• LM2704: Failure to Step Up Voltage to 12V

  

  NEWTON OLLENGO

  TI Thinks Resolved

  Part Number: LM2704 I developed the schematic based on the datasheet instructions but on testing it does not step up the voltage to 12V. I checked the Feedback voltage and it's 416mV. Therefore the output at the Schottky diode does. The Schematic is attached…

  • over 4 years ago
  • Power management
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Answered

• LM2704: Output voltage jump up to 30 V

  

  Volodymir Pugachov

  Resolved

  Part Number: LM2704 Hello. I am a newbie in DC/DC design, so have some problem with LM2704. Design requirements: Input voltage -- 3,3 V Output voltage -- 12 V Output current -- 40 mA max. Output load -- 2 relay coil, 20 mA per one. Main purpose of this…

  • Resolved

  • over 6 years ago
  • Power management
  • Power management forum
Answered

• RE: LM27403: LM27403 10ms shutdown when load > 10A

  

  Electronnuts

  Resolved

  Thanks, we have been using that tool. Switch freq is at 650khz with 86khz crossover and 56 degrees phase margin. So I'm pretty sure low phase margin is also not the issue. We have the Current sense resistors wired as shown in Figure 9.2.2 in the LM27403…

  • over 7 years ago
  • Power management
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• RE: LM120: Need PDN (Part Discontinuation Notice) for obsolete LM120K-5.0 version of base part and also need its replacement or a cross

  

  Aaron Paxton

  Hey Dan, LM120K-5.0/883 is indeed obsolete. I've attached the PDN. We don't have an exact P2P replacement so I'd recommend the UA79 series as the closest alternatives. ~ Aaron PDN 200824.pdf

  • over 6 years ago
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