There is a TO-263 case with the integrated voltage regulator. There are 5 terminations on the battery regulator IC chip and each of them has its own function. There are 6 pins on the chip. It is worth mentioning that the regulator type for this regulator IC is FIXED POSITIVE SINGLE OUTPUT LDO REGULATOR.
IFX25401TBV50XT Features
IFX25401TBV50XT Applications
There are a lot of Infineon Technologies IFX25401TBV50XT Linear Voltage Regulators applications.