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KA78T12 Arkusz danych(PDF) 4 Page - Fairchild Semiconductor |
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KA78T12 Arkusz danych(HTML) 4 Page - Fairchild Semiconductor |
4 / 8 page KA78TXX 4 Electrical Characteristics(KA78T15) (VI = 23V, IO = 3.0 A, 0 °C ≤ TJ ≤ +125 °C, Po ≤ PMAX , unless otherwise specified.) Note: 1. Load and line regulation are specified at constant junction temperature. Change in Vo due heating effects must be taken into account separately. Pulse testing with low duty is used. ( PMAX = 25W) Parameter Symbol Conditions Min. Typ. Max. Unit Output Voltage Vo 5mA ≤ Io ≤ 3.0A , TJ =+25 °C 17.5V ≤ VI ≤ 30V, 5mA ≤ Io ≤ 2.0A 14.4 14.25 15 15 15.6 15.75 V Line Regulation (Note1) ∆VO 17.6V ≤ VI ≤ 40V , Io=5mA, TJ =+25 °C 17.6V ≤ VI ≤ 40V , Io=1.0A, TJ =+25 °C 18V ≤ VI ≤ 30V, Io =2.0A 20V ≤ VI ≤ 26V, Io =3.0A -7.5 55 mV Load Regulation (Note1) ∆VO 5mA ≤ Io ≤ 3.0A , TJ =+25 °C 5mA ≤ Io ≤ 3.0A - 10 15 30 80 mV mV Thermal Regulation REGT Pulse =10ms, P = 20W TA = +25 °C - 0.002 0.03 %Vo/W Quiescent Current IQ 5mA ≤ Io ≤ 3.0A , TJ =+25 °C 5mA ≤ Io ≤ 3.0A - 3.5 4.0 5.0 6.0 mA mA Quiescent Current Change ∆IQ 17.6V ≤ VI ≤ 40V, Io = 5mA TJ =+25 °C ; 18V ≤ VI ≤ 30V, Io =2.0A ; 5mA ≤ Io ≤ 3.0A -0.1 0.8 mA Ripple Rejection RR f = 120Hz, 18.5V ≤ VI ≤ 28.5V, Io = 2.0A 55 65 - dB Dropout Voltage VD Io = 3A ,TJ =+25 °C- 2.2 2.5 V Output Noise Voltage VN TA =+25 °C, 10Hz ≤ f ≤ 100KHz - 10 - µV/Vo Peak Output Current IPK TA =+25 °C- 5.0 - A Output Resistance Ro f = 1.0kHz - 2.0 - m Ω Short Circuit Current Limit Isc VI = 40V, TJ =+25 °C- 1.0 2.0 A Average Temperature Coefficient of Output Voltage ∆VO/∆T Io = 5.0mA - 0.5 - mV/ °C |
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