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TPS61165被用来当做升压芯片

Other Parts Discussed in Thread: TPS61165

tps61165芯片的典型应用是背光升压电路,我把它当做了一个输出固定电压的升压电路。输入3.3V输出10.4V,常温下挂着负载10.4V可以输出正常,但是低温情况下,刚上电加着负载就输出不正常了,输出只能达到4V左右的样子。把负载去掉后,10.4V输出又正常了,在不断电的情况下,再挂上负载,10.4V输出正常。感觉是启动的时候,负载电流太大造成的,但是这个负载的工作电流只有50mA。不知道这是为何?