PMIC Backlight LED Booster (FB_WLED)

[Khan]

Hello,

We have an application where we need to utilize the inbuilt backlight LED booster of the PMIC(TPS65217x). After a glance at the datasheet of the PMIC, I can see that the booster is accessible through an external pin(FB_WLED). Given the fact that the OSD335x-SM modules are built on the same PMIC, I was looking for the FB_WLED pin assignment in OSD335x-SM package, is it accessible in this package?

[Erik Welsh]

Khan,

Unfortunately, the backlight LED booster functionality of the PMIC is not available on the OSD335x Family of devices.

We would recommend using an an external Backlight LED driver:

http://www.ti.com/power-management/led-drivers/backlight-led-drivers/products.html

This provide you with more flexibility and better dimming ability since you will be able to control the brightness using a PWM from the OSD335x.

Thanks,

Erik

[Author]

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