977 LINEAR INTEGRATED CIRCUITS FORMERLY SN52105, SN72305, $N72305A, SN72376 @ Low Standby Current ...0.8 mA Typ TYPES LM105, LM205, LM305, LM305A, LM376 POSITIVE-VOLTAGE REGULATORS BULLETIN NO. DL-S 12057, SEPTEMBER 1973-REVISED JUNE 1976 LM105...JG LM205, LM305, LM305A, LM376 ...JG OR P DUAL-IN-LINE PACKAGE (TOP VIEW) e Adjustable Output Voltage e Load Regulation .. . 0.1% Max (LM105, LM205, LM305) e Input Regulation .. . 0.06%/V Max Designed to be Interchangeable with National LM105, LM205, LM305, LM305A, and LM376 Respectively description AEGU- COMP; REF LATED SHUT. FEED- BY- OUTPUT DOWN BACK PASS suT 6S rye ayy 4 CUR. BOOST-UNREG GND RENT ER INPUT Liat OUT. The LM105, (M205, LM305, LM305A and LM376 are monolithic positive-voltage regulators designed for a wide range of applications from digital power LM105, LM205, LM305, LM305A, LM376...1 PLUG-IN PACKAGE (TOP VIEW) supplies to precision regulators for analog systems. These devices will not oscillate under conditions of varying resistive and reactive loads and will start reliably with any load within the rating of the circuits. The LM105 is characterized for operation over the full military temperature range of 55C to 125C; the LM205 is characterized for operation from 25C to 85C, and the LM305, LM305A, and M376 are characterized for operation from OC to 70C. REGULATED OUTPUT CURRENT LIMIT. GND PIN 41S IN ELECTRICAL CONTACT WITH THE CASE schematic UNREGULATED. INPUT Component values shown are nominal. Resistor values ara in ohms. OUTPUT CURRENT LIMIT REGULATED OUTPUT _ COMPENSATION SHUTDOWN FEEDBACK BYPASS TEXAS INSTRU NCORPORATE POST OFFICE BOX 5012 + DALLA: Copyright 1976 by Texas Instruments Incorporated MENTS S$, TEXAS 7$222 91TYPES LM105, LM205, LM305, LM305A, LM376 POSITIVE-VOLTAGE REGULATORS absolute maximum ratings over operating free-air temperature range (unless otherwise noted} LM305S LM105 LM205 LM305A LM376 UNIT Input voltage (see Note 1} 50 50 50 40 Vv Input-to-output voltage differential 40 40 40 40 v Continuous total dissipation at (or below) 800 800 00 B00 w 25C free-air temperature (see Note 2) m Operating free-air temperature range 55 to 125 25 to 85 Oto 70 Oto 70 c Storage temperature range 66 ta 150 65 to 150 65 to 150 65 to 150 c Lead temperature 1/16 inch from case 300 300 300 300 c for 60 seconds: JG or L package Lead temperature 1/16 inch from case pe 260 260 260 c for 10 seconds: P package NOTES: 1. Voltage values, except input-to-output voltage differential, are with respect to network ground terminal, 2. For operation above 28C free-air temperature, refer to Dissipation Derating Curves, Figures |, Ii, and 1V, page 90. This rating for the L package requires a heat sink that provides a thermal resistance from case to free-air, Rgaca, of not more than 105 C/W. recommended operating conditions LM105 M205 LM305A LM305 LM376 UNIT MIN MAX MIN MAX MIN MAX MIN MAX MIN MAX Input voltage, V) 8.5 so 8.5 50 8.5 50 8.5 40 9 40 v Output voltage, VO 4.5 40 4.5 40 4.5 40 45 30 5 37 Vv Input-to-output voltage 3 30 3 30 3 30 3 30 3 30 v differential, Vi-VO Output current, Io 0 12 0 12 0 45 0 12 0 25 mA Operating free-air 65 125 | 28 85 0 70 0 70 0 70 C temperature, TA LM105, LM205, LM305 electrical characteristicst at 25C free-air temperature (unless otherwise noted) PARAMETER TEST CONDITIONS# LM105, LM205 LM306 UNIT MIN TYP MAX] MIN TYP MAX Input regutation VirVo <8V See Note 3 0.028 0.06 0.025 0.06 %IV Vi-Vo >5V 0.015 0.03 0.015 0.03 Ripple sensitivity Cref = 10 uF, f = 120 Hz 0.003 0.01 0.003 0.01 | %/V Rsc = 102, Ta= 25C 0.02 0.05 0.02 0.05 ; Ig = Otolg= 12mA, [ Rgc= 108, Ta = MIN 603 0.1 0.03 01 Output reguiation (see Note 4) See Note 3 Rgc = 108, Ta = MAX 003 01 % Rgc = 152, Ta = MAX 0.03 0.1 Output voltage change Ta = MIN to Ta = 25C 1 1 % with temperature Ta = 25 Cto Ta = MAX 1 1 J Cre = 0 0.005 0.005 Output noise voltage f = 10 Hz to 10 kHz Cref > 0.1 uF 3.002 0002 % Feedback sense voltage 1.63 1.7 1.81 | 1.63 1.7 1.81 Current-limit sense voltage Rsgc= 100, Vo=0, See Note 5 225 300 375 | 225 300 375} mV Standby current i= s0 08 2 mA Vy =40V os 2 ttThese specifications apply for input and output voltages within tha ranges specified under recommended operating conditions and for a divider impedance of 2 k{2 presented to the feedback terminal, unless otherwise noted. teor conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions. NOTES: 3. Input regulation and output regulation are measured using pulse techniques (ty < 10 ys, duty cycle < 5%) to limit changes in average internal dissipation. Output voltage changes due to large changes in internal dissipation must be taken into account separately. 4. Load regulation and output current capacity can be improved by the addition of external transistors. The improvement factor will be approximately equal to the composite current gain of the added transistors. 5. Current-limit sense voltage is measured without an external pass transistor. TEXAS INSTRUMENTS INCORPORATED 92 POST OFFICE BOX 5012 DALLAS. TEXAS 75222TYPES LM105, LM205, LM305, LM305A, [M376 POSITIVE-VOLTAGE REGULATORS LM305A, LM376 electrical characteristicst at 25C free-air temperature (unless otherwise noted) PARAMETER TEST CONDITIONS? LM305A LM376 UNIT MIN TYP MAX |MIN TYP MAX ViI-V9 <5V 0.025 0.06 0.03 Input regulation Vi-Vo>5V See Note 3 0.015 0,03 9.03 | %/V Ta = 0C to 70C 0.1 Rippl sensitivit Croft = 10 uF, f= 120 Hz 0.003 %IV I fe sensitive PP y = 120 Hz 0.1 Rsc=02, Ty = 25C 0.02 0.2 2 . Ig = 0 to lo = MAX, SC A= Q Output regulation (see Note 4) See Note 3 Rsc=08, Ta=0C 0.03 0.4 0.5 % ee Note Rgc=02, Ta=70C 0.03 04 05 Output voltage change Ta =0C to Ta = 25C 1 1 % .with temperature Ta = 25C to Ty = 70C 1 1 - Crez = 0 0.005 Output noise voltage f= 10Hz to 10 kHz % Cref > 0.1 pF 0.002 1.55 1.7 1.85 Feedback sense voltage > > v Ta =0C to Ta = 70C 16 1.7 ~18 Current limit sense voltage Rsc = 102, Vo=0V, See Note 5 225 300 375 300 mv Vv, =50V 0.8 2 Standby current mA Vv, =30V 25 tT These specifications apply for input and output voltages within the ranges specified under recommended operating conditions, and for a divider impedance of 2 kM presented to the feedback terminal, unless otherwise noted. tFor conditions shown as MIN or MAX, use the appropriate value specified under recammended operating conditions. NOTES: 3. Input regulation and output regulation are measured using pulse techniques (ty < 10 us, duty cycle < 5%) to limit changes in average interna! dissipation. Output voltage changes due to large changes in interna! dissipation must be taken into account separately, 4, Load regulation and output current capacity can be improved by the addition of external transistors. The improvement factor will be approximately equal to the composite current gain of the added transistors, 5. Current-limit sense voltage is measured without an external pass transistor. Rsc CURRENT 43 2 BOOSTER LIMIT TIP32 , uTPUT Booster CURRENT Ba REG vo OUTPUT " to < 200 mA vy UNREG OUTPUT REG Qa V0 = 15V INPUT come vie 1Bv. UNREG OUTPUT 9 > REE SHUTDOWN INPUT COMP E5100 FIG7 KAY [7 ]BvPass reepsack REF SHUTDOWN Ae J tye Ty GND a2 BYPASS FEEDBACK }o = GND 22.27 kn | 4 RIFR2 | = Vo* = R2 325 Isc * Rsc FIGURE 1BASIC REGULATOR WITH CURRENT LIMITING FIGURE 2LINEAR REGULATOR WITH FOLOBACK CURRENT LIMITING 77 TEXAS IN STRUMENTS INCORPORATE POST OFFICE BOX 5012 DALLAS, TEXAS 75222 93TYPES 1M105, LM205, LM305, LM305A, LM376 POSITIVE-VOLTAGE REGULATORS vw TYPICAL APPLICATION DATA FIGURE 6SHUNT REGULATOR FIGURE 7-SWITCHING REGULATOR ot uF pV" 28V VorSV 47 pF 3v < 2470 20.16 & CURRENT BOOSTER louTPuT we UNRES OUTPUT Vorsv INPUT COMP Faso $558 SHUTDOWN _]_47 2 ka +] 500 uF, EF Ter wv BYPASS FEEDBACK}-@ = tantalum =| GNO Sais ko FIGURE 310-A REGULATOR WITH FOLDBACK CURRENT LIMITING e vat +4 Tisa4 2N3714 @8n N | leooster SURTNT OUTPUT REG 6800 o20 ANA A 2N3714 Boos T A UNREG OUTPUT ; BoosTER RENT INPUT come 268 2 2N2905A REG snutoown [leg ng Ff v . UNREG OUTPUT {REF AWA INPUT 4 aypass FEEDBACK }-@-~w sauTeee 37k GNO aun 4 ue a _{ReF ATT OF S180 38V TS. BYPASS FEEDBACK | y 2 Ww GND 213ko e loz tA S = = tProtects against input voltage reversal. +Protects against shorted Input or inductive loads on unregulated supply. SProtects against output voltage reversal. FIGURE 4CURRENT REGULATOR FIGURE 51-A REGULATOR WITH PROTECTIVE DIODES ul 1.7mH 1N4728 CURRENT 33 BOOSTER LIMIT TIP32 3 OUTPUT REG 3 BOOSTER CURRENT o 0S: UMIT unREG OUTPUT | | = ouTPUT AEG INPUT COMP} Sez00 | 11.1K2g SHUTDOWN ar pF J 5 ~ virssv + unreg = OUTPUT | E T INPUT come] s6KaS ISYPASS FEEDBACK SHUTDOWN ND > REF s 24422 BYPASS FEEDBACK 250 5 q 20 s* 100 oF GND spunk Vv kone Io 200mA 4 , Vo=10V = = TExaS INSTRUMENTS INCORPORAT POST OFFICE BOX 5012 DALLAS, TEXAS 75222