The TPS737 is a low-dropout (LDO) regulator that uses an n-type field effect (NMOS) pass transistor to achieve ultra-low dropout performance, reverse current blockage, and freedom from output capacitor constraints. These features combined with an enable input make the TPS737 designed for portable applications. This regulator offers a wide selection of fixed-output voltage versions and an adjustable-output version. All versions have thermal and overcurrent protection, including foldback current limit.