Recently a new family of Monolithic synchronous buck regulator have been developed by Intersil.  It has a step down of 5 volt and. Of load input of 3.3 volt as low as 0.6 volt GPU,  FPGAs,  and Socs. The ISL78233, ISL78234 and ISL78235 Has been designed so as to provide 3A, 4A, 5A  of continuous output current infotainment head units and advanced driver assistant systems that has incompatibility to allow make a simple change in the oem and deliver PCB  address different load requirement as per the car models