Consider replacing the LM5117 chip with the LM5118 chip. The LM5118 is a high performance, high efficiency synchronous buck DC-DC converter controller that achieves up to 95% conversion efficiency. It has a variety of protection functions, including over voltage protection, under voltage protection, over current protection and over temperature protection. In addition, the LM5118 also has an adjustable soft start function and frequency jitter function to effectively reduce EMI noise. Because the pin arrangement and function of the LM5118 and LM5117 are similar, they can be easily used interchangeably.
Hello, the LM5117 is a wide input range synchronous step-down controller with analog current monitor. Generally can not be replaced, its same model is lm5117-Q1