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Showing 30 results View by: Thread Post Sort by
    Answered
  • LP8555: 8 serial RGB LED => driver search

    NOCENTE Anthony
    NOCENTE Anthony
    Resolved
    Part Number: LP8555 Other Parts Discussed in Thread: LP5520 , LM3697 , LM3532 Dear TI technical support, I contact you because I'm looking for a specific LED driver. And after several hours of research, It seems that it is not so easy to find what…
    • Resolved
    • over 1 year ago
    • Power management
    • Power management forum
  • LP8555: Unused Bank B

    Timothy Cheehan
    Timothy Cheehan
    TI Thinks Resolved
    Part Number: LP8555 What would the SW_B and FB_B pins be tied to if B bank was unused? Planning to not populate the inductor, diode and capacitors for powering Bank B.
    • over 3 years ago
    • Power management
    • Power management forum
  • LP8555: Output A+B

    Jeff YANG
    Jeff YANG
    TI Thinks Resolved
    Part Number: LP8555 Other Parts Discussed in Thread: TPS92360 , TPS61165 Hi, LP8555 can connect two output A and output B together, provide total 12*40mA=480mA? I have below 2+6 LED, but each channel need 60mA. But seems channel 1+ 3 + 5 total need 6*60mA…
    • over 3 years ago
    • Power management
    • Power management forum
  • LP8555: Function as same PCA9685

    Kevin Huang8
    Kevin Huang8
    TI Thinks Resolved
    Part Number: LP8555 Other Parts Discussed in Thread: LP5018 Hi Team, TI have same NXP PCA9685 16 Chanel LED driver and I2C control? PCA9685 16-channel, 12-bit PWM Fm+ I2C-bus LED controller (nxp.com)
    • over 3 years ago
    • Power management
    • Power management forum
  • Answered
  • LP8555: can the BOOST of LP8555 BOOST operate in DCM mode ?

    Kouassi KRA
    Kouassi KRA
    Resolved
    Part Number: LP8555 The LP8555 datasheet recommends an inductance between 4,7uH and 6,3uH with 3,1A for most application. However in my application with L=4,7uH, i found a ratio between inductance peak to peak ripple current and mean inductance current…
    • Resolved
    • over 5 years ago
    • Power management
    • Power management forum
  • LP8555: Soft-start function

    Kouassi KRA
    Kouassi KRA
    TI Thinks Resolved
    Part Number: LP8555 Hi, The datasheet that there is a soft-start function in LP8555 section 8.3.1.1. What are the specifications about this soft-start function? With an inductance 10uH I measure a peak inductance current during start-up at 1.5A and…
    • over 4 years ago
    • Power management
    • Power management forum
  • LP8555: How to connect LP8555 to drive 120mA per chain LED?

    Jason Dai
    Jason Dai
    TI Thinks Resolved
    Part Number: LP8555 Dear E2E, How to connect LP8555 to drive 120mA per chain LED? there are 4 chain in customer's application. BR, Jason
    • over 5 years ago
    • Power management
    • Power management forum
  • LP8555: Conversion ratio VOUT/VIN problem

    Kouassi KRA
    Kouassi KRA
    TI Thinks Resolved
    Part Number: LP8555 Hello, According to LP8555 datasheet page 6, VOUT/VIN (MIN) = 1,3. In my application at minimum current ILED=5 mA, i have : VIN (MAX)=5,5V and VOUT(MIN)=Vf(LED) * Number of LED = 1,764*4 = 7,056V => VOUT/VIN =1,28 <1,3 . I plan…
    • over 5 years ago
    • Power management
    • Power management forum
  • LP8555: I2C Bus Sharing With LP8557

    Eric201902
    Eric201902
    TI Thinks Resolved
    Part Number: LP8555 Other Parts Discussed in Thread: LP8557 , The Configuration of the Device we are designing contain 4 separate LED Drivers (LP8555*3, LP8557*1 all from TI). We need to Control all 4 LED Drivers from the same Control Chip through I2C interface…
    • over 5 years ago
    • Power management
    • Power management forum
  • Answered
  • LP8555: LED per channel

    jung tae park
    jung tae park
    Resolved
    Part Number: LP8555 Other Parts Discussed in Thread: LP8556 Hi I am trying to design the LP8556. I'm going to use the red LED (VF = 2V) The current is about 10 mA to 20 mA per channel. I want to control a total of 78ea LEDs with 13ea red LEDs per channel…
    • Resolved
    • over 6 years ago
    • Power management
    • Power management forum
>

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