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MC79XX Scheda tecnica(PDF) 6 Page - Fairchild Semiconductor |
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MC79XX Scheda tecnica(HTML) 6 Page - Fairchild Semiconductor |
6 / 15 page MC79XX (LM79XX) (KA79XX/A) FIXED VOLTAGE REGULATOR (NEGATIVE) LM7912 ELECTRICAL CHARACTERISTICS (VI= 18V, lO =500mA, 0 °C ≤T J ≤ +125°C, C I =2.2 µF, C O = 1 µF, unless otherwise specified.) * Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must be taken into account separately. Pulse testing with low duty is used. Characteristic Symbol Test Conditions Min Typ Max Unit TJ = +25 °C -11.5 -12 -12.5 Output Voltage VO IO = 5mA to 1A, PO 15W VI = -15.5 to -27V -11.4 -12 -12.6 V VI = -14.5 to -30V 12 240 VI= -16 to -22V 6 120 TJ =+ 25 °C IO = 5mA to 1.5A 12 240 TJ =+ 25 °C IO = 250 to 750mA 4 120 Quiescent Current IQ TJ =+ 25 °C 3 6 mA IO = 5mA to 1A 0.05 0.5 VI = -15 to -30V 0.1 1 Temperature Coefficient of VD ∆V O/ ∆T IO = 5mA -0.8 mV/ °C Output Noise Voltage VN f = 10Hz to 100KHz TA =+ 25 °C 200 µV Ripple Rejection RR f = 120Hz ∆V I = 10V 54 60 dB Dropout Voltage VD TJ= +25 °C IO = 1A 2 V Short Circuit Current ISC TJ=+ 25 °C, V I = -35V 300 mA Peak Current IPK TJ=+ 25 °C 2.2 A Line Regulation Load Regulation ∆V O ∆V O mV TJ = 25 °C mV Quiescent Current Change ∆I Q mA |
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