• State TI Thinks Resolved
  • Locked Locked
  • Replies 1 reply
  • Answers 1 answer
  • Subscribers 63 subscribers
  • Views 302 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

TPS61169: Rise Time for LED Exposure Application

Jason Metzner
Prodigy 70 points
Part Number: TPS61169

Hello,

The LED driver TPS61169 doesn't seem to list a rise time on its datasheet. I am using the LED in a camera exposure application where I need it on for short bursts (60ms) and every microsecond of rise time counts because the more light that gets in during the exposure, the better the image quality.

What is the LED output rise time for this driver assuming a standard configuration where t0 is at the first PWM edge and t1 is when the LED output is fully high?

Thanks,
Jason

  • 0
    TI__Mastermind 22745 points
    Hi Jason,
    It's an application question, the rise time may be different with different application(different output cap, different LED counts and different output current). For Vin=3.6V,Iout=20mA,L=4.7uH,Cout=1uF,10LED application, the typical rise time is less than 5ms.
    Regards
    Sean