• LM70840-Q1: Maximum value of Ruv1 and Ruv2?

  

  Timo Keck

  Part Number: LM70840-Q1 Tool/software: What is the minimum current that have to flow into pin 9 (EN/UVLO)? Or in other words: How high can be the maximum value of Ruv1 and Ruv2? Are the values 866K and 221K okay? Background: The current from Vin via Ruv1…

  • 20 hours ago
  • Power management
  • Power management forum

• LM70840-Q1: Regarding Shunt Resistor

  

  Danish Malhotra

  TI Thinks Resolved

  Part Number: LM70840-Q1 Tool/software: Hello Team, We are planning to use the LM70840-Q1 buck converter in our product. We have a query regarding the shunt resistor (Rs) recommended in the design. If we don't want to use the sensing functionality, what…

  • 2 months ago
  • Power management
  • Power management forum

• LM70840-Q1: Issues with noisy power line and odd behavior when the IC is touched by finger.

  

  NIcolas Gallardo

  TI Thinks Resolved

  Part Number: LM70840-Q1 Tool/software: Hello, I have implemented LM70840QRRXRQ1 into my design to buck 48V to 18V @ 3A. when pulling ~18V/500mA or more, The 18V rail becomes very noisy and uncontrolled and there is an audible whining that I believe is…

  • 1 month ago
  • Power management
  • Power management forum

• RE: LM70840-Q1: Functional Safety(Safety Manual, Failure Mode, Fit Rate)

  

  Ben C

  Hi Luke, Are there any updates? If not, go ahead and close (by clicking on resolved) the thread and you can open up a new one once there is feedback from the customer. Ben

  • 2 months ago
  • Power management
  • Power management forum

• LM76003-Q1: Synchronizing two LM76003-Q1 to a LM70840, is this possible?

  

  Conrad Seymour

  TI Thinks Resolved

  Part Number: LM76003-Q1 Other Parts Discussed in Thread: LM76003 , LM70840 , Tool/software: We would like to have 3 power supplies running off 48V, creating 5V, 3.3V, and 24V. We were considering creating the 5V with a LM70840, starting up 1st, followed…

  • 2 months ago
  • Power management
  • Power management forum

• RE: LM76005: LM76005 high Vin

  

  Timothy Hegarty

  Try the LM70840 80V/4A converter instead for increased input voltage margin (and better efficiency as well). https://www.ti.com/product/LM70840-Q1

  • 3 months ago
  • Power management
  • Power management forum

• RE: LM5576: Replacement for UAV application

  

  En Dy

  Thank you, LM70840-Q1 seems to be out of stock however.

  • 4 months ago
  • Power management
  • Power management forum

• RE: LM76005-Q1: I am looking at the gain-phase graph from the Webench report, the phase margin reported in report seems incorrect to me?

  

  Conrad Seymour

  I was wondering where I can find the quickstart calclulators. Is there one for the LM76003 and LM76002 also? We are also looking at the LM70840, LM70860, LM70880 family of devices. The datasheet does not give the device geometries, and the Webench tool…

  • 3 months ago
  • Power management
  • Power management forum

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