KA78R12 Fairchild Semiconductor, KA78R12 Datasheet
KA78R12
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KA78R12 Summary of contents
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... The KA78R12 is a low-dropout voltage regulator suitable for various electronic equipments. It provides constant volt- age power source with TO-220 4 lead full mold package. Dropout voltage of KA78R12 is below 0.5V in full rated current(1A). This regulator has various function such as peak current protection, thermal shut down, overvoltage pro- tection and output disable function ...
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... KA78R12 Absolute Maximum Ratings Parameter Input Voltage Disable Voltage Output Current Power Dissipation 1 Power Dissipation 2 Junction Temperature Operating Temperature Electrical Characteristics (Vin =15V 0.5A unless otherwise specified) Parameter Symbol Output Voltage Load Regulation Line Regulation Ripple Rejection Ratio Dropout Voltage Disable Voltage High ...
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... Figure 2.Quiescent Current vs. Input Voltage 12.06 12.04 12.02 12.00 11.98 11.96 11.94 11.92 2 2.5 3 Figure 4.Output Voltage vs. Temperature(Tj) 0.6 0.5 0.4 0.3 0.2 0.1 0 100 125 o C) Figure 6.Dropout Voltage vs. Junction Temperature KA78R12 RL Input voltage Vin ( 100 125 o TEMPERATURE Tj( C) Io=1A 0.75A 0.5A 0.25A -25 0 ...
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... KA78R12 Typical Perfomance Characteristics (continued - TEMPERATURE TJ( Figure 7.Power Dissipation vs. Temperature(Ta 100 125 o C) Figure 8. Overcurrent Protection Characteristics 100 100 100 0.5 0.5 0.5 1.0 1.0 1.0 1.5 1.5 1.5 2.0 2.0 2.0 2.5 2.5 2.5 Output Current(A) Output Current(A) (Typical Value) 3 ...
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... Typical Application Vin • required if regulator is located an appreciable distance from power supply filter. • Co improves stability and transient response.(Co > Vdis Figure 1.Application Circuit KA78R12 Vo GND Disable Signal 5 ...
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... KA78R12 Mechanical Dimensions Package 6 Dimensions in millimeters TO-220F-4L ...
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... Ordering Information Product Number Package KA78R12 TO-220F-4L Operating Temperature - KA78R12 7 ...
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... KA78R12 DISCLAIMER FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. FAIRCHILD DOES NOT ASSUME ANY LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCT OR CIRCUIT DESCRIBED HEREIN; NEITHER DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS. ...