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Satoshi
over 2 years ago
Power management
Power management forum
LM431: Stability Boundary Condition for High Iz condition
TI Thinks Resolved
Part Number:
LM431
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
applicable below design calculator? ...
Arpan Gupta
over 2 years ago
Simulation, hardware & system design tools
Simulation, hardware & system design tools forum
RE: TINA/Spice/LM431: Shunt Regulator Model Issues
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...
Ethan T
over 2 years ago
Power management
Power management forum
RE: LM431: Need Shunt voltage Regulation in our device
Hi Navendu, I am a little confused on why there are three crowbar circuits. Can you explain to me the application again. I may misunderstood something and the crowbar circuit may not be the best solution. Is the
LM431
used to regulate to 5.7V? What...
leo kors86
over 2 years ago
Power management
Power management forum
LM431: LM431 partnumber
Resolved
Part Number:
LM431
i need a
LM431
0,5% sot23 -40 to 85 but can not find it anywhere
Michael Pahl
over 1 year ago
Power management
Power management forum
RE: TPS23753A: The VC and GATE are unstable in TPS23753A
Hello David, Thank you for providing the schematic. I am sorry to hear a board got damaged. The BAV99 is designed to have a small forward voltage, large breakdown voltage, and low capacitance. When hooked in the original configuration, it looks...
Sudharsan K
over 3 years ago
Power management
Power management forum
RE: LM431: Output Voltage oscillates by 20mV against Set point of 10V.
Hi Kai & Marcoo, Thanks for your support. We would try the recommended testing conditions.
David Baba
over 1 year ago
Power management
Power management forum
RE: LM5117: CC/CV maximum voltage CC for 57 V input
Hello Jason, can you measure the voltage at the Anode of the reference? I am estimating 0.8V+0.35V+2.5V = 3.65V at the ref pin of the
LM431
. With a 10k bottom FB resistor the top FB resistor should be 113k. The device will clamp to around...
murali kandasamy
over 3 years ago
Power management
Power management forum
RE: LM431: Case temperature vs operating temperature
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...
Liang Han
over 4 years ago
Power management
Power management forum
LM431 oscillation
Resolved
I have an design with
LM431
. It seems have oscillation which burn off the current limiting resistor
Pokkun
over 4 years ago
Power management
Power management forum
Could you tell me about LM431's "Fast Turnon Response"?
I'm sorry. Since I have not been replying, I will post the same post. -------------------------------------------------------------------------------------------------------- Hello. My customer is evaluating for the purpose of adopting
LM431
...
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