LD2981ABU50TR

LD2981ABU50TR is an ultra low-drop voltage regulator with inhibit. It is a 100mA fixed-output voltage regulator. The low-drop voltage and the ultra-low quiescent current make it suitable for low-noise, low-power applications, and in battery-powered systems. The quiescent current in sleep mode is less than 1μA when the INHIBIT pin is pulled low. This means that when the device is used as a local regulator, it is possible to put a part of the board on standby, decreasing the total power consumption. It is designed to work with a low ESR ceramic capacitor. Typical applications are in cellular phones, palmtop/laptop computers, personal digital assistants (PDA), personal stereos, camcorders, and cameras.

• Logic-controlled electronic shutdown
• Internal current and thermal limit
• Fast dynamic response to line and load changes
• Operating input voltage range from 2.5 to 16V
• Quiescent current is 100µA typ (IO = 1mA, on mode), 0.8µA (VINH <lt/> 0.3V, off mode)
• Dropout voltage is 70mV typ (IO = 25mA)
• Supply voltage rejection is 63dB typ (CO = 10µF, f = 1KHz)
• Output noise voltage is 160µVRMS typ (BW = 300Hz to 50KHz, CO = 10µF)
• SOT-89 package
• Temperature range from -40 to 125°C