The Texas Instruments LM340MPX-5.0/NOPB is a Linear Voltage Regulator 3-terminal Positive Regulator. This device is used to regulate, or maintain, the output voltage at a safe and consistent level within a range of battery-powered electronic devices including laptop computers, phones and other mobile devices. It is rated to output 5.0V with an input voltage range of 4.5 to 6.0V. It has a maximum output current of 2.0A and is protected against thermal overload and short-circuit conditions, making it suitable for a variety of applications. This device is packaged in a TO-220-3 package and is lead (Pb) free, making it RoHS compliant.