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| UTC 79DXX LINEAR INTEGRATED CIRCUIT 3 TERMINAL 0.5A NEGATIVE VOLTAGE REGULATOR DESCRIPTION The UTC 79DXX series of three-terminal negative regulators are available in TO-252 and TO-251 packages 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-252 FEATURES *Output current up to 0.5A *-5V; -6V;-8V;-12V;-15V;-18V;-24V output voltage available *Thermal overload protection *Short circuit protection 1 TO-251 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-R101-012,D UTC 79DXX PARAMETER Input voltage (for Vo=-5 ~ -18V) (for Vo=-20 ~-24V) LINEAR INTEGRATED CIRCUIT SYMBOL Vi R JA R JC Topr Tstg ABSOLUTE MAXIMUM RATINGS (Ta=25C) VALUE -35 -40 65 5 0 ~ +125 -65 ~ +150 UNIT V C /W C /W C C Thermal resistance junction-air Thermal resistance junction-cases Operating Temperature Storage Temperature UTC 79D05 ELECTRICAL CHARACTERISTICS (Refer to test circuits, 0 UTC 79D06 ELECTRICAL CHARACTERISTICS (Refer to test circuits, 0 -0.5 130 60 2 UTC UNISONIC TECHNOLOGIES CO., LTD. 2 QW-R101-012,D UTC 79DXX Output voltage Line regulation Load regulation Quiescent current Quiescent current change Output voltage drift Output noise voltage Ripple rejection Dropout voltage LINEAR INTEGRATED CIRCUIT Vo Vo Vo IQ IQ Vo/T VN RR Vd Tj=25C 5.0mA (Refer to test circuits, 0 UTC 79D09 ELECTRICAL CHARACTERISTICS (Refer to test circuits, 0 UTC UNISONIC TECHNOLOGIES CO., LTD. 3 QW-R101-012,D UTC 79DXX Output voltage Line regulation Load regulation Quiescent current Quiescent current change Output voltage drift Output noise voltage Ripple rejection Dropout voltage LINEAR INTEGRATED CIRCUIT Vo Vo Vo IQ IQ Vo/T VN RR Vd Tj=25C 5.0mA (Refer to test circuits, 0 UTC 79D15 ELECTRICAL CHARACTERISTICS (Refer to test circuits, 0 UTC 79D18 ELECTRICAL CHARACTERISTICS (Refer to test circuits, 0 -1 300 60 2 UTC UNISONIC TECHNOLOGIES CO., LTD. 4 QW-R101-012,D UTC 79DXX Output voltage Line regulation Load regulation Quiescent current Quiescent current change Output voltage drift Output noise voltage Ripple rejection Dropout voltage LINEAR INTEGRATED CIRCUIT Vo Vo Vo IQ IQ Vo/T VN RR Vd Tj=25C 5.0mA (Refer to test circuits, 0 -1 400 60 2 APPLICATION CIRCUITS C1 2.2 F 1 -Vi 2 C0 1 F -Vo UTC 79DXX 3 Fig.1 Fixed output regulator +20V 1 0.33 F UTC 78D15 2 +15V 3 0.1 F 1N4001 2.2 F 2 -20V 1 1 F 3 1N4001 UTC 79D15 -15V Fig.2 Split power supply (+-15V, 0.5A) UTC UNISONIC TECHNOLOGIES CO., LTD. 5 QW-R101-012,D UTC 79DXX LINEAR INTEGRATED CIRCUIT C1 2.2 F 2 -Vi C3 2.5 F 1 R1 C2 1 F R2 UTC 79DXX 3 -Vo 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-R101-012,D |
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