Answered

• LP8556: recommend solution for the spec

  

  Bonnie Chen

  Resolved

  Part Number: LP8556 Other Parts Discussed in Thread: LP8555 Hi Team, do you have recommend solution for below spec? Vin=3.8~4.25V Vout=30v current per channel:30-90mA need 4 or 6 channel to total 50-60 LEDs(10" LCM module) must to have I2C…

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  • over 6 years ago
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Answered

• LP8556: maxium sink current

  

  Qianqian

  Resolved

  Part Number: LP8556 Dear TI Experts I am now using LP8556 ,and about the current,I don't know which one is right:

  • Resolved

  • over 7 years ago
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Answered

• LP8556: LP8556 LED Open and Short Detect

  

  [FAE] Andrew Wang

  Resolved

  Part Number: LP8556 Hi Team, Customer wants to know more detail how do we do LED Open and Short detection, a rough circuit would be perfect. If no graph is available, please let me know which device open/short detect is similar to LP8556, then it…

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  • over 9 years ago
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• LP8556: Function of PDET_STDBY bit

  

  Michael Gaechter

  TI Thinks Resolved

  Part Number: LP8556 Has the PDET_STDBY bit only a function, when BRT_MODE is PWM input only?

  • over 7 years ago
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• RE: LP8556: I2C funtion if EN/VDDIO is driven to 0V

  

  Aleus

  Hi Sean, sorry, you answer not exact to my question. It is obvious to me that if I don`t power a device it can`t interact in any way. My question was what will happen to the other devices on the same I2C-bus. Or in other words did the lp8556 have any…

  • over 6 years ago
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Answered

• LP8556: Inductor selection

  

  taichi

  Resolved

  Part Number: LP8556 Hello, My customer use LP8556 the bellow condition. Vin : 8.1 ~ 13.2 Vout : 30V (8S6P) Iout : 120mA (20mA / ch) Fsw : 1250kHz We see '9.2.2.1 Recommended Inductance for the Boost Power Stage ' in datasheets, they…

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  • over 7 years ago
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• LP8556: Burst transmission

  

  T Kishi

  TI Thinks Resolved

  Part Number: LP8556 Hi My customer has question. Is it no problem to burst transfer to LP 8556? The customer wants to write at a stroke by burst transfer. Also, at this time, "Write Only" or "Unused Register" is also written, but is there a problem…

  • over 7 years ago
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Answered

• LP8556: I2C pin

  

  T Kishi

  Resolved

  Part Number: LP8556 Hi My customer has question. I want to set registers with I2C every time at activate LP8556. After writing, there is no plan to communicate by I2C, SDA and SCL will remain pulled up to 3.3V, but are there any problems? Best Regard…

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  • over 7 years ago
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• LP8556: Does this part have same transmission format with TPS85132?

  

  user021864

  TI Thinks Resolved

  Part Number: LP8556 Hi, My customer is wondering if this part have the same transmission format with TPS85132? Below is the capture from TPS85132 Can you help to let us know your comment or if there are further information needed? …

  • over 6 years ago
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• LP8556: Audible noise and unstable VLDO output

  

  Peter Guan1

  TI Thinks Resolved

  Part Number: LP8556 Hi, We are having audible noise issue from a recently build. Previous builds do not have this issue and the design did not change. Two differences we found when comparing the current (audible noise) and previous (no audible noise…

  • over 7 years ago
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