LINEAR INTEGRATED CIRCUIT

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LNEAR NTEGRATED CRCUT HGH PRECSON HGH VOLTAGE REGULATOR NPUT VOLTAGE UP TO 80V OUTPUT VOLTAGE ADJUSTABLE FROM 2 TO 77V POSTVE OR NEGATVE SUPPLY OPERATON SERES.

1 LNEAR NTEGRATED CRCUT HGH PRECSON HGH VOLTAGE REGULATOR NPUT VOLTAGE UP TO 80V OUTPUT VOLTAGE ADJUSTABLE FROM 2 TO 77V POSTVE OR NEGATVE SUPPLY OPERATON SERES. SHUNT, SWTCHNG OR FLOATNG OPERATON OUTPUT CURRENT UP TO 150 ma WTHOUT EXTERNAL PASS TRANSSTOR ADJUSTABLE CURRENT LMTNG THERMAL PROTECTON The L 146 is a monolithic integrated programmable voltage regulator in 14-lead dual in-line plastic package and 10-lead Metal Can (TO-l00 type). t is made with high voltage technology and provides internal current limiting and thermal shut down protection; when current exceeds 150 ma an external NPN or PNP pass element may be used. Provisions are made for adjustable current limiting and remote shut down. The L 146 is intended to widen the application range of L 123 up to 80V. ABSOLUTE MAXMUM RATNGS V Vi-Vo 10 ref P tot T stg nput voltage Voltage drop Output current Current from V ref Power dissipation (at T amb= 70 C) Plastic DP TO-l00 Operating junction temperature L 146 L146C Storage temperature 80 V 78 V 150 ma 8 ma 1 W 520 mw -25 to + 85 C o to +70 C -65 to C MECHANCAL DATA Dimensions in mm 57 6/82

2 CONNECTON DAGRAMS (top view) NC NC NVERTNG NPUT CURRENT LlM1T CURRENT LMT CURRENT SENSE NVERT NPUT " " FREQUENCY COMP.v, Vc NON NVERTNG 3 NPUT NON~ NVERT NPUT Vre! W V, V, -v, NC Type L146 L146 C TO-100 L 146 T L 146 CT Plastic DP L 146 CB BLOCK DAGRAM NVERT. FREQUENCY NPUT COMPENS. Vc SERES PASS TRANSSTORS <J'Vo NON-NVERT. CURRENT CURRENT Vz NPUT LMT SENSE THERMAL DATA TO-100 Plastic DP Rth j-amb Thermal resistance junction-ambient max 155 C/W 80 C/W 58

3 'N i ~, i SCHEMATC DAGRAM (pin number relative to the plastic package) ~--~ ~ ~ ~ ~------~120 V5 Rl R3 Rll R14 01 Q2 ~~~Q~3--~------~ ~~0~ ~ Q12 R R6 Cl R5 02 R7 R8 L '"O Vz * CURRENT x---c u LM T * ONLY N PLASTC DP NON -NVERT -Vs NPUT NVERT. NPUT LS_ ~3 0 ~~~~~NT TEST CRCUT 12 L146 ",0 Vo 9 V.L CL i RSC 2--~-c:=:J 3 CS :l -0 REGULAT~D + OUTPUT 41n~ ~ ~OPF R35_3666/1 Vi = 12V Vo= 5V 10= 1 ma R 1 //R 2 <; 10 Kn 59

4 ELECTRCAL CHARACTERSTCS (Refer to the test circuit, T arnb = 25 C unless otherwise specified) L146 C L146 Parameter Test conditions Unit Min. Typ. Max. Min. Typ. Max. f,vo Line regulation V i =12to15V Vo V i =12t040V % Vi =40 to 80V /,,vo Load regulation V = 12V Vo=5V 10 = 1 to 50 rna -v;;- Vi =40V Vo = 37V 10 = 1 to 10 rna Vi = 80V Vo = 77V 10 = 1 to 10 ma % % % V ref Reference voltage ref= 160 ~A V A V ref ref= 160 ~A to 5 ma mv SVR Ripple rejection f = 100 Hz to 10 KHz Cref= db Cref= 5 ~F AVo --;:;:=r C Output voltage drift ~ se Short circuit current Rse= 10n Vo=O ma limiting Vi nput voltage range V Vo Output voltage range V V-Vo Voltage drop V d Quiescent drain current 10=0 Vo=5V (including ref= 160 ~A Vi = 12V Vi = 40V ma V = 80V Aid Quiescent drain current 10= 1 ma Vi = 12 to 40V ma change Vo=5V Vi = 12 to 80V ma % Long term.stability TOOo hrs en Output noise voltage BW = 100 Hz to 10 KHz Cref= ~V Cref= 5 ~F V z Output zener voltage z= 1 ma V (for plastic package only) 60

5 Fig. 1 - Maximum output current vs. voltage drop Fig. 2 - Load regulation vs. output current (with current limiting) G-1,34411 Vo=5V... ~ V ='2V Rse'O.n - t-- ~~ 1-- t--,'\~ i \ '\ \, j - ~1'ftl-5S'C t-- \ \- -\;T~mb'ls.c \ Tamb" 125'C BO lo(mal -0.2 Fig. 3 - Load regulation vs. output current (with current limiting) i""o... G-l87~ ~~m Rsc: 1O 1- ~ -..;::r::::: ~::::- ' <ll)')b:o', ;-... m -OJ 70'C ' -f- -f--, -. o i-,~ttt=,0., Fig. 4 - Load regulation vs. output current (without current limiting) F::::::, G-367~ lamb" O'C r::::: ::::-- 25'~ - ""- 20 '0 60 ~ ~ vo (v) Fig. 5 - Current limiting characteristics - Vi,,12V RSC=1O Tamb=70"C 25'0 0' '" lo{.ma} Fig. 6.. Current limiting characteristics vs. junction temperature G-3817 v 1 (V') "'- 7 ~G- + ( rna), 60 "Cy;;; ~"'- t-- Ni~SC"S~ 6 ~, """" t--- i'-, C- ~~Oil... '0 1 --j i C 100 TJ{'C} "0 (mv) Fig. 7 Line transient response NPUT VOLTAGE '/ r--t-~put Vi=12V '2r- Vo"5V i o "lma R~r."O., i '- ltage G-3678!l t(,us) 'V, (V) "0 Fig. 8 - Load transient response (mv ),- LOAD., CURRENT [ 1\ 1 Vj,,12V f-- "'OOSY lo,,40m RSC= 0 \ '-- :--, OUTPUT VOLTAGE V 25 35t{psetl ( -s, 10-~ Fig. 9 - Output impedance vs. frequency 10-2 Y-'-l.-'l.'l'. L-,f-'-l.-'l.'l'. L..-,f-'-l."".'f....,f-'-l-'fj' '0' ' 105 t(hz) ' 61

6 Table -- Resistor values (Kn) for standard output voltage Positive output voltage Fixed output Applicable ± 5% figures R, R2 Negative output voltage Applicable figures Fixed output ± 5% R, R ,13, , ,13,14, 15,18, Table - Formulae for intermediate output voltages Outputs from +2 to +7 volts Fig , 14, 15,18,20 VOUT~ [VREFX R_2 1 R + R2 Outputs from +4 to +250 volts Fig. 16 V REF R2-Rl VOUT~ [ X --R-,---1; R3~ R4 Current Limiting LiMT = _ VSENSE R" Outputs from +7 to +77 volts Fig.ll, 13, 14, 15, 18, 20 Al + R2 VOUT~ [VREFX ~~ Output from -6 to -250 volts Fig. 12, 17 V REF R +R2 VOUT~ [2--X--ff;--1;R3~R4 Foldback Current Limiting KNEE ~ V OUT R3 + ~"'-"~ (R 3 + R41 1 Rsc R4 Rsc R4 VSENSE R3 + R4 SHORT CKT~ [~X ---R-4---J 62

7 APPLCATON C RCUTS (continued) Fig Basic low voltage regulator (V OUT= 2 to 7V) Fig Basic high voltage regulator (V OUT= 7 to 77V) NOTE: R3 ~,-,R-,-l '-,R",2=- Rl + R2 for minimum temperature drift. NOTE: R3 ~--'l~ Rl + R2 for minimum temperature drift. R3 may be eliminated for minimum com~ ponent count. R3 may be eliminated for minimum component count. Line Regulation (en; = 3V)... Load Regulation (Lilo = 50 mal... 5V.0.5 mv.1.5 mv Line Regulation (LiV; = 3V)... Load Regulation (Lilo = 50 mal... 15V..1.5 mv..4.5 mv Fig Negative voltage regulator Fig Positive voltage regulator (External NPN Pass Transistor) ~~,;~~"c, :,,. 6 ~o~:. tv'\ BFXJ9 O "l~ CL ~ 3Kfi, it' L146: c,s_ i r ~ t'" '" '~~'~O'C! LL_i- -".1 _}'6~~~~\CO s-,ldo 'dl SCOpf Line Regulation (LiV; = 3V). Load Regulation (Lilo = 1 A).. +15V. 1.5 mv.15 mv Line Regulation (LiV; = 3V)... Load Regulation (Lilo = 100 mal.. 15V.1 mv.2 mv 63

8 APPLCATON C RCUTS (continued) Fig Positive voltage regulator (External PNP Pass Transistor) Fig Foldback current limiting " i 1''''6'2 R" ~~--+~:65~~C~TED R2 Cre Line Regulation (LlYi = 3V). Load Regulation ("'1 0 = 1 A) V. 0.5 mv.. 5 mv Line Regulation ("'Vi = 3V)... Load Regulation ("'1 0 = 10 mal Current Limit Knee V.0.5 mv.. 1 mv.20 ma Fig Positive floating regulator Fig Negative floating regulator 3:V R KG "t', ~" " : 2 R3 R2 L _ Line Regulation ("'Vi = 20V).. Load Regulation ("'1 0 = 50 mal. +100V.15 mv.20 mv Line Regulation ("'Vi = 20V)... Load Regulation ("'1 0 = 100 mal. -100V.30 mv.20 mv 64

9 APPLCATON CRCUTS (continued) Fig Positive switching regulator Fig Remote shutdown regulator with current limiting 1.2mH p.-e}-'-l::::::f-1-r-+--_~~~g~~ted Line Regulation (6V j = 30V) Load Regulation (610 = 2A) V.10 mv.80ma Line Regulation (6V j = 3V)... Load Regulation (61 0 = 50 mal... 5V.. 0.5V.1.5 mv NOTE: Current limit transistor may be used for shutdown if current limiting is not required. Fig Shunt regulator -0 lco;, " REGUlATED ---"--O~TPUT _ BFY J..; Line Regulation (6V j = 10V) Load Regulation (610 = 1 00 mal.. +5V.2 mv.5mv 65

10 APPLCATON CRCUTS (continued) Fig.21-60V voltage regulator with foldback characteristic Fig V Y, (V ) 6-' , ), V V / (A) R4 Vo -- + V = R...:5';:- Rsc R. (1+~; V 2-3 ~ O.7V Fig Motor speed control ~.=~-~ ~ ~s Vc L Vref N Vs V.F.C. 10~vo~-+1C M = BK LENCO 0.22nF 2.2Kil 1'" M A: 3000 RPM B : 4000 RPM

11 APPLCATON C RCU TS (continued) Fig.24-Step-down switching regulator for 12V car radio Vi --- L 146 S 6 5 VrE'f 1KQ 680Kl L..7Kl 10 Vo loon _1...~ij" Vo =13,5V Performance: Output voltage Max output current. nput voltage range. Line regulation. Load regulation. Ripple.... Efficiency.... Switching frequency V.... 3A.20 to 30V 50 db 0 0= 2A) t,vj= 10V 0.1%(1',10= 3A) mvpp.75% 0 0 = 3A) KHz R2 6.BKll R1 S /3 Fig W motor speed regulator with tacho adjustment and speed change-over switch o~~~ ~..J L 'vo"---_~,,, ~ S - t..1 BS1 NOTE - For a more detailed description of the L 146 and its applications, refer to SGS TECHNCAL NOTE TN

LM723 HIGH PRECISION VOLTAGE REGULATOR

LM723 HIGH PRECISION VOLTAGE REGULATOR HIGH PRECISION VOLTAGE REGULATOR INPUT VOLTAGE UP TO 40V OUTPUT VOLTAGE ADJUSTABLE FROM 2 TO 37V POSITIVE OR NEGATIVE SUPPLY OPERATION SERIES, SHUNT, SWITCHING OR FLOATING OPERATION OUTPUT CURRENT TO 150mA