The LM2940IMP-5.0/NOPB with LDO Voltage Regulators 1A LDO REG is a low-dropout (LDO) voltage regulator manufactured by Texas Instruments. This device is ideal for battery-powered systems, such as a portable medical device, because it provides a stable power supply without additional input capacitors or inductors. The LM2940IMP-5.0/NOPB is an adjustable device capable of providing up to 1A of current, with an input voltage ranging from 3.1V to 18V. Its output is adjustable between 1.225V and 10V. The device has an output current of 1A, a low-drop out voltage of 170mV typical at 125mA, an output voltage tolerance of +/-2%, and an output noise of 20 µVrms maximum. It also features both over-current protection and thermal protection, along with short-circuit and reverse polarity protection. The device also has low EMI radiation, and is offered in an 8-pin SOIC surface mount package.