LM79XX LINEAR INTEGRATED CIRCUIT 3 TERMINAL 1A NEGATIVE VOLTAGE REGULATOR DESCRIPTION The Contek LM79XX series of three-terminal negative regulators are available in TO-220 package and with several fixed output voltage, making them useful in a wide range of application. Each type employs internal current limiting, thermal shut-down and safe area protection, making it essentially indestructible. 1 FEATURES *Output current up to 1A *-5V;-6V;-8V;-12V;-15V;-18V;-24V output voltage available *Thermal overload protection *Short circuit protection TO-220 1:GND 2:Input 3:Output BLOCK DIAGRAM GND R1 R2 OUTPUT Voltage reference Protection circuitry RSC INPUT Contek Contek Microelectronics Co.,Ltd. CONTEK http://www.contek-ic.com E-mail:[email protected] 1 LM79XX LINEAR INTEGRATED CIRCUIT ABSOLUTE MAXIMUM RATINGS (Ta=25 PARAMETER C) SYMBOL VALUE UNIT Vi R q JA -35 65 V C /W R q JC 5 C /W Topr Tstg 0 ~ +125 -65 ~ +150 C C Input voltage Thermal resistance junction-air Thermal resistance junction-cases Operating Temperature Storage Temperature Contek7905 ELECTRICAL CHARACTERISTICS (Refer to test circuits, 0<Tj<125 C,Io=500mA,Vi=-10V,Ci=33uF,Co=1uF, unless otherwise specified) PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT Output voltage Vo Line regulation DVo Load regulation DVo Quiescent current Quiescent current change IQ DIQ Output voltage drift Output noise voltage Ripple rejection Dropout voltage Short circuit current peak current DVo/DT VN RR Vo Isc Ipk Tj=25 C 5.0mA<Io<1.0A,Po<15W Vi=-7V to -20V Tj=25 C,Vi=-7V to -25V Tj=25 C,Vi=-8V to -12V Tj=25 C,Io=5.0mA to 1.5A Tj=25 C,Io=250mA to 750mA Tj=25 C Io=5mA to 1.0A Vi=-7V to -25V Io=5mA f=10hz to 100kHz,Ta=25 C f=120Hz, Vi=-8V to -18V Io=1.0A,Tj=25 C Vi=-35V,Ta=25 C Tj=25 C -4.8 -5.0 -5.2 V -4.75 -5.00 10 -5.25 100 10 3 3 0.05 0.1 -0.4 100 60 2 300 2.2 100 50 6 0.5 1.3 V mV mV mV mV mA mA mA mV/ C mV dB V mA A 54 Contek7906 ELECTRICAL CHARACTERISTICS (Refer to test circuits, 0<Tj<125 C,Io=500mA,Vi=-11V,Ci=2.2uF,Co=1uF,unless otherwise specified) PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT Output voltage Vo Line regulation DVo Load regulation DVo Quiescent current Quiescent current change IQ DIQ Output voltage drift Output noise voltage Ripple rejection Dropout voltage Short circuit current peak current DVo/DT VN RR Vo Isc Ipk Tj=25 C 5.0mA<Io<1.0A,Po<15W Vi=-8V to -21V Tj=25 C,Vi=-8V to -25V Tj=25 C,Vi=-9V to -13V Tj=25 C,Io=5.0mA to 1.5A Tj=25 C,Io=250mA to 750mA Tj=25 C Io=5mA to 1.0A Vi=-8V to -25V Io=5mA f=10hz to 100kHz,Ta=25 C f=120Hz, Vi=-9V to -19V Io=1.0A,Tj=25 C Vi=-35V,Ta=25 C Tj=25 C -5.75 -6.00 6-.25 V -5.7 -6.0 10 5 10 3 3 -6.3 120 60 120 60 6 0.5 1.3 V mV mV mV mV mA mA mA mV/ C mV dB V mA A 54 -0.5 130 60 2 300 2.2 Contek Microelectronics Co.,Ltd. CONTEK http://www.contek-ic.com E-mail:[email protected] 2 LM79XX LINEAR INTEGRATED CIRCUIT Contek7908 ELECTRICAL CHARACTERISTICS (Refer to test circuits, 0<Tj<125 C,Io=500mA,Vi=-14V,Ci=2.2uF,Co=1uF,unless otherwise specified) PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT Output voltage Vo Line regulation DVo Load regulation DVo Quiescent current Quiescent current change IQ DIQ Output voltage drift Output noise voltage Ripple rejection Dropout voltage Short citcuit current peak current DVo/DT VN RR Vo Isc Ipk Tj=25 C 5.0mA<Io<1.0A,Po<15W Vi=-10.5V to -23V Tj=25 C,Vi=-10.5V to -25V Tj=25 C,Vi=-11.5V to -17V Tj=25 C,Io=5.0mA to 1.5A Tj=25 C,Io=250mA to 750mA Tj=25 C Io=5mA to 1.0A Vi=-11.5V to -25V Io=5mA f=10hz to 100kHz,Ta=25 C f=120Hz, Vi=-11.5V to -21.5V Io=1.0A,Tj=25 C Vi=-35V,Ta=25 C Tj=25 C -7.7 -8.0 -8.3 V -7.6 -8.0 10 5 12 4 3 0.05 0.1 -0.6 175 60 2 300 2.2 -8.4 100 80 160 80 6 0.5 1.0 V mV mV mV mV mA mA mA mV/ C mV dB V mA A 54 Contek7912 ELECTRICAL CHARACTERISTICS (Refer to test circuits, 0<Tj<125 C,Io=500mA,Vi=-18V,Ci=2.2uF,Co=1uF,unless otherwise specified) PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT Output voltage Vo Line regulation DVo Load regulation DVo Quiescent current Quiescent current change IQ DIQ Output voltage drift Output noise voltage Ripple rejection Dropout voltage Short circuit current peak current DVo/DT VN RR Vo Isc Ipk Tj=25 C 5.0mA<Io<1.0A,Po<15W Vi=-14.5V to -27V Tj=25 C,Vi=-14.5V to -30V Tj=25 C,Vi=-16V to -22V Tj=25 C,Io=5.0mA to 1.5A Tj=25 C,Io=250mA to 750mA Tj=25 C Io=5mA to 1.0A Vi=-14.5V to -30V Io=5mA f=10hz to 100kHz,Ta=25 C f=120Hz, Vi=-15V to -25V Io=1.0A,Tj=25 C Vi=-35V,Ta=25 C Tj=25 C -11.5 -12.0 -12.5 V -11.4 -12 12 6 12 4 3 0.05 0.1 -0.8 200 60 2 300 2.2 -12.6 240 120 240 120 6 0.5 1.0 V mV mV mV mV mA mA mA mV/ C mV dB V mA A 54 Contek Microelectronics Co.,Ltd. CONTEK http://www.contek-ic.com E-mail:[email protected] 3 LM79XX LINEAR INTEGRATED CIRCUIT Contek7915 ELECTRICAL CHARACTERISTICS (Refer to test circuits, 0<Tj<125 C, Io=500mA,Vi=-23V,Ci=2.2uF,Co=1uF,unless otherwise specified) PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT Output voltage Vo Line regulation DVo Load regulation DVo Quiescent current Quiescent current change IQ DIQ Output voltage drift Output noise voltage Ripple rejection Dropout voltage Short circuit current peak current DVo/DT VN RR Vo Isc Ipk Tj=25 C 5.0mA<Io<1.0A,Po<15W Vi=-17.5V to -30V Tj=25 C,Vi=-17.5V to -30V Tj=25 C,Vi=-20V to -26V Tj=25 C,Io=5.0mA to 1.5A Tj=25 C,Io=250mA to 750mA Tj=25 C Io=5mA to 1.0A Vi=-17.5V to -30.5V Io=5mA f=10hz to 100kHz,Ta=25 C f=120Hz, Vi=-18.5V to -28.5V Io=1.0A,Tj=25 C Vi=-35V,Ta=25 C Tj=25 C -14.4 -15.0 -15.6 V -14.25 -15 12 6 12 4 3 0.05 0.1 -0.9 250 60 2 300 2.2 -15.75 300 150 300 150 6 0.5 1.0 V mV mV mV mV mA mA mA mV/ C mV dB V mA A 54 Contek7918 ELECTRICAL CHARACTERISTICS (Refer to test circuits, 0<Tj<125 C,Io=500mA,Vi=-27V,Ci=2.2uF,Co=1uF,unless otherwise specified) PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT Output voltage Vo Line regulation DVo Load regulation DVo Quiescent current Quiescent current change IQ DIQ Output voltage drift Output noise voltage Ripple rejection Dropout voltage Short circuit current peak current DVo/DT VN RR Vo Isc Ipk Tj=25 C 5.0mA<Io<1.0A,Po<15W Vi=-21V to -33V Tj=25 C,Vi=-21V to -33V Tj=25 C,Vi=-24V to -30V Tj=25 C,Io=5.0mA to 1.5A Tj=25 C,Io=250mA to 750mA Tj=25 C Io=5mA to 1.0A Vi=-21V to -32V Io=5mA f=10hz to 100kHz,Ta=25 C f=120Hz, Vi=-22V to -32V Io=1.0A,Tj=25 C Vi=-35V,Ta=25 C Tj=25 C -17.3 -18.0 -18.7 V -17.1 -18 15 8 15 5.0 3 -18.9 360 180 360 180 6 0.5 1.0 V mV mV mV mV mA mA mA mV/ C mV dB V mA A 54 -1 300 60 2 300 2.2 Contek Microelectronics Co.,Ltd. CONTEK http://www.contek-ic.com E-mail:[email protected] 4 LM79XX LINEAR INTEGRATED CIRCUIT Contek7924 ELECTRICAL CHARACTERISTICS (Refer to test circuits, 0<Tj<125 C,Io=500mA,Vi=-33V,Ci=2.2uF,Co=1uF,unless otherwise specified) PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT Output voltage Vo Line regulation DVo Load regulation DVo Quiescent current Quiescent current change IQ DIQ Output voltage drift Output noise voltage Ripple rejection Dropout voltage Short circuit current peak current DVo/DT VN RR Vo Isc Ipk Tj=25 C 5.0mA<Io<1.0A,Po<15W Vi=-27V to -38V Tj=25 C,Vi=-27V to -38V Tj=25 C,Vi=-30V to -36V Tj=25 C,Io=5.0mA to 1.5A Tj=25 C,Io=250mA to 750mA Tj=25 C Io=5mA to 1.0A Vi=-27V to -38V Io=5mA f=10hz to 100kHz,Ta=25 C f=120Hz, Vi=-28V to -38V Io=1.0A,Tj=25 C Vi=-35V,Ta=25 C Tj=25 C -23 -24 -25 V -22.8 -24 15 8 15 5.0 3 -25.2 480 240 480 240 6 0.5 1.0 V mV mV mV mV mA mA mA mV/ C mV dB V mA A -1 400 60 2 300 2.2 54 APPLICATION CIRCUITS C1 2.2 mF C0 1 mF 1 -Vi 2 -Vo 3 Contek LM79XX Fig.1 Fixed output regulator +20V 1 +15V 3 0.33 mF 2 0.1 mF 1N4001 2.2 mF 1 1 mF 1N4001 2 -20V Contek LM7815 Contek LM7915 3 -15V Fig.2 Split power supply(+-15V,1A) Contek Microelectronics Co.,Ltd. CONTEK http://www.contek-ic.com E-mail:[email protected] 5 LM79XX LINEAR INTEGRATED CIRCUIT C3 2.5 mF C1 2.2 mF 1 2 -Vi R1 Contek LM79XX 3 C2 1 mF R2 -Vo Fig.3 Circuit for increasing output voltage Contek Microelectronics Co.,Ltd. CONTEK http://www.contek-ic.com E-mail:[email protected] 6