LM3410: LED Driver that can pulse a string of LEDs for an industrial vision processing application

Jonathan Geronga

Part Number: LM3410
Other Parts Discussed in Thread: TPS92692, TPS92691

Hi Team,

The product above is for attention use only.
Since I can't locate a useful product for the customer on our website, I would like to get some help if we have something to offer with the customer request below:

The customer is looking for LED driver IC that can pulse a string of LEDs for an industrial vision processing application.

In order to get the intensity of lighting the customer is looking for, He needs an LED driver capable of pulsing LEDs at higher currents while the shutter is open

Requirements:
Around 20-25v at 160mA to drive the LEDs
10ish LEDs with v_f of 2-2.5V
Running around 100 hertz pulses
source voltage for driving the leds will be 5-18v

Let me know if you need more information.

Thanks!

Jonathan

over 5 years ago

0 Irwin Nederbragt over 5 years ago

TI__Mastermind 28655 points

Hello,

As you stated, 'The product above is for attention use only.' Yes, the LM3410 input range will not work.

This is a boost requirement. You can look at the TPS92691 or TPS92692. The input voltage really wants to be 6.5V or higher but will work to lower voltages (designed for cold crank on automotive). So if 5V is the end of battery life this may still be okay.

As for 100 Hz pulses, is the duration and timing critical? What is the pulse waveform?

Best Regards,

0 Jonathan Geronga over 5 years ago in reply to Irwin Nederbragt

TI__Expert 7930 points

Hi Irwin,

Thank you for your support and answer in my inquiry above and also suggesting a TI product.
Regarding your question:
As for 100 Hz pulses, is the duration and timing critical?
>> Customer answer is Yes.

What is the pulse waveform?
>> Square wave

Let me know if the products you suggested above still fits the customer needs base on his answer.

Regards,

Jonathan

0 Irwin Nederbragt over 5 years ago in reply to Jonathan Geronga

TI__Mastermind 28655 points

Hello Jonathan,

I would say yes however I don' t have enough information. If it is PWM dimming at 100 Hz it should be good to use. It depends on the detail of what they are trying to do.

Best Regards,

0 Irwin Nederbragt over 5 years ago in reply to Irwin Nederbragt

TI__Mastermind 28655 points

Hello Jonathan,

I haven’t heard back from you, I’m assuming you were able to resolve your issue.
If not, just post a reply below (or create a new thread if the thread has locked due to time-out)

Best Regards,

0 Jonathan Geronga over 5 years ago in reply to Irwin Nederbragt

TI__Expert 7930 points

Hi Irwin,

I did not receive a response from our customer as of this time.

I will resolve this thread if I still did not receive any feedback until next week.

Regards,

Jonathan

0 Irwin Nederbragt over 5 years ago in reply to Jonathan Geronga

TI__Mastermind 28655 points

Hello Jonathan,

I haven’t heard back from you, I’m assuming you were able to resolve your issue.
If not, just post a reply below (or create a new thread if the thread has locked due to time-out)

Best Regards,

0 Jonathan Geronga over 5 years ago in reply to Irwin Nederbragt

TI__Expert 7930 points

Hi Irwin,

I will now resolve this since I did not anymore receive feedback from the customer.

Thank you for your support.

Regards,

Jonathan

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LM3410: LED Driver that can pulse a string of LEDs for an industrial vision processing application