As ae KA TI LEGAL KA TI LIZ AZ KA79LXXA LINEAR INTEGRATED CIRCUIT 9-TERMINAL 0.1A NEGATIVE VOLTAGE Tos REGULATORS These regulators employ internal current limiting and thermalshutdown, making them essentially in- 563299 } FEATURES Output current up to 100mA No extemal components Internal thermal over load protection Intamal short circuit current limiting 1: GND 2: Input 3: Output ORDERING INFORMATION Device Package | Operating Temperature KA7 x ~ - SCHEMATIC DIAGRAM SLXKAZ 1 1082 on tesr ie O<GNo R26 Fnis = R22 ep D3 xe Ke Raa + A213 4> IN ELECTRONICS 84KA79LXXA LINEAR INTEGRATED CIRCUIT ABSOLUTE MAXIMUM RATINGS (T,= 25C, unless otherwise specified) Characteristic Symbal Value Unit Input Voltage (~-5V) -30 (-12V to -18V) Vv, -35 Voc (-24V) -40 Operating Junction Temperature Range Torn O~ +125 C Storage Temperature Range Tstc -65~ +150 C KA79LO5A ELECTRICAL CHARACTERISTICS (Vi= 10V, Ilo = 40mA, C)=0.33pF, Ca =0.1nF, OPC =< Ty s + 125C, unless otherwise specified) Characteristic Symbol Test Canditions Min Typ Max | Unit Output Voltage Vo Ti =25C -4.8 - .0 -5.2 Vv -7.0V2V\= -20V 15 150 Line Regulation OVo Ty = 25C mv -8.0V2V,> -20V 100 1.0mMA <s1,<4100MmA 20 60 Load Regulation AV, | Ty =25C mv 1.0mA <1,<40MmA 10 30 -7.0V>Vi> -20V, 1.0mASlos40mA | - 4.75 5,25 Output Voltage - Vo Vv Vi= 1.0V, 1.0mMAslos 70mMA - 4,75 5.25 . Ty + 25C 2.0 6.0 Quiescent Current lo mA Ty = + 125C 5.5 Quiescent With Line ; -8V2V,z -20V 1.5 A 4 m Current Change | with Load 9 | 1.0mA sles 40MmA 0.1 Output Noise Voltage Vn T,= 25C, 10Hzs fs 100KHz 30 pv . gs f= 120Hz, -8.02V,;> -18V Ripple Rejection RR T)=25C 41 60 6B Oropout Voltage Vo Ty = 25C 1.7 Vv * Load and line regulation are specified at constant junction temperature. Change in V, due to heating effects must be taken into account separately. Pulse testing with low duty is used. 85 ELECTRONICSKA79LXXA LINEAR INTEGRATED CIRCUIT KA79L12A ELECTRICAL CHARACTERISTICS (Vi= -19V, lo=40mA, C,=0.33F, Co=O0.1pF, OC = T= + 125C, unless otherwise specified) 1 Characteristic Symbol Test Conditions Min Typ Max | Unit Output Voltage Vo Ty = 25C -11.5} -12.0} -12.5] V -14.5V2V\2 -27V 250 Line Regulation BVo T, = 25C mV -16V2V,2=-27V 200 1.0MA <1,< 100mA 100 Load Regulation AVo Ty= 25C mv 1.0MA 31,65 40mMA 50 -14.5V>V,> -27V, 1.0mMASloS40MA| - 11.4 12.6 Output Voltage Vo Vv V/s -19V, 1.0mMASIlos70MA -11.4 12.6 , Ty= + 25C 6.5 Quiescent Current le mA Ty= + 125C 6.0 Quiescent With Line \ -16V<Vis -27V 1.5 A a m Current Change | with Load 9 | 4.0MA <lo< 40mA 0.1 Output Noise Voitage Vy Ta= 25C, 10Hzsf<100KHz 80 uv : sati f=120Hz, -15V<Vis 25V Ripple Rejection RR T,=25C 37 42 |. dB Dropout Voltage Vo Ty = 25C 1.7 v * Load and line regulation are specified at constant junction temperature. Change in V, due to heating effects must be taken into account separately. Pulse testing with low duty is used. KA79L15A ELECTRICAL CHARACTERISTICS (Vis ~23V, lo=40mA, C,=0.33F, Co=0.1nF, OC <T = + 125C, unless otherwise specified) Characteristic Symbol! Test Conditions Min Typ Max | Unit Output Voltage Vo Ty= 25C -14.4) ~15.0} -15.6) V . . -17.5V2Vi2 -30V 300 Line Regulation AVo | Ty=25C mv ~27VzV.2 -30V 250 . 1.0MA <lo< 100MA 150 Load Regulation QVe Ty = 25C mv 1.0mA <1,<40mMA 75 -17.5V>V\> -90V, 1.0MAslos40mMA| -14.25 -18.75 Output Voltage Vo Vv V;= -23V, 1.0mMAslos 70MA -14.2 -18.75 Ty = + 25C 6.5 Quiescent Current la mA . : Ty= +125C : , 6.0 Quiescent With Line ; ~20V<Vs 30V 1.5 A a m Current Change | with Load | 4.0mA sles 40mA 0.1 Output Noise Voltage Va Tas 25C, 10Hz sf 100KHz 90 pv : tgs f=120Hz, -18.5VsV,s -28.5V Ripple Rejection RR T= 25C 34 39 dB Oropout Voltage V5 Ty = 25C 17 v * Load and line regulation are specified at constant junction temperature. Change in V, due to heating effects must be taken into account separately. Pulse testing with low duty is used. 86 eiecrRoamiccKA79LXXA LINEAR INTEGRATED CIRCUIT KA79L18A ELECTRICAL CHARACTERISTICS (Vi= = 27V, lo=40mA, C= 0.93pF, Co=0.1nF, OC STs = + 125C, unless otherwise specified) Characteristic Symbol Test Conditions Min Typ Max | Unit Output Voltage Vo Ty = 25C -17.3| 18.0/ ~18.7) V a -20.7V2V,= -33V 325 y i i -~ e@ Line Regulation OVo Ty = 25C ~BIVzV.= w33V 275 m TOMA sips 100MA 170 Load Regulation AVo Ty = 25C mV 1.0mMA <1,<40MA 85 0 ~20.7V>Vi> 33V, 1O0mMASlosS40MA} ~ 17.1 - 18.9 y Vol Vo utput Voltage Vi= ~27V, 1.0MASlo<70MA ~417.1 -18.9 Q C Ty= +26C 6.5 A iescent Current m u " la Ty= + 125C 6.0 Quiescent With Line ; -21VsVis -33V 1.5 A A m Current Change | with Load o | 4.0mA <le<40mA 0.1 Output Noise Voltage Vn T,= 25C, 10Hz<{s 100KHz 150 uv : ae f=120Hz, -23VsVis -33V Rippte Rejection RA T)=25C 3 48 dB Dropout Voltage Vo Ty = 25C 1.7 Vv * Load and line regulation are specified at constant junction temperature. Change in V, due to heating effects must be taken into account separately. Pulse testing with low duty is used. KA79L24A ELECTRICAL CHARACTERISTICS (V = -33V, Ilo =40mMA, C,=0.33pF, Co =0.1nF, OC <5 Tis + 125C, unless otherwise specified) Characteristic Symbol Test Conditions Min Typ Max | Unit Output Voltage Vo Ty =25C ~23 24 -25 Vv Line Requlati AV T.=25C -27V2Vi,2 -38V 350 V ine Regulation = m 9 aye - 28V2V,\= 38V 300 ; 1.0mA<1,< 100mMA 200 Load Regulation Avo Ty = 25C mv 1.0mA <!,<40MA 100 -27V>Vi> 38V, 1.0MASlos40mMA | 22.8 25.2 Output Voltage Vo v Vi= -33V, 1.0mMAslos 70mA 22.8 ~ 25.2 , Ty = +25C 6.5 Quiescent Current lq mA : Ty= 4125C 6.0 Quiescent With Line al -28V sVis -38V 1.5 A m. Current Change | with Load [toma ste<40maA 0.1 Output Noise Voltage Vw T, 25C, 10Hz<f = 100KHz 200 uv : wong: f=120Hz, -29VsV,s -35V Ripple Rejection RA T,=25C 31 47 dB Dropout Voitage Vo Ty = 25C 1.7 v " Load and line regulation are specified at constant junction temperature. Change in V, due to heating effects must be taken into account separately. Pulse testing with low duty is used. 87 GIerrRneireKA79OLXXA TYPICAL APPLICATION Design Considerations The KA79LXXA_ Series of fixed voltage regulators are designed with Thermal Overload Protection that shuts down the circuit when subjected to an excessive power overload condition. Internal Short-Circuit Protection that limits the maximum current the circuit will pass. In many jow current applications, compensation Capacitors are not required. However, it is recommended that the regulator input be bypassed with a capacitor if the regulator is connected to ihe power supply filter with !ong wire lengths, or if the output load capacitance is large. An input bypass Fig. 1 POSITIVE AND NEGATIVE REGULATOR LINEAR INTEGRATED CIRCUIT capacitor should be selected to provide good high- frequency characteristics to insure stable operation under all load conditions. A 0.33uF or larger tantalum, mylar, or other capacitor having low internal impedance at high frequencies should be chosen. The bypass capacitor should be mounted with the shortest possible leads directly across the regulator's input terminals. Normally good construction techniques should be used to minimize ground loops and lead resistance drops since the regulator has no external sense lead. Bypassing the output is also recommended. Fig. 2 TYPICAL APPLICATION + KA78LXXA O+Vo INPUT KA7SLXXA o OUTPUT C Co" 0.14F - eT KATSLXXA O-Vo 0,33pF 0.33nF -_ A common ground is required between the input and the output voltages. The input voltage must remain typically 2.0V above the output voltage even during the low point on the input ripple voitage. * = C, is required if reguiator is located an appreciable distance from power supply filter. ** = Co improves stability and transient response. FIFCTRONICS 88