National Semiconductor LM2598S-3.3/NOPB Current - Output: 1A Frequency - Switching: 150kHz Internal Switch(s): Yes Mounting Type: Surface Mount No. Of Outputs: 1 No. Of Pins: 7 Number Of Outputs: 1 Operating Temperature: -25?°C ~ 125?°C Operating Temperature Range: -25?‚?°C To +125?‚?°C Output Current: 1A Output Voltage: 3.3V Package / Case: D??Pak, TO-263 (7 leads + tab) Power - Output: - Primary Input Voltage: 12V Rohs Compliant: Yes Series: SIMPLE SWITCHER?® Supply Voltage Range: 4.5V To 40V Synchronous Rectifier: No Termination Type: SMD Type: Step-Down (Buck) Voltage - Input: 4.5 ~ 40 V Voltage - Output: 3.3V Other Names: *LM2598S-3.3, *LM2598S-3.3/NOPB, LM2598S-3.3