The 257-LFBGA package contains it. It's packaged in the shape of a Tube. To ensure reliable operation, the temperature should be regulated to 0°C~70°C. It should be able to operate on a 3V~3.6VV power supply.
PCI1515GHK Features
PCI1515GHK Applications
There are a lot of Rochester Electronics, LLC PCI1515GHK Controllers Interface ICs applications.