The DMP1022UFDF and DMP2021UFDF P-Channel MOSFETs from Diodes Incorporated are recently designed for load switching in high-efficiency battery management of the portable consumer electronics. these Ics will be established in the devices such as tablets, smartphones, ultrabooks, and for applications in the Internet of Things. They are basically having 12V and 20V ratings respectively.
Taking a look on teh circutary they have been desigbned to look smart and simple and also inexpensive to disable the low voltage power rails and thus benefiting the low on-state resistance ( RDS(ON)) of these MOSFETs under low gate drive conditions.