STMicroelectronics LD3985G30R

Description
The LD3985xx is a low-dropout, low-noise voltage regulator that provides up to 150 mA of current from an input voltage range of 2.5 V to 6 V. It is designed to work with low ESR ceramic capacitors and features an ultra-low dropout voltage (60 mV typ. at 150 mA load, 0.4 mV typ. at 1 mA load), very low quiescent current (85 μA typ. at no load, 170 μA typ. at 150 mA load), and a fast turn-on time (typ. 200 μs). The LD3985xx also includes logic-controlled electronic shutdown, internal current and thermal limit, and output low noise voltage (30 μVRMS over 10 Hz to 100 kHz).

Features
Input voltage range: 2.5 V to 6 V
Stable with low ESR ceramic capacitors
Ultra-low dropout voltage (60 mV typ. at 150 mA load, 0.4 mV typ. at 1 mA load)
Very low quiescent current (85 μA typ. at no load, 170 μA typ. at 150 mA load)
Guaranteed output current up to 150 mA
Wide range of output voltage: 1.22 V; 1.8 V; 2.5 V: 2.6 V; 2.7 V; 2.8 V; 2.9 V: 3 V; 3.3 V; 4.7 V
Fast turn-on time: typ. 200 μs [Co= 1 uF, CBYP= 10 nF and lo= 1 mA]
Logic-controlled electronic shutdown
Internal current and thermal limit
Output low noise voltage 30 μVRMS over 10 Hz to 100 kHz
SVR of 60 dB at 1 kHz, 50 dB at 10 kHz
Temperature range: -40 °C to 125 °C

Applications
Mobile phones and similar battery-powered wireless systems
Low-power applications
Battery-powered systems