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Showing 28 results View by: Thread Post Sort by
  • LP55281: Quiescent Current Calculation

    Michael Balourdas
    Michael Balourdas
    TI Thinks Resolved
    Part Number: LP55281 Other Parts Discussed in Thread: LP5012 , LP5024 Hello, Just want to make sure I'm calculating the Iq for this part correctly. If I have all EN_RGB HIGH, and ALED and Audio Sync disabled, would my Iq be 0.6mA + 250uA = 850uA?…
    • over 2 years ago
    • Power management
    • Power management forum
  • LP55281: Need Layout example

    Nicholas Carley
    Nicholas Carley
    TI Thinks Resolved
    Part Number: LP55281 Hello, The layout of this device is tricky, specifically the Rx, Gx, and Bx pins. Do we have a layout example for this device? The datasheet doesn't cover all pins and the EVM doesn't include layout or design files. Best, N…
    • over 4 years ago
    • Power management
    • Power management forum
  • LP55281: FB pin connection with external supply

    Michael Balourdas
    Michael Balourdas
    TI Thinks Resolved
    Part Number: LP55281 Hello, My customer wants to use LP55281 with an external supply. Can FB be left floating? Is Cout still needed? From the datasheet: "Feedback break protection — prevents uncontrolled operation if FB pin gets disconnected.…
    • over 4 years ago
    • Power management
    • Power management forum
  • LP55281: LP55281 EVK issu

    Wesley Lai
    Wesley Lai
    Part Number: LP55281 Dear Sir, When we use the LP55281 driving LED, we have some problem. Our hardware: MCU is Nordic nRF52832 LED driver IC is LP55281 Now, we use 6 pcs LP55281 EVM to light on our LED matrix, we find if connect 2 pcs LP55281…
    • over 7 years ago
    • Power management
    • Power management forum
  • Answered
  • LP55281: LP55281 EVK issu

    Wesley Lai
    Wesley Lai
    Resolved
    Part Number: LP55281 Dear Sir, I have two sets of EVKs for the LP55281. I am currently using the PC for EVK testing and found some problems: 1. When the EVK is connected to the USB of the PC, press the Start Test button on the LED test page, we…
    • Resolved
    • over 7 years ago
    • Power management
    • Power management forum
  • Answered
  • LP55281: ASEx and ALED pin

    Julian Chen
    Julian Chen
    Resolved
    Part Number: LP55281 Hi E2E, if we don't use ASE1, ASE2 and ALED pin of LP55281, should we floating or connect to gnd? Thanks!
    • Resolved
    • over 7 years ago
    • Power management
    • Power management forum
  • Answered
  • LP55281: Sequence requirement

    tateo yamashiro
    tateo yamashiro
    Resolved
    Part Number: LP55281 Hi, We got a question from the customer about LP55281. Could you help us? [Question] They are considering the configuration which VDDx and LED power separately. In this usage, is there shutdown and start-up sequence requirement…
    • Resolved
    • over 7 years ago
    • Power management
    • Power management forum
  • LP55281: Calculation of RGB current setting resistor and Oscillator frequency resistor?

    Selvaraj K
    Selvaraj K
    TI Thinks Resolved
    Part Number: LP55281 Kindly share the calculations for RGB current setting resistor and Oscillator frequency resistor for LP55281.
    • over 6 years ago
    • Power management
    • Power management forum
  • LP55281: Operation with Vout > Vin and Pulse-Skipping

    Chuchen Wang
    Chuchen Wang
    TI Thinks Resolved
    Part Number: LP55281 Hi, My customer has the following questions: We use an L55281 LED Driver to generate a 4.0V output with an input that can range from 3.4V to 4.35V. I had some questions about this. 1. For voltages above 4V I understand that…
    • over 7 years ago
    • Power management
    • Power management forum
  • Answered
  • LP55281: 12channel LED driver spec

    TS Yang
    TS Yang
    Resolved
    Part Number: LP55281 Other Parts Discussed in Thread: LP5523 , LP5569 Hi, I need TI's confirm about the spec of LP55281. I heard that there must be an internal engine to implement animation during the boot-up process. Please check LP55281 have it…
    • Resolved
    • over 8 years ago
    • Power management
    • Power management forum
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