lm3697 led

Tanvi Desai

Other Parts Discussed in Thread: LM3697

hello,

i want to blink led lm3697.so according to datasheet page no 32 i have to just config register which is mention in table no 26.right??or any other register need to be configure.

http://www.ti.com/lit/ds/symlink/lm3697.pdf

Regards,

Tanvi

over 7 years ago

0 Benjamin Lough over 7 years ago

TI__Mastermind 26225 points

Hi Tanvi,

The instructions listed in table 26 is for 2 separate strings each with 6 LED's. The table provides the correct steps but you will want to modify the values you are writing to 0x10, 0x19 and 0x1A to fit the LED configuration you are using.

Best Regards,
Ben Lough

0 Tanvi Desai over 7 years ago in reply to Benjamin Lough

Prodigy 130 points

Hi Ben,

How i know how much led in one string??it was hardware part right??or any software way to configure LED in one string??

Regards,

Tanvi Desai

0 Benjamin Lough over 7 years ago in reply to Tanvi Desai

TI__Mastermind 26225 points

Tanvi,

Yes, your LED's are physical hardware components. You will need to know the forward voltage (Vf) of the LED's you are using. This will determine the value you write to 0x1A for over voltage protection. Page 22 of the datasheet may be useful to you.

Best Regards,
Ben Lough

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lm3697 led