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TPS61169: Dimming Below 1% PWM via FB Pin

Part Number: TPS61169
Other Parts Discussed in Thread: TPS61165

Hi Team,

My customer needs a backlight driver that can support less than 1% PWM dimming for a 19.8V string. They would like to use the TPS61169 if possible. I am thinking the best approach would be adding further dimming via the FB pin similar to Figure 16 of TPS61165. Do you see any issues using this with the 61169? It is not shown on its datasheet, but seems like a fairly generic approach that should work on most devices.

Thanks,

Antonio