UNISONIC TECHNOLOGIES CO.,

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1 UNISONIC TECHNOLOGIES CO., 3 TERMINAL 1A NEGATIVE VOLTAGE REGULATOR DESCRIPTION 1 TO-263 The UTC 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 FEATURES *Output current up to 1A *-5V, -6V, -8V, -9V, -12V, -15V, -18V, -24V output voltage available *Thermal overload protection *Short circuit protection ORDERING INFORMATION Ordering Number Pin Assignment Package Lead Free Halogen Free Packing L-TQ2-R G-TQ2-R TO-263 G I O Tape Reel L-TQ2-T G-TQ2-T TO-263 G I O Tube L-TQ3-R G-TQ3-R TO G I O Tape Reel L-TQ3-T G-TQ3-T TO G I O Tube Note: Pin Code: I: Input G: GND O: Output 1 of 7 Copyright 2011 Unisonic Technologies Co.,

2 MARKING INFORMATION PACKAGE VOLTAGE CODE MARKING TO-263 TO :5.0V 06 :6.0V 08 :8.0V 09 :9.0V 12 :12V 15 :15V 18 :18V 24 :24V BLOCK DIAGRAM GND R1 Voltage reference R2 OUTPUT Protection circuitry RSC INPUT UNISONIC TECHNOLOGIES CO., LTD 2 of 7

3 ABSOLUTE MAXIMUM RATINGS (T A =25, unless otherwise specified) PARAMETER SYMBOL RATING UNIT Input voltage V IN -35 V Output Current I OUT 1 A Power Dissipation P D Internally Limited W Operating Temperature T OPR 0 ~ +125 Storage Temperature T STG -65 ~ +150 Note: Absolute maximum ratings are those values beyond which the device could be permanently damaged. Absolute maximum ratings are stress ratings only and functional device operation is not implied. THERMAL DATA PARAMETER SYMBOL RATINGS UNIT Junction to Ambient θ JA 65 /W Junction to Case θ JC 5 /W ELECTRICAL CHARACTERISTICS (Refer to test circuits, T J = 0 С-125, I OUT =500mA, C O =1uF, unless otherwise specified) FOR 79T05A (V IN =-10V, C I =33uF) T J = V I OUT =5mA ~ 1A, P D 15W, V IN = -7V ~ -20V V Δ T J =25, V IN =-7V ~ -25V mv T J =25, V IN =-8V ~ -12V mv Δ T J =25, I OUT =5mA ~ 1A mv T J =25, I OUT =250mA ~ 750mA 3 50 mv V IN =-7V ~ -25V ma Temperature coefficient of V O ΔV O /ΔT I OUT =5mA -0.4 mv/ Output Noise Voltage en f=10hz ~ 100kHz, T A = μv Ripple Rejection RR f=120hz, V IN =-8V ~ -18V db FOR 79T06A (V IN =-11V, C I =2.2uF) T J = V I OUT =5mA ~ 1A, P D 15W, V IN =-8V~ -21V V Δ T J =25, V IN =-8V ~ -25V mv T J =25, V IN =-9V ~ -13V 5 60 mv Δ T J =25, I OUT =5mA ~ 1A mv T J =25, I OUT =250mA ~ 750mA 3 60 mv I OUT =5mA ~ 1A 0.5 ma V IN =-8V ~ -25V 1.3 ma Temperature coefficient of V O ΔV O /ΔT I OUT =5mA -0.5 mv/ Output Noise Voltage en f=10hz ~ 100kHz, T A = μv Ripple Rejection RR f=120hz, V IN =-9V ~ -19V db UNISONIC TECHNOLOGIES CO., LTD 3 of 7

4 ELECTRICAL CHARACTERISTICS(Cont.) FOR 79T08A (V IN =-14V, C I =2.2uF) T J = V I OUT =5mA~1A, P D 15W, V IN =-10.5V~-23V V Δ T J =25, V IN =-10.5V ~ -25V mv T J =25, V IN =-11.5V ~ -17V 5 80 mv Δ T J =25, I OUT =5mA ~ 1A mv T J =25, I OUT =250mA ~ 750mA 4 80 mv V IN =-11.5V ~ -25V ma Temperature coefficient of V O ΔV O /ΔT I OUT =5mA -0.6 mv/ Output Noise Voltage en f=10hz ~ 100kHz,T A = μv Ripple Rejection RR f=120hz, V IN =-11.5V ~ -21.5V db Dropout Voltage V D I OUT =1.0A,T J =25 2 V Short-Circuit Current I SC V IN =-35V,T A = ma FOR 79T09A (V IN =-15V, C I =2.2uF) T J = V I OUT =5mA~1A, P D 15W, V IN =-11.5V~-23V V Δ T J =25, V IN =-11.5V ~ -26 V mv T J =25, V IN =-12V ~ -18V 5 90 mv Δ T J =25, I OUT =5mA ~ 1A mv T J =25, I OUT =0.25A A 4 90 mv V IN =-11.5V ~ -26V ma Temperature coefficient of V O ΔV O /ΔT I OUT =5mA -0.6 mv/ Output Noise Voltage en f=10hz ~ 100kHz, T A = μv Ripple Rejection RR f=120hz,t J =25, V IN =-12.5V ~ -22.5V db Dropout Voltage V D I OUT =1.0A, T J = V UNISONIC TECHNOLOGIES CO., LTD 4 of 7

5 ELECTRICAL CHARACTERISTICS(Cont.) FOR 79T12A (V IN =-18V, C I =2.2uF) T J = V I OUT =5mA~1A, P D 15W, V IN =-14.5V~-27V V Δ T J =25, V IN =-14.5V ~ -30V mv T J =25, V IN =-16V ~ -22V mv Δ T J =25, I OUT =5mA ~ 1A mv T J =25, I OUT =250mA ~ 750mA mv V IN =-14.5V ~ -30V ma Temperature coefficient of V O ΔV O /ΔT I OUT =5mA -0.8 mv/ Output Noise Voltage en f=10 Hz ~ 100kHz, T A = μv Ripple Rejection RR f=120hz, V IN =-15V ~ -25V db FOR 79T15A (V IN =-23V, C I =2.2uF) T J = V I OUT =5mA~1A, P D 15W, V IN =-17.5V~ -30V V Δ T J =25, V IN =-17.5V to -30V mv T J =25, V IN =-20V to -26V mv Δ T J =25, I OUT =5mA ~ 1A mv T J =25, I OUT =250mA ~ 750mA mv V IN =-17.5V to -30.5V ma Temperature coefficient of V O ΔV O /ΔT I OUT =5mA -0.9 mv/ Output Noise Voltage en f=10 Hz ~ 100kHz,T A = μv Ripple Rejection RR f=120hz, V IN =-18.5V to -28.5V db UNISONIC TECHNOLOGIES CO., LTD 5 of 7

6 ELECTRICAL CHARACTERISTICS(Cont.) FOR 79T18A (V IN =-27V, C I =2.2uF) T J = V I OUT =5mA~1A, P D 15W, V IN =-21V~-33V V Δ T J =25, V IN =-21V ~ -33V mv T J =25, V IN =-24V ~ -30V mv Δ T J =25, I OUT =5mA ~ 1A mv T J =25, I O =250mA ~ 750mA mv I OUT =5mA ~ 1A 0.5 ma V IN =-21V ~ -32V 1.0 ma Temperature coefficient of V O ΔV O /ΔT I O =5mA -1 mv/ Output Noise Voltage en f=10hz ~ 100kHz, T A = μv Ripple Rejection RR f=120hz, V IN =-22V ~ -32V db Dropout Voltage V D I O =1.0A, T J =25 2 V FOR 79T24A (V IN =-33V, C I =2.2uF) T J = V I OUT =5mA ~ 1A, P D 15W, V IN =-27V~ -38V V Δ T J =25, V IN =-27V ~ -38V mv T J =25, V IN =-30V ~ -36V mv Δ T J =25, I OUT =5mA ~ 1A mv T J =25, I OUT =250mA ~ 750mA mv I OUT =5mA ~ 1A 0.5 ma V IN =-27V ~ -38V 1.0 ma Temperature coefficient of V O ΔV O /ΔT I OUT =5mA -1 mv/ Output Noise Voltage en f=10hz ~ 100kHz, T A = μv Ripple Rejection RR f=120hz, V IN =-28V ~ -38V db UNISONIC TECHNOLOGIES CO., LTD 6 of 7

7 APPLICATION CIRCUITS Fig.1 Fixed output regulator Fig.2 Split power supply (+-15V, 1A) -V I C1 2.2 F C3 R1 2.5 F C2 1 F 1 R2 2 UTC 3 -V O 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. UNISONIC TECHNOLOGIES CO., LTD 7 of 7