• LM3940: Need spice model for simulation

  

  Sundar Raj A

  Part Number: LM3940 Tool/software: Please share the Spice model for LM3940IMP-3.3/NOPB IC and If you have calculation sheet for this IC please share, Thank you in advance

  • 1 month ago
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• LM3940: LM3940IMP-3.3/NOPB Ig calculation for Heat sink.

  

  Sathya Priya

  TI Thinks Resolved

  Part Number: LM3940 Hi Team, We are using LM3940IMP-3.3/NOPB this LDO in our design. Our requirement: 5V to 3.3V @1A We need to know how to decide Heatsink need to be added or not? We seen the formula in datasheet. But we don't get the value…

  • over 2 years ago
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Answered

• LM3940: Equivalent Series Resistance

  

  Sean Maniar

  Resolved

  Part Number: LM3940 Other Parts Discussed in Thread: TMP302 , TLV755P I have a few questions about a design I'm creating using the LM3940 voltage regulator to power the TMP302 temperature switch. The first question is very straightforward. For the…

  • Resolved

  • over 2 years ago
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Answered

• LM3940: LM3940

  

  Abhishek Singh2

  Resolved

  Part Number: LM3940 Hello, I 'm using LM3940 in my project to generate 3.3 V supply for a microcontroller. The input is 5.2 V. For the initial period after assembly this IC was giving me 3.28 V, but now it is showing 3.7 V output which is out of the…

  • Resolved

  • over 4 years ago
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Answered

• WEBENCH® Tools/LM3940: LM3940

  

  DHIREN SAHOO

  Resolved

  Part Number: LM3940 Tool/software: WEBENCH® Design Tools Hi, Need to know the efficiency of LM3940 LDO. or any application note or formula for efficiency calculation. generally i take 65 to 70% efficiency for LDO. but i need to know the efficiecny…

  • Resolved

  • over 5 years ago
  • Simulation, hardware & system design tools
  • Simulation, hardware & system design tools forum

• LM3940: LDO

  

  Abhishek Singh2

  Part Number: LM3940 Hello, I 'm using LM3940 in my project to generate 3.3 V supply for a microcontroller. The input is 5.2 V. For the initial period after assembly this IC was giving me 3.28 V, but now it is showing 3.7 V output which is out of the…

  • over 4 years ago
  • Power management
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Answered

• LM3940: LM3940 minimum load requirement

  

  user3942675

  Resolved

  Part Number: LM3940 Hello everyone, Does the LM3940 have a minimum load requirement? My LM3940 outputs about 4V but I do not know why. Best regards, Keiichi

  • Resolved

  • over 6 years ago
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• RE: TINA/Spice/LM3940: LM3940

  

  Imran Dharwad

  Hi Nandini, Thanks for contacting TI. Sorry, currently we do not have a model for this device, but you can go to www.ti.com/spicerack and search for similar devices having models using the search box.

  • over 6 years ago
  • Simulation, hardware & system design tools
  • Simulation, hardware & system design tools forum

• RE: LM3940: LM3940(3.3V), LP388585-1.2, LP38512-1.8 regulators issue

  

  Ryan Eslinger

  Hi Murali, In order to help identify pin to pin replacements, which package are you using? LM3940 has multiple packages. Please provide the following information: Full part number being used: Vin: Iout when fully loaded: Very Respectfully,…

  • over 7 years ago
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• LM3940: stability

  

  Allan Fan

  TI Thinks Resolved

  Part Number: LM3940 Team, Customer already used LM3940 but not satisfied the noise performance. By adding more output caps, it seems help but become non-stable. Figure 12 in datasheet only shows Cout = 33uF stable region. Could you please provide more…

  • over 7 years ago
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