Download the AP3844C datasheet PDF.
This datasheet also includes the AP3842C_ShanghaiSIM variant, as both parts are published together in a single manufacturer document.
Note: The manufacturer provides a single datasheet file (AP3842C_ShanghaiSIM-BCDSemiconductor.pdf) that lists specifications for multiple related part numbers.
Data Sheet AP384XC
The AP3842C/3C/4C/5C are high performance fixed frequency current-mode PWM controller series. These integrated circuits are optimized for off-line and DC-DC converter.