1. General DC/DC chip filter circuit of external front electrolytic capacitor height is higher, I want to do a product requires the overall circuit board is thin, so want to recommend a front-end don't need electrolytic capacitor or as small as possible (similar to patch) chips , switch rate, the sooner the better, the car level gauge chip; input：8 v to 24 v , output: 5 v, current: 3 a.
2. I want to do the mobile phone in the car through the USB to charge, need to be similar to the adapter for charging the mobile phone is full of automatically power off function (Current detection); input：8 v to 24 v , output: 5 v, current: 3 a.
