The output voltage and current range of 88 12D and FAN7300 are the same as that of 62539 original chip, and they can be replaced.

1, 88 12D: This is a switching power supply chip produced by Shanghai Lingdong Microelectronics Co., Ltd., which can replace 62539. It is a single-ended flyback chip with built-in power transistor, which has the advantages of high efficiency, low standby power consumption and low cost.

2.FAN7300: This is a switching power supply chip produced by Fujitsu in Japan, which can also replace 62539.