Description

-500 mA, Ultralow Noise, High PSRR, Low Dropout Linear Regulator Features: Input voltage range: −2.0 V to −5.5 V  Maximum output current: −500 mA Fixed output voltage options: −0.5 V to −4.5 V Adjustable output from −0.5 V to −VIN + 0.5 V Low output noise: 4 μV rms from 100 Hz to 100 kHz  Noise spectral density: 20 nV/√Hz, 10 kHz to 1 MHz  PSRR at −500 mA load  68 dB at 10 kHz  50 dB at 100 kHz  40 dB at 1 MHz  Low dropout voltage: −190 mV typical at −500 mA load  Initial output voltage (VOUT) accuracy: ±0.5%  Output voltage accuracy over line, load, and temperature: ±2.2% Operating supply current (IGND): −0.6 mA typical at no load  Low shutdown current: −2 μA typical at VIN = −5.5 V Stable with small 4.7 μF ceramic input and output capacitor Positive or negative enable logic Current-limit and thermal overload protection 8-lead, 2 mm × 2 mm LFCSP package Supported by ADIsimPOWER voltage regulator design tool