Answered

• UC2844A: UC2844AQD8R operating temperature range

  

  Eduardo Hernandez

  Resolved

  Part Number: UC2844A Tool/software: Hello, We have a question about what would be the operating temperature range of part number UC2844AQD8R ? It has the "Q" on the PN, rating automotive. The website says operating temperature range (°C)…

  • Resolved

  • 2 months ago
  • Power management
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• UC2844A: Vref, min and max values

  

  Jonathan Navor

  TI Thinks Resolved

  Part Number: UC2844A Tool/software: Hi Experts, Good day! I have a question regarding your product UC2844AD8TR. I am doing alright. Thank you. My question is about the V_Ref pin of this part. Based on the block diagram from the datasheet…

  • 6 months ago
  • Power management
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Answered

• UC2844A: Oscillation frequency variation

  

  Kaji@PAN

  Resolved

  Part Number: UC2844A Hello, I am an FAE for a distributor that handles TI products. I received a question from a customer about the variation in oscillation frequency of the UC2844AN. Main conditions are described below. (Question 1) Is it correct to use…

  • Resolved

  • over 2 years ago
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Answered

• UC2844A: Is there any product corresponding to UC2844

  

  Bao Songhao

  Resolved

  Part Number: UC2844A Other Parts Discussed in Thread: UC2844 , UCC28C44 Is there any product corresponding to UC2844

  • Resolved

  • over 2 years ago
  • Power management
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• UC2844A: Ambient Temp in Recommended Operating Conditions

  

  Brian Wang0928

  TI Thinks Resolved

  Part Number: UC2844A Other Parts Discussed in Thread: UCC28C44 Customer is confused why there is "no ambient temp range" shown on the Recommended Operating Conditions and also that Junction temp is only specified with -40degee to 105degree? Is there missing…

  • over 2 years ago
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• UC2844A: Soft start

  

  Brian Wang0928

  TI Thinks Resolved

  Part Number: UC2844A Below is existing configuration for soft-start DR425:33K and DC422:10uF In the d/s, it says the Rss and Css. is there application addressing how to calculate it? Since the Vds peak voltage is too high during startup, we'd like…

  • over 2 years ago
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Answered

• UC2844A: Device Usage Consult

  

  Stanley Dai

  Resolved

  Part Number: UC2844A Hi Team, Customer has several device questions needing your helps, pls help us here. Thanks. 1. What's the typical forward voltage drop for below red frame diode in the functional block? 2. How to get below equation 1.7V in theory…

  • Resolved

  • over 2 years ago
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Answered

• UC2844A: SMPS Design: UC2844 is it recommended for new design

  

  Mukesh Chaudhary

  Resolved

  Part Number: UC2844A Other Parts Discussed in Thread: UC2844 Hi, Planning to make new SMPS design, previously had used UC2844 and external FET, in almost all of my Flyback converter design(20-60W) since last few years. Input voltage range: 200VDC to 800VDC…

  • Resolved

  • over 3 years ago
  • Power management
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• UC2844A: UVLO Threshold

  

  Yazhu Liu

  TI Thinks Resolved

  Part Number: UC2844A Hi Team, My customer notice that for UC2844A UVLO "start threshold" and "minimum operation voltage after turnon", there's a min~max range, and they want to know is there any logic behind these values? Like the devices with 15V start…

  • over 3 years ago
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• UC2844A: RT/CT pin threshold voltage for the device to start oscillate

  

  Yazhu Liu

  TI Thinks Resolved

  Part Number: UC2844A Hi Team, May I ask if we have the value of UC2844A RT/CT pin threshold voltage for the device to start oscillate? I cannot find such value in the datasheet. Thanks. Best Regards, Livia

  • over 4 years ago
  • Power management
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