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你好，
用LM3553驱动VF6.8V的LED，按datasheet上贴了Rset=14KΩ，理论最大值1.2A，最小1.2/128约为9.3mA。而实测最大电流达到了2A左右，最小也有50-60mA。求问是软件设置问题还是芯片本身的问题？
