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Part Number: TPS61196
I would like to increase the output current of the LED string.
Is it possible to do this with below connection ? Do you have any issues with it ?
Yes, that ok. and for each channel of TPS61196, it can continuously output 200mA, so I would suggets to combine 3 channels together to driver 500mA.
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In reply to Sean Zhou:
Thank you for your advice.
Just to confirm, in my application we are sourcing current (from the diagram above).
Based from below info from datasheet, it can supply a minimum of 400mA
So in order to achieve, 500mA, we only need to combine two channels right?
In reply to Ryan Delfino:
No, thst for pulse current with 400mA, we only recommend for maximum 200mA for each channel so for 500mA, we recommend minimum 3 channels.
I plan to drive 5 LED strings with each string containing 28 LEDs.
The current for each string are as below:
Given this requirements, please help confirm that using part TPS61196 is not suitable in our design.
If yes, can you help advice another part that meets this requirement ?
I'm sorry that TPS61196 can't set the different full-scall current for each channel, and it is better not to set over 200mA for each channel, I would suggest with the solution with several TPS61196.
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