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KA78TXX 데이터시트(PDF) 2 Page - Fairchild Semiconductor |
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2 / 8 page KA78TXX 2 Absolute Maximum Ratings Electrical Characteristics(KA78T05) (VI = 10V, 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 Value Unit Input Voltage (for VO = 5V to 12V) (for VO = 15V) VI 35 40 V V Power Dissipation PD Internally limited - Thermal Resistance, Junction to Air Tc = +25 °C R θJA 65 °C/W Thermal Resistance ,Junction to Case R θJC 2.5 °C/W Operating Junction Temperature Range TJ 0 ~ +150 °C Storage Temperature Range TSTG -65 ~ +150 °C Parameter Symbol Conditions Min. Typ. Max. Unit Output Voltage Vo 5mA ≤≤≤≤ Io ≤≤≤≤ 3.0A , TJ = +25 °C 7.3V ≤≤≤≤ VI ≤≤≤≤ 20V, 5mA ≤≤≤≤ Io ≤≤≤≤ 2.0A 4.8 4.75 5.0 5.0 5.2 5.25 V Line Regulation (Note1) ∆VO 7.2V ≤≤≤≤ VI ≤≤≤≤ 35V , Io=5mA, TJ =+25 °C 7.2V ≤≤≤≤ VI ≤≤≤≤ 35V , Io=1.0A, TJ = +25 °C 7.5V ≤≤≤≤ VI ≤≤≤≤ 20V, Io =2.0A 8.0V ≤≤≤≤ VI ≤≤≤≤ 12V, Io =3.0A -3.0 2.5 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 7.2V ≤ VI ≤ 35V, Io = 5mA TJ = +25 °C ; 7.5V ≤ VI ≤ 20V, Io =2.0A ; 5mA ≤ Io ≤ 3.0A -0.1 0.8 mA Ripple Rejection RR f = 120Hz, 8V ≤ VI ≤ 18V, Io = 2.0A - 75 - 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 = 35V, TJ =+25 °C- 1.5 2.5 A Average Temperature Coefficient of Output Voltage ∆VO/∆T Io = 5.0mA - 0.2 - mV/ °C |
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