Datenblatt-Suchmaschine für elektronische Bauteile |
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KA278R12TU Datenblatt(PDF) 2 Page - Fairchild Semiconductor |
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KA278R12TU Datenblatt(HTML) 2 Page - Fairchild Semiconductor |
2 / 8 page KA278R12 2 Absolute Maximum Ratings Electrical Characteristics (Vin=15V, Io=1.0A, Ta=25 °C , unless otherwise specified) Note: 1. These parameters, although guaranteed, are not 100% tested in production. 2. Junction -to -case thermal resistance test enviroments. -. Pneumatic heat sink fixture. -. Clamping pressure 60psi through 12mm diameter cylinder. -. Thermal grease applied between PKG and heat sink fixture Parameter Symbol Value Unit Remark Input Voltage Vin 35 V - Disable Voltage Vdis 35 V - Output Current Io 2.0 A - Power Dissipation 1 Pd1 1.5 W No Heatsink Power Dissipation 2 Pd2 15 W With Heatsink Junction Temperature Tj 150 °C- Operating Temperature Topr -20~80 °C- Thermal Resistance, Junction-to Case (Note2) R θjc 2.9 °C/W - Thermal Resistance, Junction-to-Air (Note2) R θja 48.51 °C/W - Thermal Shutdown Temperature Ttsd 150 °C- Parameter Symbol Conditions Min. Typ. Max. Unit Output Voltage Vo - 11.7 12 12.3 V Load Regulation Rload 5mA < Io < 2A - 0.1 2.0 % Line Regulation Rline 13V < Vin < 29V - 0.5 2.5 % Ripple Rejection Ratio RR note1 45 55 - dB Dropout Voltage Vdrop Io = 2A - - 0.5 V Disable Voltage High VdisH Output Active 2.0 - - V Disable Voltage Low VdisL Output Disabled - - 0.8 V Disable Bias Current High IdisH Vdis = 2.7V - - 20 µA Disable Bias Current Low IdisL Vdis = 0.4V - - -0.4 mA Quiescent Current Iq Io = 0A - - 10 mA |
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