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KA378R12C Datasheet(PDF) 2 Page - Fairchild Semiconductor |
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KA378R12C Datasheet(HTML) 2 Page - Fairchild Semiconductor |
2 / 9 page KA378R12C 2 Absolute Maximum Ratings Electrical Characteristics (Vin = 15V, Io = 1.5A, 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 environments. -.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 3.0 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 Shutdown Temperature Ttsd 150 °C- Storage Temperature Tstg -65 ~ 150 °C- Parameter Symbol Conditions Min. Typ. Max. Unit Output Voltage Vo - 11.7 12.0 12.3 V Load Regulation Rload 5mA < Io < 3A - 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 = 3A - - 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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