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| 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 TO-263 FEATURES *Output current up to 1A *-5V, -6V, -8V, -9V, -12V, -15V, -18V, -24V output voltage available *Thermal overload protection *Short circuit protection 1 TO-263-3 1:GND 2:Input 3:Output BLOCK DIAGRAM GND R1 R2 OUTPUT Voltage reference Protection circuitry RSC INPUT UTC UNISONIC TECHNOLOGIES CO., LTD. 1 QW-R101-013,C, UTC 79TXXA PARAMETER Input voltage Output Current Power Dissipation Thermal Resistance Junction-Air LINEAR INTEGRATED CIRCUIT SYMBOL VI Io PD R JA R JC Topr Tstg Internally 65 5 0 ~ +125 -65 ~ +150 ABSOLUTE MAXIMUM RATINGS (Ta=25C) RATING -35 1 Limited UNIT V A W C/W C/W C C Thermal Resistance Junction-Cases Operating Junction Temperature Range Storage Temperature Range UTC79T05A ELECTRICAL CHARACTERISTICS (Refer to test circuits, 0 UTC79T06A ELECTRICAL CHARACTERISTICS (Refer to test circuits, 0 -0.5 130 60 2 300 2.2 UTC UNISONIC TECHNOLOGIES CO., LTD. 2 QW-R101-013,C, UTC 79TXXA Output voltage Line regulation Load regulation Quiescent current Quiescent current change Output voltage drift Output noise voltage Ripple rejection Dropout voltage Short citcuit current peak current LINEAR INTEGRATED CIRCUIT Vo Vo Vo IQ IQ Vo/T VN RR Vo Isc Ipk Tj=25C 5.0mA (Refer to test circuits, 0 UTC 79T09A ELECTRICAL CHARACTERISTICS (Refer to test circuits, 0 V V mV mV mV mV mA mA mA mV/ C V dB V mA A Vo Vo Iq Iq Vo/T VN RR Vd ISC IPK 54 UTC79T12A ELECTRICAL CHARACTERISTICS (Refer to test circuits, 0 UNISONIC TECHNOLOGIES CO., LTD. 3 QW-R101-013,C, UTC 79TXXA PARAMETER Load regulation Quiescent current Quiescent current change Output voltage drift Output noise voltage Ripple rejection Dropout voltage Short circuit current peak current LINEAR INTEGRATED CIRCUIT SYMBOL Vo IQ IQ Vo/T VN RR Vo Isc Ipk TEST CONDITIONS Tj=25C,Vi=-16V to -22V Tj=25C,Io=5.0mA to 1.0A Tj=25C,Io=250mA to 750mA Tj=25C Io=5mA to 1.0A Vi=-14.5V to -30V Io=5mA f=10hz to 100kHz,Ta=25C f=120Hz, Vi=-15V to -25V Io=1.0A,Tj=25C Vi=-35V,Ta=25C Tj=25C MIN TYP 6 12 4 3 0.05 0.1 -0.8 200 60 2 300 2.2 MAX 120 240 120 6 0.5 1.0 UNIT mV mV mV mA mA mA mV/C V dB V mA A 54 UTC79T15A ELECTRICAL CHARACTERISTICS (Refer to test circuits, 0 UTC79T18A ELECTRICAL CHARACTERISTICS (Refer to test circuits, 0 -1 300 60 2 300 2.2 UTC UNISONIC TECHNOLOGIES CO., LTD. 4 QW-R101-013,C, UTC 79TXXA Output voltage Line regulation Load regulation Quiescent current Quiescent current change Output voltage drift Output noise voltage Ripple rejection Dropout voltage Short circuit current peak current LINEAR INTEGRATED CIRCUIT Vo Vo Vo IQ IQ Vo/T VN RR Vo Isc Ipk Tj=25C 5.0mA (Refer to test circuits, 0 -1 400 60 2 300 2.2 APPLICATION CIRCUITS C1 2.2 F 1 -Vi 2 C0 1 F -Vo UTC 79TXXA 3 Fig.1 Fixed output regulator +20V 1 0.33 F +15V 3 0.1 F 1N4001 UTC 78T15A 2 2.2 F 2 -20V 1 1 F 3 1N4001 UTC 79T15A -15V Fig.2 Split power supply(+-15V,1A) UTC UNISONIC TECHNOLOGIES CO., LTD. 5 QW-R101-013,C, UTC 79TXXA C1 2.2 F LINEAR INTEGRATED CIRCUIT C3 2.5 F 1 R2 2 R1 C2 1 F UTC 79TXXA 3 -Vo -Vi Fig.3 Circuit for increasing output voltage UTC assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all UTC products described or contained herein. UTC products are not designed for use in life support appliances, devices or systems where malfunction of these products can be reasonably expected to result in personal injury. Reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. The information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed without notice. UTC UNISONIC TECHNOLOGIES CO., LTD. 6 QW-R101-013,C, |
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