why PMIC is fabricated in old CMOS technology?

[lawfulgm]

I'm just curious why most of current PMIC (power management IC) are fabricated in old CMOS technology.

For example, Qualcomm is still using 0.18 um CMOS for their new PMIC. what is the advantage of using old CMOS technology besides the cost?

 

[mtwieg]

I don't see what would be advantage of not using older processes. A typical power controller needs to withstand a great deal of bias voltage, but is not terrible complex, and doesn't need to be extremely high speed. So there's not much way for controllers to take advantage of better processes.