This document is the application note of PBLS20xD and PBLS60xD low VCEsat load switches issued by NXP. This switch adopts PNP low VCEsat transistor and NPN RET in a single package, which can simplify circuit design and reduce pick-and-place cost. It uses SOT457 package, has the highest current-per-footprint rating on the market, and is ideal for switching positive supply rails or ground-referenced loads. Main applications include supply-line switches, battery-charger switches, high-side switches for LEDs, drivers, and backlights, and portable equipment.