The SC1458 is a family of dual output, ultra-low dropout linear voltage regulators designed for use in battery powered wireless applications. Both versions of the SC1458 require an input voltage level between 2.5V and 5.5V. The SC1458A supplies 2.5V on OUTA and 1.8V on OUTB, while SC1458B supplies 2.85V on both outputs. (For other voltage options see the SC560). The SC1458A provides a PGOOD output to hold a processor in reset when the voltage on OUTA is not in regulation. The SC1458B provides superior low-noise performance by using an external bypass capacitor to filter the bandgap reference. Both versions have a single enable pin that controls both LDO outputs. The startup sequence delays the start of OUTB by 128s after OUTA is enabled. Each version also provides protection circuitry such as current limiting, under-voltage lockout, and thermal protection to prevent device failures. Stability is maintained by using 1F capacitors on the output pins. The MLPD package and 0402 ceramic capacitors minimize the required PCB area.