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TPS92691 模拟调光方式IADJ脚, 140mv以下区间段可以使用吗,如果IADJ脚使用0-2.25调光有什么风险和问题?

Other Parts Discussed in Thread: TPS92691

应用TPS92691 芯片boost方案做了一款12w左右led电源,PWM调光分辨率高,但有频闪问题,现使用模拟调光方式调光,但分辨率不够,芯片spec上IADJ脚 0.14-2.25v 可调,比率大概是15:1, 实际调试发现IADJ脚 0-0.14v也可用,如果使用IADJ脚 0-0.14v段调光,有什么问题和风险吗?