It is frequently found in a TSSOP20 package format, allowing for high-density integration on the charger's printed circuit board (PCB). Role in Power Tool Ecosystems
The marking is most commonly associated with Analog Devices (formerly Maxim Integrated) and ON Semiconductor , though several second-source manufacturers produce compatible parts. The "AFM" prefix sometimes points to a custom marking code for high-volume automated assembly lines. afm8316