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  • RE: LP8556: A boost LED driver with individual segment control

    Hi Matt, Do you have more questions related to LP8556? Regards H L

  • LP8556: Does`t I2C register be saved ? or I2C programming has been initial every time ?

    TI Thinks Resolved
    Part Number: LP8556 Hi SIR,. WE use LP8556-E02 with I2C programmable and register on device, but register was lost once every system shutdown. does LP8556 has been initial every time ? how controller do channel count if one was reserved? thank …
    • Answered

  • LP8556: VBOOST of CFG6 (A6h) register

    Resolved
    Part Number: LP8556 Hi Team, My customer considers to use "Adaptive Boost Voltage Control". How to calculate specific boost output voltage [V] from VBOOST[5:0] of CFG6 register? Best Regards, Yaita / Japan disty
    • Resolved
    • Answered

  • LP8556: PDET_STDBY of CFG1 (A1h) register

    Resolved
    Part Number: LP8556 Hi Team, I believe PDET_STDBY bit is no effect regardless of "1" or "0" when BRT_MODE=10b (Brightness register only). Is my understanding correct? I would like to confirm just in case. Best Regards, Yaita / Japan disty
    • Resolved
    • Answered

  • LP8556: PWM Control in Adaptive Output Dimming

    Resolved
    Part Number: LP8556 Hi Team, Does PWM duty decrease / increase in a linear manner in the range of following red part? I believe it but would like to confirm just in case. Best Regards, Yaita / Japan disty
    • Resolved
    • Answered

  • LP8556: Reserved bit of CFG7 (A7h) register

    Resolved
    Part Number: LP8556 Hi Team, I found EPROM default value of Reserved bits of CFG7 (A7h) register aren't "0" from datasheet page 36-37. Is it possible to set "0"? Best Regards, Yaita / Japan disty
    • Resolved
    • Answered

  • LP8556 MAX CURRENT SETTING QUESTION

    Resolved
    Other Parts Discussed in Thread: LP8556 Dear all: I have some confuse on the current setting of LP8556 with I2C function, Let me double confirm below questions: The <25mA/ch is optimized in TI factory, if customer want to change the Maximal current…
    • Resolved

  • LP8556 Channel Count

    TI Thinks Resolved
    Other Parts Discussed in Thread: LP8556 Hi Team, Can you please confirm that the LP8556 channel count can be can be increased to 6 via the LED_EN register regardless of which flavor is used? Thanks! Nabeel
    • Answered

  • LP8556 / adaptive control

    Resolved
    Other Parts Discussed in Thread: LP8556 Hi Team, I would like to ask two questions about LP8556. 1) The datasheet page.14 shows "Only LED strings that are enabled are monitored and PS_MODE field determines which LED strings are enabled ." as the following…
    • Resolved
    • Answered

  • LP8556 / SW pin waveform under no load condition

    Resolved
    Other Parts Discussed in Thread: LP8556 Hi Team, My customer saw the following SW pin waveform under no load condition for LP8556. Is there any concern on this SW pin waveform? I believe it is normal case for LP8556 under no load condition but would like…
    • Resolved

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