MC78XX/LM78XXMC78XXA Electrical Characteristics(MC7812) (Refer to test circuit,C<TJ<125C,lo=500mA.VI =19V.CI=0.33uF.Co=0.1uF,unless otherwise specified) MC7812 Parameter Symbol Conditions Min.Typ.Max. Unit TJ=+25C 11.51212.5 Output Voltage Vo 5.0mA≤lo≤1.0APo≤15W VI=14.5V to 27V 11.4 12.6 VI=14.5Vto 30V 10240 Line Regulation(Note1) Regline TJ=+25℃ VI=16V to 22V .30120 mV Load Regulation(Note1) Regload TJ=+25℃ lo=5mA to 1.5A 11240 mV lo 250mA to 750mA 5.0120 Quiescent Current lo T.1=+250C 5.18.0mA Quiescent Current Change lo 5mA to 1.0A 0.10.5 AlQ M=14.5Vto30 0.51.0 mA Output Voltage Drift △Vo/ATlo=5mA -1.mv℃ Output Noise Voltage VN f=10Hz to 100KHz,TA=+25C ·76 ·uVVo Ripple Rejection RR f=120Hz VI=15V to 25V 5571 dB Dropout Voltage l=1AT=+25C Output Resistance ro f=1KHz 18 Short Circuit Current ISC M=35V,TA=+25℃ -230 mA Peak Current IPK TJ=+25℃ 2.2 A Cha effects must be takenMC78XX/LM78XX/MC78XXA 7 Electrical Characteristics (MC7812) (Refer to test circuit ,0°C < TJ < 125°C, IO = 500mA, VI =19V, CI= 0.33µF, CO=0.1µF, unless otherwise specified) Note: 1. 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. Parameter Symbol Conditions MC7812 Unit Min. Typ. Max. Output Voltage VO TJ =+25 oC 11.5 12 12.5 5.0mA ≤ IO≤1.0A, PO≤15W VI = 14.5V to 27V 11.4 12 12.6 V Line Regulation (Note1) Regline TJ =+25 oC VI = 14.5V to 30V - 10 240 mV VI = 16V to 22V - 3.0 120 Load Regulation (Note1) Regload TJ =+25 oC IO = 5mA to 1.5A - 11 240 mV IO = 250mA to 750mA - 5.0 120 Quiescent Current IQ TJ =+25 oC - 5.1 8.0 mA Quiescent Current Change ∆IQ IO = 5mA to 1.0A - 0.1 0.5 mA VI = 14.5V to 30V - 0.5 1.0 Output Voltage Drift ∆VO/∆T IO = 5mA - -1 - mV/ oC Output Noise Voltage VN f = 10Hz to 100KHz, TA =+25 oC - 76 - µV/Vo Ripple Rejection RR f = 120Hz VI = 15V to 25V 55 71 - dB Dropout Voltage VDrop IO = 1A, TJ=+25 oC -2- V Output Resistance rO f = 1KHz - 18 - mΩ Short Circuit Current ISC VI = 35V, TA=+25 oC - 230 - mA Peak Current IPK TJ = +25 oC - 2.2 - A