The UCC283-3/-5/-ADJ family of positive linear series pass voltage regulators are tailored for low-drop-out applications where low quiescent power is important. Fabricated with a BiCMOS technology ideally suited for low input-to-output differential applications, the UCC283-5 passes 3 A while requiring only 0.45 V of typical input voltage headroom (ensured 0.6-V dropout).