Answered

• LM317: LDO with better PSRR than LM317 (SOT223) / LM337 (SOT223)

  

  Wendy Wang1

  Resolved

  Part Number: LM317 Other Parts Discussed in Thread: LM337 , LM340 , LM7800 Hi team, Do we have upgrade device of LM317 (SOT223) / LM337 (SOT223)? Like device with better PSRR? Thank you for your help! Best regards, Wendy

  • Resolved

  • 17 days ago
  • Power management
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• LM317: convert 110~140V input to 100V/0.1A output with LM317

  

  Wayne Wang20

  TI Thinks Resolved

  Part Number: LM317 Hi team, My customer wants to convert 110~140V input to 100V/0.1A output with a LDO. The high voltage LDO is too expensive so customer wants to use LM317 to do a low cost solution. But LM317's max input voltage is less than 110V. So…

  • 2 months ago
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Answered

• RE: LM317: About the output current capacity of LM317 and LM337

  

  Yatao Ling1

  Resolved

  Hi Jason, OK! Then in this condition, LM317 is outputting Vout*Iout = 24W to its load. is this correct? :-) Best Regards Yatao

  • 3 months ago
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• LM317: Output voltage observed even after input is made 0

  

  Manish Sharma2

  Part Number: LM317 Hi, I am using LM317 to convert 5V to 3.6V (schematic shown below) When I made input 5V to 0 after some time, still i am getting 1.5 V at the output which is present for some 2-3 seconds before getting 0. Please let me know the reason…

  • 1 month ago
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Answered

• RE: LM317: if the input voltage can be bigger than 40V and why Vo is limited to “37V”

  

  Owen Yan

  Resolved

  Hi Stephen, Thanks a lot for your work!! Can I switch the 270k resistor to 2.7Mohm to achieve the same result of 100uF capacitor? And about the rise time of Vo(LM317), I think Cadj may help to make it faster. For a high Vo, the existence of Cadj make…

  • 15 days ago
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• LM317L: LM317 Input Surge Protection

  

  Amarnath Murugadass

  TI Thinks Resolved

  Part Number: LM317L Other Parts Discussed in Thread: LM317 Hi Team, We are using LM317 device in a 24V power line (16V to 37V) which may face surge/EFT/ESD transients. We are planning to get 12V output from the LDO resulting in a maximum Vo-Vi value of…

  • 3 months ago
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Answered

• LM317: LM317S/NOPB vs. LM317SX/NOPB

  

  joe306

  Resolved

  Part Number: LM317 Hello, what is the difference between the LM317S/NOPB and the LM317SX/NOPB? Thank you, Joe

  • Resolved

  • 7 months ago
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• RE: LM317: Where should LM317KTTR's thermal pad be connected?

  

  Jason Song

  Hi Takahashi-san, I have reviewed the bonding diagram, and I believe for LM317, this is a floating LDO with no GND pin and the thermal pad is actually part of the OUTPUT metal that will be connected to the OUTPUT. Regards, Jason Song

  • 2 months ago
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Answered

• LM317: ABS of Vi/Vo

  

  Yasushi Fujiwara

  Resolved

  Part Number: LM317 Hello Experts, I would like to know whether this device has limitation between Vi/Vo to GND. The datasheet is only specified the ABS of Vin - Vo. I would like to use a following condition. Is it possible to use LM317 for this condition…

  • Resolved

  • 3 months ago
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Answered

• LM317A: LM317 as a current source

  

  Andrew Coad

  Resolved

  Part Number: LM317A Other Parts Discussed in Thread: LM317 , Hi, Probably something obvious that I'm not seeing. I want to use the LM317 as a current source to drive 10mA through a set of resistors and hence set a specific voltage at each resistor junction…

  • Resolved

  • 3 months ago
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