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| IL79XXC SERIES THREE-TERMINAL NEGATIVE VOLTAGE REGULATORS The IL7900 series of fixed output negative voltage regulators are intended as complements to the IL7800 series devices. These negative regulators are available in the same seven-voltage options as the IL7800 devices. In addition, one extra voltage option commonly employed in MECL systems is also available in the current series. TO-220 AB Pin 1. I nput 2. Ground 3. Output (H eatsink surface connected to Pin 2.) Available in fixed output voltage options from -5.0 to -24 volts, these regulators employ current limiting, thermal shutdown, and safe-area compensation - making them remarkably rugged under most operating conditions. With adequate heatsinking they can deliver output currents in excess of 1.0 ampere. No External Components Required Internal Thermal Overload Protection Internal Short - Circuit Current Limiting Output Transistor Safe - Area Compensation Available in 4% Voltage Tolerance STANDARD APPLICATION input Cin 0.33 F IL79XX output Co 1.0 F Device IL7905 IL7905.2 IL7906 IL7908 type/nominal output voltage 5V IL7912 12 V 5.2 V IL7915 15 V 6V IL7918 18 V 8V IL7924 24 V A common ground is required between the input and the output voltages. The input voltage must remain typically 2.0V more negative even during the high point on the input ripple voltage. XX - these two digits of the type number indicate voltage Cin - is required if regulator is located an appreciable distance from power supply filter Co - improves stability and transient response Maximum ratings (TA = +25 C unless otherwise noted) Rating Input Voltage (-5.0V Vo- 18V) (24 V) Power Dissipation Plastic Package TA = +25 C Derate above TA = +25 C Tc = +25 C Derate above Tc=+95C Storage Junction Temperature Rang Operating Junction Temperature Rang Symbol VI Value -35 -40 Internally Limited 15.4 Internally Limited 200 -65 to +150 0 to +150 Unit Vdc PD 1/RJA PD 1/RJA Tstg TJ Watts mW/C Watts mW/C C C 1 IL79XXC SERIES IL7905 Electrical characteristics (VI = -10V, Io = 500mA, 0C 35 8.0 11 4.0 - 100 50 mV 100 50 -5.25 Vo Vcd IIB IIB eon RR VI-Vo DVo/DT - 4.3 40 70 2.0 -1.0 8.0 1.3 0.5 - mA mA V dB Vdc mV/C IL7905.2 Electrical characteristics (VI = -10V, Io = 500mA, 0C Typ -5.2 8.0 2.2 Max -5.4 52 27 Unit Vdc mV Regload -4.95 37 8.5 12 4.5 - 105 52 mV 105 52 -5.45 Vo Vcd IIB IIB eon RR VI-Vo DVo/Vo - 4.3 42 68 2.0 -1.0 8.0 1.3 0.5 - mA mA V dB Vdc mV/C Note: 1. Load and line regulation are specified at constant junction temperature. Changes in Vo due to heating effects must be taken into account separately .Pulse testing with low duty cycle is used. 2 IL79XXC SERIES IL7906 Electrical characteristics (VI = -11V, Io = 500mA, 0C 43 10 13 5.0 - 120 60 mV 120 60 -6.3 Vo Vcd IIB IIB eon RR VI-Vo DVo/Vo - 4.3 45 65 2.0 -1.0 8.0 1.3 0.5 - mA mA V dB Vdc mV/C IL7908 Electrical characteristics (VI = -14V, Io = 500mA, 0C Typ -8.0 12 5.0 Max -8.3 80 40 Unit Vdc mV Regload -7.6 50 22 26 9.0 - 160 80 mV 160 80 -8.4 Vo Vcd IIB IIB eon RR VI-Vo DVo/Vo - 4.3 52 62 2.0 -1.0 8.0 1.0 0.5 - mA mA V dB Vdc mV/C Note: 1. Load and line regulation are specified at constant junction temperature. Changes in Vo due to heating effects must be taken into account separately. Pulse testing with low duty cycle is used. 3 IL79XXC SERIES IL7915 Electrical characteristics (VI = -23V, Io = 500mA, 0C 57 27 68 25 - 300 150 mV 300 150 -15.75 Vo Vcd IIB IIB eon RR VI-Vo DVo/Vo - 4.4 90 60 2.0 -1.0 8.0 1.0 0.5 - mA mA V dB Vdc mV/C IL7912 Electrical characteristics (VI = -19V, Io = 500mA, 0C Typ -12 13 6.0 Max -12.5 120 60 Unit Vdc mV Regload -11.4 55 24 46 17 - 240 120 mV 240 120 -12.6 Vo Vcd IIB IIB eon RR VI-Vo DVo/Vo - 4.4 75 61 2.0 -1.0 8.0 1.0 0.5 - mA mA V dB Vdc mV/C Note: 1. Load and line regulation are specified at constant junction temperature. Changes in Vo due to heating effects must be taken into account separately.Pulse testing with low duty cycle is used. 4 IL79XXC SERIES IL7918 Electrical characteristics (VI = -27V, Io = 500mA, 0C 90 50 110 55 - 360 180 mV 360 180 -18.9 Vo Vcd IIB IIB eon RR VI-Vo DVo/Vo - 4.5 110 59 2.0 -1.0 8.0 1.0 0.5 - mA mA V dB Vdc mV/C IL7924 Electrical characteristics (VI = -33V, Io = 500mA, 0C Typ -12 31 14 Max -12.5 240 120 Unit Vdc mV Regload -22.8 118 70 150 85 - 480 240 mV 480 240 -25.2 Vo Vcd IIB IIB eon RR VI-Vo DVo/Vo - 4.6 170 56 2.0 -1.0 8.0 1.0 0.5 - mA mA V dB Vdc mV/C Note: Load and line regulation are specified at constant junction temperature. Changes in Vo due to heating effects must be taken into account separately. Pulse testing with low duty cycle is used. 5 |
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