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  • DIY LiPo Charge/Protect/5V Boost Circuit

    That's because the feedback resistors are wrong on his schematic, happened the same to me, so i decided to look up on the datasheet and make the Vout calculation and found out the problem. How it is, there is not enough feedback so the IC keeps pulsing until it shorts down itself.You have to change R2= 1K and R3=7.5K and you also need to replace the IC, you probably have a short to GND on IN pin.

    R2= 1K and should be R3=7.5K, this schematic is wrong on the feedback.As far as is see, there is no other problem

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