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  • LP8556: Need clarification of the output voltage range on this part

    TI Thinks Resolved
    Part Number: LP8556 Hello, I am looking at the LP8556 LED driver. I was looking at the specifications and saw that the output voltage range is 7V-48V. When I looked that this parts datasheet it stats increments of boost output voltage. This table is on…

  • LP8556TM-EVM: Will the I2C registers configuration be reserved when LP8556 enters into shutdown mode?

    TI Thinks Resolved
    Part Number: LP8556TM-EVM Other Parts Discussed in Thread: LP8556 Dear TI, Will the I2C register configuration be reserved when LP8556 enters into shutdown mode? In other words, do I have to re-config LP8556 again when LP8556 quit shutdown mode? Thanks…

  • LP8556: VBOOST problem

    Part Number: LP8556 Hi Team I am using LP8856TMX-E05 for our 13.3" LCM backlight driver. Now,I meet a strange issue about Vboost. When power on our device, the backlight was work well. Then power off the device and power on again, backlight was…
    • Answered

  • LP8556: How to let LP8556 to operate at lower voltage, such as 2.3V or lower?

    Resolved
    Part Number: LP8556 Other Parts Discussed in Thread: TPS61042 Dear Sir, Please advice whether LP8556 functions well at 2.3V voltage or lower to LP8556 boost circuit of LED backlight power -> if a fixed 3.6V from external buck-boost ( always on power…
    • Resolved
    • Answered

  • LP8556: Register Setting for boost voltage from 12V to 24V

    Resolved
    Part Number: LP8556 Hi Teams, Now I'm trying to use LP8556-E02 for boost voltage from 12V to 24V. But I set some register setting, the VBOOST(output) is still 12V. Reg : value [0xA9] : 0xA0 [0x9E] : 0x00 Some information for my using shows…
    • Resolved
    • Answered

  • LP8556: How to control LP8556 without using I2C?

    Resolved
    Part Number: LP8556 LP8556 support team Customer selects the following LP8556TMX-E02/NOPB. As far as I see the below CFG2 in EPROM, it looks like that the brightness and backlight on/off can't control unless I2C is used. Is this understanding correct…
    • Resolved

  • RE: Linux/LP8556: LP8556 power consumption of maximum sink current is Not as expected.

    Hi Sean, Thanks for the suggestion, we will try to set "VBOOST_RANGE=0 and IBOOST_LIM=11(1.8A) ". By the way, at Page 35 of LP8556 document (SNVS871J –JULY 2012–REVISED JANUARY 2018", there is a comment : " In applications with an output voltage…

  • LP8556: LOOP GAIN measuremnt

    TI Thinks Resolved
    Part Number: LP8556 Hi, Customer would like to measure the loop gain of LP8556 based on the diagram shown below. Do they place the 10ohm resistor at the right location? If not, what is the correct way? Thanks! Antony
    • Answered

  • LP8556: Can the pre-configured EPROM settings be changed?

    Resolved
    Part Number: LP8556 Hi team, For the LP8556SQX-E09/NOPB I got a question. Can the pre-configured EPROM settings be changed? For example , the pre-configured value for A5h register is 04h so the PWM_FREQ is 9616Hz , can I change it to 4808Hz? If it…
    • Resolved

  • LP8556: LP8556 jitter tolerance at PWM frequency 100 to 2400 Hz

    TI Thinks Resolved
    Part Number: LP8556 LP8556 jitter tolerance at PWM frequency 100 to 2400 Hz

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