Description
The LD2981 is a 100 mA fixed-output voltage regulator. The low-drop voltage and the ultra low quiescent current make them suitable for low noise, low power applications and in battery powered systems.

FEATUREs
• Ultra low dropout voltage (0.17 V typ. at 100 mA load, 7 mV typ. at 1 mA load)
• Very low quiescent current (80 μA typ. at no load in on mode; max 1 μA in off mode)
• Guaranteed output current up to 100 mA
• Logic-controlled electronic shutdown
• Output voltage of 2.5; 3.0; 3.3; 5.0 V
• Internal current and thermal limit
• ± 0.75% tolerance output voltage available (A version)
• Output low noise voltage 160 μVRMS
• Temperature range: -40 to 125 °C
• Small package SOT23-5L and SOT-89
• Fast dynamic response to line and load changes