STMicroelectronics LD2982AM18R

Description
The LD2982 is a 50 mA fixed output voltage regulator. Its ultra-low drop voltage and low quiescent current make it suitable for low-noise, low-power applications and battery-powered systems. In sleep mode, the quiescent current is less than 1 μA when the INHIBIT pin is pulled low. Shutdown logic control is available on pin 3 (TTL compatible). This allows part of the board to be put into standby when the device is used as a local regulator, reducing total power consumption. An external capacitor (CByp = 10 nF) connected between the bypass pin and GND reduces noise to 30 μVrms.

Features
Very low dropout voltage (120 mV at 50 mA and 7 mV at 1 mA load)
Very low quiescent current (375 mA typ. at 50 mA load and 75 mA at 1 mA)
Output current up to 50 mA
Logic controlled electronic shutdown
Output voltage of 1.8 V
Internal current and thermal limit
Available in ±1% tolerance (at 25 °C, A version)
Supply voltage rejection: 45 dB (typ)
Only 1 µF for stability
Low output noise voltage (30 μVrms)
Smallest package (SOT23-5L)
Temperature range: -40 °C to 125 °C

Applications
Cellular phones
Palmtop/laptop computers
Personal digital assistants (PDAs)
Personal computers
Camcorders
Cameras