... .3 to 24V DC, 0.4-2AApplications:Fixed frequency control circuit Applies to mobile phone, CD/MP3 player, router, tax ... use;Chip inside integrated over-voltage, over-current, overheat protective circuit. 4. Has the maximum output power limiting function, to ... hours. 6. Through the corresponding temperature testing, aging test, efficacy test and short circuit testing. 7.May be based on customer demand ...