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  • LP55231: basic turn on commands for LP55231

    Resolved
    Part Number: LP55231 Tool/software: I have a board with a LP55231 on it. I'm using Yocto and it is in a locked state, recompiles take 4+hrs. I cannot compile C however I can do bash scripting. I have proven that I can read and writ to the device. how…
    • Resolved

  • LP55231: LP55231 - Not accepting PWM register writes

    Part Number: LP55231 Tool/software: We currently have a device thats using the LP55231SQX LED driver with charge pump and when we initialize the chip and begin writing data to the pwm registers the register value is unchanged and the LEDs arent being…
    • Answered

  • LP55231: LP55231SQX/NOPB clarification?

    Resolved
    Part Number: LP55231 Tool/software: What are the differences between these two parts? LP55231SQ X /NOPB LP55231SQ E /NOPB From what I can tell from the datasheet, the only difference is the T&R size/qty, is that accurate? Thank you …
    • Resolved

  • LP55231: Seemingly uncontrolled LED behavior using engines

    Part Number: LP55231 Tool/software: I have three sequences programmed into memory. I use one engine to run each of the sequences (never simultaneously). Pulsating white program using D1, D2 and D7 Solid white program (again, D1, D2 and D7) Blinking…
    • Answered

  • LP5813: Can i keep the fw code from LP55231

    Resolved
    Part Number: LP5813 Other Parts Discussed in Thread: LP55231 , LP5523 Tool/software: Hi Team, My customer is trying to redesign LP55231 with TI newer parts. I have proposed LP5813 as the best alternative as it is smaller and has lower IQ. However…
    • Resolved
    • Answered

  • LP55231: Engine only takes effect after power cycle

    Resolved
    Part Number: LP55231 Other Parts Discussed in Thread: LP5812 Tool/software: I'm using LP55231 to drive LED sequences. What I've noticed is that the program I'm writing to the LP55231 only takes effect after a power cycle. I don't think this is common…
    • Resolved

  • LP55231: Not able to read and write the program memory of SRAM of LP55231

    TI Thinks Resolved
    Part Number: LP55231 Other Parts Discussed in Thread: LP5813 Tool/software: I have using the Raspberrypi 3 B+ with LP55231 via i2c, i able to write the register to glow the LED connected to D7 and D9 using python and attaching the python code. So, the…

  • LP55231: LP55231

    Part Number: LP55231 I want to use LP55231 to drive 12VDC RGB LED Strip with common anode. I need circuit design using LP55231 to drive 12VDC RGB LED strip using MOSFET Can you send reference design for this?

  • LP55231: Register values on reset

    TI Thinks Resolved
    Part Number: LP55231 Tool/software: Hi, We are planning to use this Led driver in our device. One of the main concerns in led state on power ON system. We are using a Linux based processor to talk to the driver. The boot up time for that would be…
    • Answered

  • LP55231: Questions about LP55231

    Resolved
    Part Number: LP55231 Hello, I would like to ask you a question about the LP55231. (Question 1) If the charge pump circuit is always used in bypass (1×) mode, Are external capacitors C1 and C2 unnecessary? (Question 2) Regarding PWM control, the data…
    • Resolved

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