• LM3489: LM3489 Too High Frequency

  

  Luke Knepp

  Part Number: LM3489 1047 V2 Schematic.pdf Is there an issue with placing a capacitor across the bottom feedback resistor on the LM3489? I had this circuit and it was trying to switch at 1.5-2MHz, so I added a 470pF across R6 to slow it down and it…

  • 1 month ago
  • Power management
  • Power management forum

• LM3489: LM3489

  

  Nirali Shah

  TI Thinks Resolved

  Part Number: LM3489 Other Parts Discussed in Thread: TIDA-050014 Tool/software: LM3489QMM/NOPB: Request to check the circuit Product Link I would like you to check the circuit. Input voltage: 5V , 12V , 24V (Battery , USB , Adapter) Output voltage…

  • over 2 years ago
  • Power management
  • Power management forum

• LM3489: LM3489

  

  Christopher Lenihan

  TI Thinks Resolved

  Part Number: LM3489 LM3489 is not supported on TI Webench. do you guys have an Excel sheet calculation tool that will help pick out the appropriate discreate parts?

  • over 2 years ago
  • Power management
  • Power management forum
Answered

• LM3489: Pass Thru, VIN=VOUT

  

  Bahar Bülbül

  Resolved

  Part Number: LM3489 Tool/software: Hello, I am planning to use LM3489 for a 24V input - variable output (5V/12V/24V) application. My question would be if it is possible to have 24V in - 24V out application (pass thru power) with LM3489? Or what…

  • Resolved

  • over 1 year ago
  • Power management
  • Power management forum

• LM3489: Pmos Controller recommendation

  

  Lillian Liu(SH)

  TI Thinks Resolved

  Part Number: LM3489 Other Parts Discussed in Thread: LM25085 Tool/software: Hi team, Could you help recommend suitable Pmos Controller? PMOS controller topology：Buck Vin：4.5-35V I：1A Operating temp：125℃ Iq max：400uA Duty cycle max：100% Other：enable…

  • over 1 year ago
  • Power management
  • Power management forum

• LM3489: LM3489QMMX S7002106

  

  Muthukrishnan M

  TI Thinks Resolved

  Part Number: LM3489 Tool/software: Hello Team, Could you please find the nomenclature of the part# LM3489QMMX S7002106. Regards, Muthukrishnan M

  • over 1 year ago
  • Logic
  • Logic forum

• LM3489-Q1: current limit at 100%duty cycle

  

  Martin Steube-Henkel

  TI Thinks Resolved

  Part Number: LM3489-Q1 Other Parts Discussed in Thread: LM3489 , LM3489EVAL Tool/software: Hello our customer Forvia is using LM3489 to charge a supercap (4x25F in series) Vin=12V Vout=10V Iout=8A Below is the test result waveform of the…

  • over 1 year ago
  • Power management
  • Power management forum

• LM3489: Urgent Request: Review and Guidance on LM3489 Output Voltage Issue

  

  SHH

  Part Number: LM3489 Dear Team, Our customer has incorporated the LM3489 in a significant Dell project. For this setup, the compatibility test for output power needs to achieve a specification of 20V/9A for a sustained duration of 10ms. Currently…

  • over 3 years ago
  • Power management
  • Power management forum

• LM3489: Asking for LM3489 audible noise design review and suggestions

  

  SHH

  TI Thinks Resolved

  Part Number: LM3489 Hi Team, Customer would change the output cap to increase the output cap value to avoid the audible noise while charging NB. C7202 change to 220uF C7713 change to 100uF https://e2e.ti.com/support/power-management-group…

  • over 3 years ago
  • Power management
  • Power management forum
Answered

• LM3489: Asking for LM3489 slew rate calculation formula

  

  SHH

  Resolved

  Part Number: LM3489 Hi Team, customer asked how to calculate the slew rate by changing the capacitor. would you please help? Here is the previously E2E post. https://e2e.ti.com/support/power-management-group/power-management/f/power-management…

  • Resolved

  • over 3 years ago
  • Power management
  • Power management forum

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