM431 Other Parts Discussed in Thread: TLV431A , TL431 , Hi Experts: i designed a reference voltage for the signal detection with LM431B , the schematic is below: Because the Cload selection could affect the Vout oscillation , i choose…
    • over 5 years ago
    • Power management
    • Power management forum
  • TIDA-01606: Reg Topology of TL431/LM431 used in the Gate driver card

    Caliber
    Caliber
    Part Number: TIDA-01606 Other Parts Discussed in Thread: LM431 , TIDA-01160 , , TL431 We have chosen isolated boost supply for gate driver with reference to TI Design (TIDA-10606 Gate Driver), Attached the TI Reference schematic In the design, LM431 have…
    • over 4 years ago
    • Simulation, hardware & system design tools
    • Simulation, hardware & system design tools forum
  • Answered
  • LM431: Question about the maximum ambient temperature

    Zhengquan Lu
    Zhengquan Lu
    Resolved
    Part Number: LM431 Other Parts Discussed in Thread: TL431LI Hi team, My customer use LM431 device for reference voltage, and the output signal is 2.85V/5mW. When test in the worst environment, the case temperature would be 93C and the ambient temperature…
    • Resolved
    • over 5 years ago
    • Power management
    • Power management forum
  • Answered
  • RE: Using adjustable LM4041 shunt voltage reference instead of LM431

    Marcoo Z
    Marcoo Z
    Resolved
    You are correct. I was under the impression you wanted to just directly replace the LM431. You have the correct way this device for comparator mode but it will have the 10V limit. If you are trying to lower Iq, I would recommend a low Iq reference …
    • over 5 years ago
    • Power management
    • Power management forum
  • LM431: Vref regulation voltage 2.6V instead of 2.5V

    Nadim Sakr
    Nadim Sakr
    TI Thinks Resolved
    Part Number: LM431 Other Parts Discussed in Thread: TL431 Hello, I am using the LM431BIM3 in the control loop of a flyback converter. However instead of having a Vref of 2.5V, i am measuring 2.6V instead which makes my output regulates at 12.6V instead…
    • over 5 years ago
    • Power management
    • Power management forum
  • RE: TINA/Spice/LM431: Shunt Regulator Model Issues

    Arpan Gupta
    Arpan Gupta
    Hi, We have simulated the circuit (Fig. 21) and found that results are expected. Below is the test circuit and simulation result. K= 2.502V*(1+10k/1.487k)+ 30.73nA*4.5k =19.3V Also, if we configure the device to test off state cathode current…
    • over 6 years ago
    • Simulation, hardware & system design tools
    • Simulation, hardware & system design tools forum
  • LM431: Stability Boundary Condition for High Iz condition

    Satoshi
    Satoshi
    TI Thinks Resolved
    Part Number: LM431 Other Parts Discussed in Thread: TL431 About stability boundary condition of LM431, datasheet P7 is described only Iz:10mA condition. Is there the other stability data for high Iz condition? (For example, Iz:22.5mA) Is LM431…
    • over 6 years ago
    • Power management
    • Power management forum
  • RE: LM431: Need Shunt voltage Regulation in our device

    Ethan T
    Ethan T
    Hi Navendu, I can help you out with this question. How much do you expect your load current to be? If it is less than 100mA, than a crowbar circuit is not necessary. The R_bias resistor will be the current limiting factor (resistor between voltage…
    • over 6 years ago
    • Power management
    • Power management forum
  • RE: LM431: Case temperature vs operating temperature

    murali kandasamy
    murali kandasamy
    Hi, The above is our application circuit. This is based on section 9.2.1 Shunt Regulator of the LM431 datasheet. A regulated output of 10V is derived from 15V. The R39 was increased from 47R to 68R to keep the cathode current within the 100mA limit…
    • over 7 years ago
    • Power management
    • Power management forum
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