Description

The SC1454 contains two ultra low dropout voltage regulators (ULDOs). It operates from an input voltage range of 2.25V to 6.5V, and a wide variety of output voltage options are available. One ULDO has a fixed output, and the other is either fixed (SETA pin grounded) or adjustable using external resistors. Each ULDO has an independent enable pin.

Features

◆ Up to 150mA per regulator output

◆ Low quiescent current

◆ Low dropout voltage

◆ Stable operation with ceramic caps

◆ Very low 50µVRMS output noise

◆ Wide selection of output voltages

◆ Tight load and line regulation

◆ Current and thermal limiting

◆ Reverse input polarity protection

◆ <1.5uA off-mode current

◆ Logic controlled enable

Applications

◆ Cellular telephones

◆ Palmtop/Laptop computers

◆ Battery-powered equipment

◆ Bar code scanners

◆ SMPS post regulator/dc to dc modules

◆ High efficiency linear power supplies