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Showing 197 results View by: Thread Post Sort by
    Answered
  • LP8556: LP8556TME-E05 EEPROM

    taichi
    taichi
    Resolved
    Part Number: LP8556 Other Parts Discussed in Thread: LP8552 Hello, I ask about LP8556TME-E05. My customers hope to use their own settings of the product in EEPROM at the factory line and then load that setting. Q1. In the data sheet there is…
    • Resolved
    • over 7 years ago
    • Power management
    • Power management forum
  • Answered
  • LP8556: Write to EPROM

    T Kishi
    T Kishi
    Resolved
    Part Number: LP8556 Hi My customer has question. Can I change the content of EPROM for LP8556? The customer saves the contents once set and wants to maintain the setting contents even when VDD = 0. Regard T Kishi
    • Resolved
    • over 7 years ago
    • Power management
    • Power management forum
  • LP8556: Calculation spreadsheet / Design Tool / Drive capabilities

    Michael Gaechter
    Michael Gaechter
    TI Thinks Resolved
    Part Number: LP8556 Does a calculation spreadsheet or design tool for the LP8556 exist? I would need the LP8556 with the following configurations: Vin = 2.9 - 4.2VDC Vout = 10 white Leds in series per channel, 28 - 34VDC 1. 4 channels active with…
    • over 7 years ago
    • Power management
    • Power management forum
  • LP8556: Broken devices on the field : Power on constraints

    alexandre maurel
    alexandre maurel
    TI Thinks Resolved
    Part Number: LP8556 On a new project we have a bad feedback from the field as we have a lot of Lp8556 broken (on power on the Vldo is quiet null and becomes hot at 70°C without any regulation and no digital interface available). As the main power supply…
    • over 7 years ago
    • Power management
    • Power management forum
  • LP8556: EPROM Memory Map@Detailed description

    T Kishi
    T Kishi
    TI Thinks Resolved
    Part Number: LP8556 Hi My Customer has question. Is there a document that explains the operation of each register of "EPROM Memory MAP" of LP8556? There are some points that are not listed in the data sheet and I can not understand what kind of action…
    • over 7 years ago
    • Power management
    • Power management forum
  • Maximum LED current of LP8556

    Takahiro Nishizawa
    Takahiro Nishizawa
    TI Thinks Resolved
    Other Parts Discussed in Thread: LP8556 , LP8863-Q1 We have questions about LP8556. In datasheet p.1, Maximum LED current is 50mA. • Up to 50 mA Per Channel But in datasheet p.3 Device Options, Maximum LED current is 20/23/25mA Please…
    • over 7 years ago
    • Power management
    • Power management forum
  • Answered
  • LP8556: When use slope function, can't directly extinguish LED

    Bruce Lin_899
    Bruce Lin_899
    Resolved
    Part Number: LP8556 Hi Team My NB ODM customer use SLOPE function as 500mS, and when touch the power-off key, SOC will first give a BRT[7:0] value down to 0 first and then do the EN pin off or turn off BL_CTL function. But we will see the LED turn…
    • Resolved
    • over 7 years ago
    • Power management
    • Power management forum
  • LP8556: BL flicker issue

    Jeff Yang76
    Jeff Yang76
    TI Thinks Resolved
    Other Parts Discussed in Thread: LP8556 art Number: LP8556 Hi, We have meet LP8556 BL flicker issue, as initial verify result, seems it caused by output current ripple not stable. Even when Vin= 4.4V or 3.6V, current ripple ~15mA. And when Vin…
    • over 8 years ago
    • Power management
    • Power management forum
  • LP8556: EPROM Programming and Inductor selection

    Tony S
    Tony S
    TI Thinks Resolved
    Part Number: LP8556 Hello, I have a few questions that I need help answering. 1. Can TI pre-program the EPROM on the LP8556 for orders >2500? If it is possible, what information would need to be provided? 2. What are some suggested inductor part…
    • over 8 years ago
    • Power management
    • Power management forum
  • Answered
  • LP8556: VBOOST_RANGE

    K.Yaita
    K.Yaita
    Resolved
    Part Number: LP8556 Hi Team, I would like to ask about VBOOST_RANGE. Which is recommended VBOOST_RANGE=0 or VBOOST_RANGE=1 if VBOOST is 21V(TYP) in my customer's application? I would also like to know the reason. Best Regards, Yaita / Japan disty
    • Resolved
    • over 8 years ago
    • Power management
    • Power management forum
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