• RE: UC1845-SP: Change in Thermal Resistance from previous datasheet release?

  

  Daniel Hartung

  Hey Terry, We were able to do thermal modeling on the package and got the following values Thanks, Daniel

  • 3 months ago
  • Power management
  • Power management forum
Answered

• UC1845: the difference between UC1845 and UC2845

  

  Jack Li-SH

  Resolved

  Part Number: UC1845 Other Parts Discussed in Thread: UC2845 Dear sir, quick questions: Q1: what is the difference between UC1845 and UC2845, except for temperature? Q2: whether we have SOIC package of UC1845 now? Nice day! Regards, Jack

  • Resolved

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

• UC1845: EOL Tolerances for Feedback and Reference Voltage

  

  Alberto Gonzalez Marcano

  TI Thinks Resolved

  Part Number: UC1845 Hello, Is there any data regarding the feedback and reference voltages for the UC1845? Specifically, EOL tolerances for a worst-case analysis. If not anything similar?

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

• UC1845: possible error in model

  

  Andrew Boisvert

  TI Thinks Resolved

  Part Number: UC1845 I am trying to use the PSpice model for UC1845. I get an error when running the sim that V3 is missing a value. Is there an updated model available for this component?

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

• RE: UC2825: UC2825

  

  Aiswaria Lakhmi

  Hi, Thanks for your reply. We tried the simulation with UC1845 Which is from the same family. We tried pulling down SS pin. But The output voltage is bit high compared when the RT is pulled down.

  • 15 days ago
  • Power management
  • Power management forum
Answered

• UC1845A: Clarification on Capacitor Values for UC1845A

  

  Alok Shukla

  Resolved

  Part Number: UC1845A Other Parts Discussed in Thread: UC1845 Tool/software: Hi I have a few questions regarding the capacitor selection for the VCC and Vref pins of the UC1845A in our auxiliary power supply: Why is it recommended that the VCC capa…

  • Resolved

  • 1 month ago
  • Power management
  • Power management forum

• UC2845AQ: Device query

  

  Shinu.V.Mathew

  TI Thinks Resolved

  Part Number: UC2845AQ Other Parts Discussed in Thread: UC1845 , , UC1845A-EP Tool/software: Hi Team, UC2845AQ is rated for 125 Deg but here thermal resistance is higher than UC1845 CDIP and LCC package, How’s that possible? Also UC1845A-EP is rated…

  • 7 months ago
  • Power management
  • Power management forum
Answered

• WEBENCH® Tools/UC1845: UC1845

  

  Vikrant Sharma77

  Resolved

  Part Number: UC1845 Other Parts Discussed in Thread: LM431 , TIDA-070002 , Tool/software: WEBENCH® Design Tools Hello, I need to design an isolated, variable output power supply. Input voltage is 15 to 53VDC The output voltage is 2V to 50V, the output…

  • Resolved

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

• UC1845: how to pick RT/CT values

  

  Yue Wei91

  Resolved

  Part Number: UC1845 Hi, The UC1845 datasheet section 8.3.1.4 RT/CT provides a recommended range for timing resistor R_RT (5Kohm-100Kohm) and timing capacitor C_CT (1nF-100nF), so does it mean the recommended maximum oscillating frequency f_OSC is 1.72/(5Kohm…

  • Resolved

  • over 6 years ago
  • Space & High Reliability (Read Only)
  • Space & High Reliability Forum (Read Only)

• UC1845 1V peak current limit temperature coefficient

  

  Jay Carpenter83

  Other Parts Discussed in Thread: UC1845 Hello. Would anyone happen to have information on what the temperature coefficient of the 1V clamp inside the UC1845 chip is? I need to know if it increases or decreases with temp, and I can't seem to find any concrete…

  • over 9 years ago
  • Space & High Reliability (Read Only)
  • Space & High Reliability Forum (Read Only)

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