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LM1117-5V 低温问题求解

Other Parts Discussed in Thread: LM1117

由于需要5V的电压作为基准电压,使用了LM1117,电路都是按照规格书来做的,原边4个25V/10uF的陶瓷电容,输出2个25V/10uF的陶瓷电容。

由于只是做基准,负载电路很小,大约只有5mA.现在出问题了,在常温的时候,5.0V,很准确,但是到了-40度,输出电压只有4.81V,

规格书的变化率很小啊,求解决方法?