• LP8556: LP8556TMX-E02/NOPB Can not output high voltage

  

  steven young

  TI Thinks Resolved

  Part Number: LP8556 Hi TI, Our project used LP8556TMX-E02/NOPB to drive backlight; I didn't use I2C control ,ONLY connect PWM and EN/VDDIO PIN ;FSET and ISET PIN left floating;LP8556TMX-E02/NOPB can not output high voltage;IF not using I2C control…

  • over 5 years ago
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Answered

• LP8556: ball to ball distance

  

  Roy Chou1

  Resolved

  Part Number: LP8556 Hi Team, My customer is using LP8556 for their application. (DSBGA) Could provide the max&min distance value of ball to ball for there reference. Thanks.

  • Resolved

  • over 6 years ago
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Answered

• LP8556: Schematic review

  

  Will Wang47

  Resolved

  Part Number: LP8556 Dear team, Customer has use 2 pcs in their new VR project, they have finished the schematic design, could you help review the schematic? I would like to send the schematic via email. Thanks and Best Regards, Will

  • Resolved

  • over 6 years ago
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Answered

• LP8556: Could it lighten 72 LEDs at the same time?

  

  Cindy Chang

  Resolved

  Part Number: LP8556 Hi team, We've some application questions about LP8556. If we only have Vin=5V, 1. Could the 1pcs LP8556 drive 12 series*6 strings = 72 LEDs to light up simultaneously and continuously? 2. Could all the 6 strings of currents…

  • Resolved

  • over 5 years ago
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Answered

• LP8556: LP8556 RFSET tolerance

  

  Shaquille Chen

  Resolved

  Part Number: LP8556 Hi Team, My customer are working on design of LP8556. They don't have 18.7k ohm resistor. Can they use 18.2k ohm? What's the acceptable tolerance resistor of this pin. Shaq

  • Resolved

  • over 9 years ago
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Answered

• LP8556: Dimming resolution

  

  Pjs

  Resolved

  Part Number: LP8556 HI, I'm looking to use the LP8556 to dim some discrete LEDs at low brightness and so am particularly keen to understand the dimming resolution available. 1) There's mention in the first page of the datasheet that says "LED current…

  • Resolved

  • over 7 years ago
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• LP8556: using LED controller with a single LED string.

  

  sergio ruiz

  TI Thinks Resolved

  Part Number: LP8556 Hello, I would like to control a TFT backlight like the following one: I only have two pin available for the backlight. the led string is 3x6 LEDs, but the 3 strings and connected in pararell. So, I would like to use only one…

  • over 6 years ago
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Answered

• LP8556: How to change internal register values? can i use arduino ?

  

  ameenu vm

  Resolved

  Part Number: LP8556 we are using LP8556SQ-E09/NOPB. Need to program it as per following points... 1. pure current control mode of dimming 2. to disable last two channels 3. adaptive voltage control mode 4. To set BOOST voltage in a lowest range 5. To…

  • Resolved

  • over 5 years ago
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• LP8556: LP8556 PWM Dimming Frequency Range

  

  Kevin Wen

  TI Thinks Resolved

  Part Number: LP8556 Hi team, My customer BOE is evaluating LP8556 on their high resolution panel for VR applicaiton, they want to set the LED driver PWM dimming frequency to as low as 60Hz (FSET pin shorted to GND, PWM dimming frequency is the same…

  • over 9 years ago
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• LP8556: use at low frequency operation

  

  user021864

  TI Thinks Resolved

  Part Number: LP8556 Other Parts Discussed in Thread: LP8555 , TPS61199 Hi, My customer is having below questions: PWM pin is used for dimming mode control, so frequency is from 100Hz to 22K. In our application, we use direct PWM as LED one/off…

  • over 6 years ago
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