National Semiconductor LM2831XSD/NOPB Current - Output: 1.5A Frequency - Switching: 1.6MHz Internal Switch(s): Yes Mounting Type: Surface Mount Number Of Outputs: 1 Operating Temperature: -40?°C ~ 125?°C Package / Case: 6-LLP Power - Output: - Series: - Synchronous Rectifier: No Type: Step-Down (Buck) Voltage - Input: 3 ~ 5.5 V Voltage - Output: 0.6 ~ 4.5 V Other Names: LM2831XSD, LM2831XSDTR