SI-8090S

1-1-3 DC/DC Converter ICs SI-8000S Series Full-Mold, Separate Excitation Step-down Switching Mode ■Features Compact full-mold package (equivalent to TO220) Output current: 3.0A High efficiency: 79 to 91% Requires only 4 discrete components Internally-adjusted phase correction and output voltage Built-in reference oscillator (60kHz) Built-in overcurrent and thermal protection circuits Built-in soft start circuit (Output ON/OFF available) ■Lineup Part Number VO(V) IO(A) SI-8033S 3.3 SI-8050S 5.0 SI-8090S 9.0 3.0 SI-8120S 12.0 ■Absolute Maximum Ratings Parameter DC Input Voltage Power Dissipation Junction Temperature Storage Temperature SW Terminal Applied Reverse Voltage Thermal Resistance(junction to case) Symbol VIN PD1 PD2 Tj Tstg VSW θ j-c *35V for SI-8033S Ratings 43* 18(With infinite heatsink) 1.5(Without heatsink, stand-alone operation) +125 –40 to +125 –1 5.5 ■Applications Power supplies for telecommunication equipment Onboard local power supplies ■Recommended Operating Conditions Parameter DC Input Voltage Range Output Current Range Operating Junction Temperature Range Symbol VIN IO Tjop SI-8033S 5.5 to 28 SI-8050S 7 to 40 Ratings SI-8090S 12 to 40 0 to 3.0 –30 to +125 SI-8120S 15 to 40 SI-8150S 18 to 40 SI-8150S 15.0 Unit V W W °C °C V °C/W Unit V A °C ■Electrical Characteristics Parameter Output Voltage SI-8000S*1 SI-8000SS Efficiency Oscillation Frequency Line Regulation Load Regulation Temperature Coefficient of Output...