General Des cription
The EMP896X low-dropout (LDO) CMOS linear regulators, consisting of EMP8965, EMP8966, and EMP8968, feature ultra-high power supply rejection ratio (75dB at 1kHz), low output voltage noise (30μV), low dropout voltage (270mV), low quiescent current (110μA), and fast transient response. It guarantees delivery of 600mA output current, and supports preset (1.2V~3.3V with 0.1V increment, except for 1.85V and 2.85V) as well as adjustable (1.2V to 5.0V) output voltage versions.
The EMP896X 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 EMP896X holds well for low input voltages typically encountered in battery- operated systems. The regulator is stable with small ceramic capacitive loads (2.2μF typical).
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