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Original question:

[FAQ] List of FAQs for TPS923655 / TPS923654 / TPS923653 / TPS923652 LED driver

[FAQ] How to design the CSP and CSN pin components for TPS923655 / TPS923654 / TPS923653 / TPS923652?

Steven Li
Mastermind 19845 points
Other Parts Discussed in Thread: TPS923652, TPS923653, TPS923654, TPS923655

How to design the CSP and CSN pin components for TPS923655 / TPS923654 / TPS923653 / TPS923652?

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    TI__Mastermind 19845 points

    Please follow the below two graphical illustrations (one for Boost connection and another one for Buck-Boost connection) to design the CSP and CSN components. There are two points you should pay attention to - 

    • The 100Ω resistor on the CSN line: It is necessary. The package of it should be no smaller than 0603.
    • The 1nF capacitor between the CSP and CSN pins: It is optional and is for noise filtering purpose. Place it close to the CSP and CSN pins on the PCB.