National Semiconductor LM2588T-3.3/NOPB Current - Output: 5A Frequency - Switching: 100kHz ~ 200kHz Internal Switch(s): Yes Mounting Type: Through Hole Number Of Outputs: 1 Operating Temperature: -40?°C ~ 125?°C Package / Case: TO-220-7 (Bent and Staggered Leads) Power - Output: - Series: SIMPLE SWITCHER?® Synchronous Rectifier: No Type: Step-Up (Boost), Flyback, Forward Converter Voltage - Input: 4 ~ 40 V Voltage - Output: 3.3V Other Names: *LM2588T-3.3, *LM2588T-3.3/NOPB, LM2588T-3.3