BUY PS9617 https://www.utsource.net/itm/p/1713128.html
HIGH NOISE REDUCTION, HIGH SPEED DIGITAL OUTPUT TYPE 8-PIN DIP PHOTOCOUPLER
The PS9617 is an 8-pin DIP (Dual Inline Package) voltage regulator manufactured by NEC. It is a three-terminal positive voltage regulator with a fixed output voltage of 5V and a maximum output current of 1.5A. The PS9617 features a thermal shut-down circuit and over-current protection circuit, which protect the device from damage due to excessive power dissipation or overload. It also has a low dropout voltage of 1.2V and a low quiescent current of 10mA. The PS9617 is suitable for use in a wide range of applications, including portable devices, consumer electronics, automotive electronics, and industrial equipment. It can be used to provide a stable 5V power supply for microcontrollers, memory chips, and other digital circuits. (For reference only)