R 18948314942 QQ: 1094642907 fitipower integrated .
FP6717 - 550KHz High Efficiency Low Ripple Synchronous Step-Up Converter
R 18948314942 QQ: 1094642907 fitipower integrated technology lnc. FP6717 5V, 3.1A, 550KHz High Efficiency Low Ripple Synchronous Step-Up Converter .