general description
the emp8020 low-dropout (ldo) cmos linear regulators feature ultra-high power supply rejection ratio (78db at
1khz), low output voltage noise (48µv), low dropout voltage (270mv), low quiescent current (50µa), and fast transient response. it guarantees delivery of 300ma output current, and supports preset output voltages ranging from 0.8v to 4.75v with 0.05v increment.
 
the emp8020 is ideal for battery-powered applications by virtue of its low quiescent current consumption and
its 1na shutdown mode of logical operation. the regulator provides fast turn-on and start-up time by using dedicated circuitry to pre-charge an optional external bypass capacitor. this bypass capacitor is used to reduce the output voltage noise without adversely affecting the load transient response. the high power supply rejection ratio of the emp8020 holds well for low input voltages typically encountered in battery- operated systems. the regulator is stable with small ceramic capacitive loads (2.2µf typical).
 
additional features include bandgap voltage reference, constant current limiting and thermal overload protection.  available in miniature 5-pin sc-70-5 package, sot-25 package options are also offered to provide additional flexibility for different applications.