LM79L05

LM79L00 FCI | Alldatasheet

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LM79L00 Series 3-Terminal Negative Semiconductor Output Voltage Regulators (THREE-TERMINAL NEGATIVE VOLTAGE REGULATORS. T he LM79L00 Series negative voltage regulators most applications, no external components are required are inexpensive, easy-to-use devices suitable for for operation. numerous applications requiring up to 100 mA. Like The LM79L00 devices are useful for on-card the higher powered © LM7900 Series negative regulation or any other application where a regulated regulators, this series features thermal shutdown and negative voltage at a modest current level is needed. current limiting, making them remarkably rugged.In These regulators offer substantial advantage over the common resistor/zener diode approach. PIN ARRANGEMENT, * No External Components Required ¢ Internal Short-Circuit Current Limiting «Internal Thermal Overload Protection © Low Cost ws * Complementary Positive Regulators Offered PIN 1. GROUND (LM78L00 Series) 2. INPUT 3, OUTPUT * Available in 42% Voltage Tolerance : ‘CIRCUIT SCHEMATIC (TYPICAL CONNECTING CIRCUIT. REPRESENTATIVE CIRCUIT SCHEMATIC PIN LVour s.GNo oe , ; ¥] 2. Vow 6. Vow ; mu ‘Be 3. Vu 7.Vo0 a - Le fie et” ° pe [ee ms ‘SOP. is an iternally modified SO-8 Package. Pins 23,6 snd 7 are electrically common to tbe die anach fag. This seen imeral lead Faroe modiSicaion decreases package ther- ‘mal resistance and increases power dissipation capability ‘when appropriately mounted on a printed circuit board, ‘SOP-8 conforms to all external dimensions of the standa- ard 50-8 Package 2-22

LM79L00 Series 3-Terminal Negative Semiconductor Output Voltage Regulators ABSOLUTE MAXIMUM RATINGS (T, = +25¢) ) [Rating | Symbol [LM79L00 Series | Unit | | Taput Voltage Vine [ao [Gunction TemperatureRange | T; [| to 50 Te Note: *1. LM79105 *2. LM79L 12, LM79L15, LM7SL18 *3. LM79L24 M79LO5 Series ELECTRICAL CHARACTERISTICS (Vr -10V, Io = 40 mA, C= 0.33 HF, Co= 0.1 WF, 0% < Ty < 125ecunless otherwise noted.) [cartes | aymtet [mPa | a Characteristic Symbol |" Min | Typ | Mex | [OurputVolageT=+25°C) ToT 89 50 sa Vdc | Meee” PET: [ste [I -7.0 Vde 2 Vi 2 -20 Vae -8.0 Vde 2 V; 2 -20 Vde Pieces ATS Ls [sO Ty = +25°C, 1.0 mA $ I$ 100 mA 60 1.0 mA $ Io 5 40 mA 30 PEeeamee be [ete | I ~ 7.0 Vdc 2 Vi 2 -20 Ve, 1.0mA $ IoS 40 mA +51 Vi= +10 Vde, 1.0mA $ Io $ 70 mA 25.1 Taput Bias Current (T= +25°C) 6.0 =+125°C) 3.5 a la |" | = 8.0 Vde 2 Vj; 2-20 Vde 1.0 mA $ Ip $ 40 mA Puromieace TT I lo = 40 mA, T= +25°C 2-23

LM79L00 Series 3-Terminal Negative Semiconductor Output Voltage Regulators M79) Series ELECTRICAL CHARACTERISTICS (Vi2-19V, lo = 40 mA, C= 0.33 uF, Co* 0.1 pF, O° <7; < 125ec unless otherwise noted.) Fe me] vas [Ouput Voltage (T= +25) | Vo 1224 | Vee Line Regulation (T; = +25%) REGline mV

14.5 Vde 2 Vz 2 -27 Vde 250

-16 Vdc 2 V;2 -27 Ve 200 Load Regulation REGioad mV Ty = +25°C, 1.0 mA S Io 100 mA 100 1.0 mA $IoS 40 mA 50 ‘Output Voltage Vo | 2 | Vdc -14.5 Vac 2 V; 2 -27 Vdc, LOMA $ Ip $ 40 mA 11.66 +1234 Vi=-19 Vdc, 1.0mA $ Ip $ 70 mA 11.66 212.34 Tnput Bias Current mA (= +25) n+ 125%) Trput Bias Current Change mA = 16 Vide 2 V;2 -27 Vde 1.0 mA $ I $40 mA pe t= [| POET wer uomnewey | = | @ Te [= 1? | (C15 2 Vyz -25 Ve, f= 120 Hz, T)= 25%) Pritiee ——ee p= 40 mA, T= + 25 M79L15 Series ELECTRICAL CHARACTERISTICS (Vi=-23V, I5= 40 mA, Cr= 0.33 HF, Co= 0.1 HF, 0% < T; <125tcunless otherwise noted.) rr ee ee [Min [typ [Max | [Ourput Voliage(T=+25e) Vg S53 Vde -17.5 Vac 2 V; 2 -30 Vde 300 -20 Vac 2 Vi 2 -30 Vac 250 Vice TP Te Te FP Tr=+ 25%, LOMA $ Ip $ 100 mA 150 1.0 mA $ Ip $40 mA 15 ‘Output Voltage Vo Vie -17.5 Vde 2 V;2 +30 Vdc, 1.0mA $ Ip$ 40 mA - 14.25 i: | “15.75 Vi= -23 Ve, 1.0 mA $ Io $70 mA = 14.28 215.75, Input Bias Current =+125¢ 6.0. Tnput Bias Current Change -20 Vac 2 V; 2 -30 Vide 1.0 mA $ Ip $ 40 mA (y= + 25%, 10 Hz S £5 100 Hh) [Misstecycasveremey | |= | [7 [F_ (18.5 Vde S Vi -28.5 Vdc, f= 120 Hz) Pwtoetnewe ee TT 2-24

LM79L00 Series 3-Terminal Negative Semiconductor Output Voltage Regulators (Vp = -27V, lo = 40 mA, C,= 0.33 pF, Co 0.1 uF, 0% < Ty < 125% unless otherwise noted.) [enumerate aye. gp | om _| [Output Voltage (T= +25) VQ 76a Ts .36 Vee Line Regulation (T;=+ 25%) REGline mV -20.7 Vde 2 V; 2-33 Vde 325

21.4 Vde 2 V; 2 -33 Vde -

-22 Vac 2 V; 2 -33 Vde -

221 Vde 2 V; 2 -33 Vde 275

T,=+25¢, 1.0 mA $ Ip < 100 mA 170 1,0 mA $ Ip 40 mA |= | 85 Output Voltage Vo -20.7 Vde 2 V;2 -33 Vdc, LOmA $ I $40 mA 17.44 - 18,56 -21.4 Vde 2 V; 2-33 Vde, 1.OmA S Ip $40 mA ~ = Vi= +27 Vde, 1.0mA S$ Io S 70 mA 171 = 1.89 Tnput Bias Current mA (T)=+25%) y= + 125%) 7 | " -21 Vdc 2 V; 2-33 Vde 1s -27 Vde 2 V; 2-33 Vde - 1.0 mA S$ Io $ 40 mA On [Marirnvetmmrexsy | = | |e [= [* | (-23 2 Vi 2 -33 Vdc, f= 120 Hz, T; = 25%) Private = = = | [p= 40 mA, Ty=+ 25% 2-25

LM79L00 Series 3-Terminal Negative Semiconductor Output Voltage Regulators (LM79L24 Series ELECTRICAL CHARACTERISTICS. (V2 -33V,, lo = 40 mA, C,= 0.33 HF, Co= 0.1 uF, 0% <T;> 125% unless otherwise noted.) ie — Te ie | | [caarnctntese ptt [i Tg [Output Voltage (T= +25) | CV 23.5224 24.48 | Vide | Line Regulaton (T;=+25%) REGline mV +27 Vde 2 V; 2 -38 Vde 350 = 27.5Vde 2 V; 2-38 Vde - +28 Vde 2 Vi 2 -38 Ve 300 Toad Regulation REGload mV Ty=+25°C, 1.0 mA $ Ip S 100 mA 200 1.0 mA $ Ip $40 mA 100 ‘Output Voltage Vo Vie -27 Vde 2 V; 2 -38 Vdc, LOmA $ Io 40 mA + 23.32 24.68 -28 Vde > V; 2 -38 Vdc, 10mA S Ip 40 mA - - Vi= -33 Vdc, 1.0 mA $ IpS 70 mA =23.32 24.68 Tnput Bias Current mA Cs =+25e) s+ 125 Tuput Bias Current Change ale mA -28 Vde 2 V; 2 -38 Vde 1.0 mA $ Io $40 mA (Ta = + 251, 10 Hz $f < 100 kis) “ts sis) vl: [* (-29 S Vi = 35 Vado, f= 120 Hy, T= 25%) o= 40 mA, T= +25 APPLICATIONS INFORMATION Design Considerations The LM79L00 Series of fixed voltage regulators are wire lengths, or if the output load capacitance is large. designed with Thermal Overload Protection that shuts down ‘An input bypass capacitor should be selected to provide the circuit when subjected to an excessive power overload good high-frequency characteristics to insure stable condition, Internal Short-Circuit Protection that limits the operation under all load conditions. A 0.33 pF or larger maximum current the circuit will pass. tantalum, mylar, or other capacitor having low internal In many low current applications, compensation impedance at high frequencies should be used to minimize capacitors are not required. However, it is recommended ‘ground loops and lead resistance drops since the regulator that the regulator input be bypassed with a capacitor if the has no external sense lead. Bypassing the output is also regulator is connected to the power supply filter with long recommended. FIGURE | - POSITIVE AND NEGATIVE REGULATOR FIGURE 2-STANDARD APPLICATION Teel lnputero o7— Output ci - osmr: t 0.18e oct 1 ce Loh mrt = ae ‘Acoxan grosod is required batween the input un the output voltages. The input vokage must remain typically 2.0 V above the output voltage even ossur t diving the low pois on the input ripple voltage. ‘= Cy iroquired ifregulator i located an appreciable ditance = ‘fom power supply filer. ** = Co improves sabily and transient response. SSeS 2-26

LLM79L00 Series 3-Terminal Negative Semiconductor Output Voltage Regulators FIGURE 3-DROPOUT CHARACTERISTICS FIGURE 4-DROPOUT VOLTAGE versus JUNCTION TEMPERATURE 2 78 [ude TTT TT TT 2 CTT TTT tT @ Iees— ELLE £ aso [ee 3 sop tinste Fa SET a be WSS = = 22 FR eee 2 of 1 [7 eve TT es | ee ed A Peete 5 ol [Letom 7 Recicom | a ee ee | gS og sree ae 3 i 1 z ee | s [TT T7ATT TTT 2 .~obprerrr rrr) VtINPUT VOLTAGE(VOLTS) id ‘D JUNCTION TEMPERATURE(°C) FIGURE S-INPUT BIAS CURRENT versus FIGURE 6-INPUT BIAS CURRENT versus AMBIENT TEMPERATURE INPUT VOLTAGE ge 50 a 5g a a a 5 is So i =“ a ee eee ee eS ER SS 3 + La +++ ES E30 | a ee oe 3 [CTD artis z,,--, >), 7 Pree a oe | Vou~5.0V r_] a a SS SE 3g 2° To=40mA 5 32 Pursue Pf td ee | Oc 2 Viw=10V a 5 i__l rf. | Eo pscsov ss a S| = ol] a 5 99 ween, eee a a a 2 Co “so sie 218 20 -asw8O 0 T: AMBIENT TEMPERATURE(°C) Ye INPUT VOLTAGE(VOLTS) . FIGURE 7-MAXIMUM AVERAGE POWER DISSIPATION versus AMBIENT TEMPERATURE -TO-92 Type Package ae SS

40 See SSeS

= SSSSSSS_S_S—_S a a ) es SN SS ‘Ts. AMBIENT TEMPERATURE(*C) a 2-27