UTC 79TXXA LINEAR INTEGRATED CIRCUIT 3 TERMINAL 1A NEGATIVE VOLTAGE REGULATOR DESCRIPTION The UTC 79TXXA series of three-terminal negative regulators are available in TO-263 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-263 1:GND 2:Input 3:Output BLOCK DIAGRAM GND R1 R2 OUTPUT Voltage reference Protection circuitry RSC UTC UNISONIC TECHNOLOGIES INPUT CO., LTD. 1 QW-R101-013,A UTC 79TXXA LINEAR INTEGRATED CIRCUIT ABSOLUTE MAXIMUM RATINGS (Ta=25°C) SYMBOL RATING UNIT Input voltage PARAMETER VI -35 V Output Current Io 1 Internally A Power Dissipation Thermal Resistance Junction-Air PD R θ JA Limited W 65 °C/W Thermal Resistance Junction-Cases R θ JC 5 °C/W Operating Junction Temperature Range TOPR 0 ~ +125 °C Storage Temperature Range TSTG -65 ~ +150 °C UTC79T05A 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 ∆Vo Load regulation ∆Vo Quiescent current Quiescent current change IQ ∆IQ ∆Vo/∆T VN RR Vo Isc Ipk Output voltage drift Output noise voltage Ripple rejection Dropout voltage Short circuit current peak current 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 -4.80 -5.0 -5.20 V 10 -5.25 100 V mV mV mV mV mA mA mA mV/°C µV dB V mA A -4.75 54 10 3 3 0.05 0.1 -0.4 100 60 2 300 2.2 100 50 6 0.5 1.3 UTC79T06A 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 ∆Vo Load regulation ∆Vo Quiescent current Quiescent current change IQ ∆IQ Output voltage drift Output noise voltage Ripple rejection Dropout voltage Short circuit current peak current UTC ∆Vo/∆T 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 UNISONIC TECHNOLOGIES -5.76 -6.00 -5.70 10 5 10 3 3 54 -6.24 V -6.30 120 60 120 60 6 0.5 1.3 V mV mV mV mV mA mA mA mV/°C µV dB V mA A -0.5 130 60 2 300 2.2 CO., LTD. 2 QW-R101-013,A UTC 79TXXA LINEAR INTEGRATED CIRCUIT UTC79T08A 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 ∆Vo Load regulation ∆Vo Quiescent current Quiescent current change IQ ∆IQ ∆Vo/∆T VN RR Vo Isc Ipk Output voltage drift Output noise voltage Ripple rejection Dropout voltage Short citcuit current peak current 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 -7.68 -8.0 -7.60 54 10 5 12 4 3 0.05 0.1 -0.6 175 60 2 300 2.2 -8.32 V -8.40 100 80 160 80 6 0.5 1.0 V mV mV mV mV mA mA mA mV/°C µV dB V mA A UTC79T12A 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 ∆Vo Load regulation ∆Vo Quiescent current Quiescent current change IQ ∆IQ Output voltage drift Output noise voltage Ripple rejection Dropout voltage Short circuit current peak current UTC ∆Vo/∆T 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 UNISONIC TECHNOLOGIES -11.52 -12.0 -11.40 54 12 6 12 4 3 0.05 0.1 -0.8 200 60 2 300 2.2 -12.48 V -12.60 240 120 240 120 6 0.5 1.0 V mV mV mV mV mA mA mA mV/°C µV dB V mA A CO., LTD. 3 QW-R101-013,A UTC 79TXXA LINEAR INTEGRATED CIRCUIT UTC79T15A 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 ∆Vo Load regulation ∆Vo Quiescent current Quiescent current change IQ ∆IQ ∆Vo/∆T VN RR Vo Isc Ipk Output voltage drift Output noise voltage Ripple rejection Dropout voltage Short circuit current peak current 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 -14.40 -15.0 -14.25 54 12 6 12 4 3 0.05 0.1 -0.9 250 60 2 300 2.2 -15.60 V -15.75 300 150 300 150 6 0.5 1.0 V mV mV mV mV mA mA mA mV/°C µV dB V mA A UTC79T18A 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 ∆Vo Load regulation ∆Vo Quiescent current Quiescent current change IQ ∆IQ Output voltage drift Output noise voltage Ripple rejection Dropout voltage Short circuit current peak current UTC ∆Vo/∆T 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 UNISONIC TECHNOLOGIES -17.28 -18.0 -17.10 15 8 15 5.0 3 54 -18.72 V -18.90 360 180 360 180 6 0.5 1.0 V mV mV mV mV mA mA mA mV/°C µV dB V mA A -1 300 60 2 300 2.2 CO., LTD. 4 QW-R101-013,A UTC 79TXXA LINEAR INTEGRATED CIRCUIT UTC79T24A 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 ∆Vo Load regulation ∆Vo Quiescent current Quiescent current change IQ ∆IQ ∆Vo/∆T VN RR Vo Isc Ipk Output voltage drift Output noise voltage Ripple rejection Dropout voltage Short circuit current peak current -23.04 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 -24 -22.80 15 8 15 5.0 3 -24.96 V -25.20 480 240 480 240 6 0.5 1.0 V mV mV mV mV mA mA mA mV/°C µV dB V mA A -1 400 60 2 300 2.2 54 APPLICATION CIRCUITS C1 2.2 µF C0 1 µF 1 -Vi 2 UTC 79TXXA -Vo 3 Fig.1 Fixed output regulator +20V +15V 1 UTC 78T15A 3 0.33 µF 2 0.1 µF 1N4001 2.2 µF 1 1 µF 1N4001 2 UTC 79T15A 3 -20V -15V Fig.2 Split power supply(+-15V,1A) UTC UNISONIC TECHNOLOGIES CO., LTD. 5 QW-R101-013,A UTC 79TXXA LINEAR INTEGRATED CIRCUIT C3 2.5 µF R1 C2 1 µF C1 2.2 µF 1 R2 2 UTC 79TXXA 3 -Vi -Vo Fig.3 Circuit for increasing output voltage UTC UNISONIC TECHNOLOGIES CO., LTD. 6 QW-R101-013,A