Micrel LM2576BU TR Current - Output: 3A Frequency - Switching: 42kHz ~ 63kHz Internal Switch(s): Yes Mounting Type: Surface Mount Number Of Outputs: 1 Operating Temperature: -40?°C ~ 85?°C Package / Case: D??Pak, TO-263 (5 leads + tab) Power - Output: - Series: - Synchronous Rectifier: No Type: Step-Down (Buck) Voltage - Input: 4 ~ 40 V Voltage - Output: 1.23 ~ 37 V Other Names: LM2576BUTR