Mm 7929237 0022888 2 me 1-S8-11-13 { 7,7 9GS-THOMSON L7800AB/AC Jf wicRosLectRONIcS SERIES S G S-THOMSON JOE D PRECISION 1A REGULATORS a OUTPUT CURRENT IN EXCESS OF 1A a OUTPUT VOLTAGES OF 5; 6; 8; 12; 15; 18; 24V a THERMAL OVERLOAD PROTECTION a SHORT CIRCUIT PROTECTION a OUTPUT TRANSISTOR SOA PROTECTION u 2% OUTPUT VOLTAGE TOLERANCE ma GUARANTEED IN EXTENDED TEMPERA- TURE RANGES DESCRIPTION The L7800A series of three-terminal positive regu- lators is available in TO-220 and TO-3 packages and with several fixed output voltages, making it useful in a wide range of applications. These regu- lators can provide local on-card regulation, elimina- ting the distribution problems associated with single point regulation. Each type employs internal current limiting, thermal shut-down and safe area protec- tion, making it essentially indestructible. If adequate heat sinking is provided, they can deliver over 1A output current. Although designed primarily as fixed voltage regulators, these devices can be used with TO-220 external components to obtain adjustable voltages and currents. : TO-3 ' BLOCK DIAGRAM INPUT SERIES OUTPUT 10 PASS 2 ELEMENT CURRENT SOA GENERATOR PROTECTION | STARTING REFERENCE ERROR CIRCUIT VOLTAGE AMPLIFIER THERMAL (] PROTECTION | GND O3 $-2564 March 1989 . 1/11 295 f Fa5e-71-79 ] im 7929237 0022689 4 mm T-58-T1-13 L7800AB/AC SERIES entre - a iS G S-THOMSON SOE Di ran ABSOLUTE MAXIMUM RATINGS 7 o Symbol! Parameter Value Unit Vi DC Input Voltage (for Vo = 5 to 18V) 35 Vv ; (for Vo = 24V) 40 Vv lo Output Current, Internally limited Prot Power Dissipation . Internally limited Tj Operating Junction Temperature for L7800AC 0 to 125 C for L7800AB 40 to 125 C Tstg | Storage Temperature 65 to + 150 6 THERMAL DATA oe Symbol! Parameter TO-220 TO-3 Unit cos Rin j-case} Thermal Resistance Junction-case Max 3 4 C/W < Rihj-amb | Thermal Resistance Junction-ambient Max 50 35 C/W CONNECTION DIAGRAM AND ORDERING NUMBERS (top view) OUTPUT OUTPUT ~ GROUND . : . GND INPUT INPUT S- 256913 S- 2568/1 : . Ordering Numbers T; =~ 40 to 125C T) = 0 to 125C Output Voltage an TO-220 TO-220 TO-3 as L7805ABV L7805ACV L7805ACT 5V . L7806ABV L7806ACV L7806ACT 6V L7808ABV L7808ACV L7808ACT 8V L7812ABV L7812ACV L7812ACT 12V L7815ABV L7815ACV L7815ACT 15V L7818ABV L7818ACV L7818ACT 18V L7824ABV L7824ACV L7824ACT 24v TYPICAL APPLICATION t 2. +V; . Vo 4) @ 3 [o-33H forme wie, |= S- 4965 MICROELECTRONICS ani Ky S&S-THOMSON 296me 7929237 0022890 0 T-58-11-13 L7800AB/AC SERIES SCHEMATIC DIAGRAM SG S-THONSON JOE D + O IN [ps R18 R68 Rd " ab ag D2 016 Q12 Qi? R12 RS R17 Rit OouT R6 R20 Ao: | |r? [ Jao $-4956 and TEST CIRCUITS Figure 1 : DC Parameters. Figure 2 : Load Regulation. oO 1 1 | O L Vi Ci 3 Vo a Vo 0.33 uF Aur! 0.33F _ a ual sa . am $-6038 oO Figure 3 : Ripple Rejection. 5In 1 2 i Vi 3 Ri Vo eater oO O 470uF 5-6060 {20Hz . 3/11 S&T scs THOMSON 2977929237 0022891 2 mg T~S8-11-13 L7800AB/AC SERIES ~ | is G S-THOMSON 3OE D. ELECTRICAL CHARACTERISTICS L7805A (V; = 10V, I, = 1A, T; = 0 to 125C (L7805AC), Tj = 40 to 125C (L7805AB) unless otherwise specified) Symbol Parameter Test Conditions Min, Typ. Max. Unit a Vo Output Voltage = 25C 4.9 5 5.1 V 7 Vo Output Voitage lo = 5MA to 1A, Po < 15W 4.8 5 5.2 V Los Vi =7.5 to 20V _AV_* | Line Regulation Vi = 7.5 to 25V, lp = 500mMA 7 50 mV Vi =8 to 12V 10 50 mV Vi = 8 to 12V, Ty = 25C 2 25 mv 2 Vi = 7.3 to 20V, Tj = 25C 7 50 mV AV,* | Load Regulation lo = BMA to 1A 25 100 mV Io = 5mA to 1.5A, Ty = 26C 25 100 mV Ip = 250 to 750mA 8 50 mv . la Quiescent Current Ty = 25C 43 |. 6 mA . 6 mA Alg Quiescent Current Change Vi = 8 to 25V, Ip = 500mMA 0.8 mA Vi = 7.5 to 20V, Ty = 25C 0.8 mA lo = 5MA to 1A 0.5 mA SVR_ i Supply Voltage Rejection Vi =8 to 18V, f = 120Hz 68 dB lo = 500mMA Va Dropout Voltage lo =1A Ty = 25C - 2 V en Output Noise Voltage f = 10Hz to 100KHz, T) = 25C 10 LV/Vo Ro Output Resistance f = iKHz 17 mQ es Iso Short Circuit Current Tamb = 25C Vi =35V 0.2 A Iscp Short Circuit Peak Current Tj = 25C 2.2 A AVo | Output Voltage Drift -14 mv/"C AT * 4/11 298 Load and line regulation are specified at constant Junction temperature. Changes In Vo due to heating effects must be taken Into account sepa rately. Pulse testing with low duty cycle is is used, _ Ay segstuomson8 a * T-58~11-13 mm Pees? O0eese + mE 7800AB/AC SERIES S G S-THOMSON JOE D ELECTRICAL CHARACTERISTICS L7806A (V; = 11V, |, = 1A, Tj = 0 to 125C (L7806AC), T; = 40 to 125C (L7806AB) ; unless otherwise specified) Symbol Parameter Test Conditions Nin. Typ. Max. Unit Vo Output Voltage Tj = 25C 5.88 6 6.12 Vv Vo . Output Voltage lp = 5mA to 1A, Po s 15W 5.76 6 6.24 Vv . Vi = 8.6 to 21V AV ,* Line Regulation Vi = 8.6 to 25V, ly = 500MA 9 60 mv Vi =9 to 13V 1 60 mV Vi =9 to 13V, Tj = 25C 3 30 mV Vi =8.3 to 21V, Tj = 25C 9 60 mV AVo* Load Regulation . lo = 5mA to 1A 43 100 mV . I, =5mA to 1.5A, Tj = 25C 43 100 mV |, = 250 to 750mA 16 50 mV lg Quiescent Current Tj = 25C 43 6 mA 6 mA Ala Quiescent Current Change Vi =9 to 25V, |p = 500mA 0.8 mA : Vi = 8.6 to 21V, Tj = 25C 0.8 mA [5 = 5mA to 1A . 0.5 mA SVR Supply Voltage Rejection Vi =9 to 19V, f = 120Hz 65 dB Ip = 500mA Va Dropout Voltage lo = 1A Tj = 25C 2 Vv en Output Noise Voltage Tj = 25C, f = 10Hz to 100KHz 10 ELVIN Ro Output Resistance f = 1KHz 17 maQ Isc Short Circuit Current Tamb = 25C Vi =35V 0.2 A Isep Short Circuit Peak Current Tj, = 25C 2.2 A AVo Output Voltage Drift - 0.8 mvc AT Load and line regulation are specified at constant junction temperature. Changes in Vo due to heating effects must be taken into account sepa- rately, Pulse testing with low duty cycle is used. 5/11 A97 Sts 299| 893 b L7800AB/AC SERIES |_| eeqes? ates 43 V. 1B = (S6 S-THOMSON! T>58-H-T3 "ane pT ELECTRICAL CHARACTERISTICS L7808A (V, = 14V, |, = 1A, T= 0 to 125C (L7808AC), T; = 40 to 125C (L7808AB), uniess otherwise specified) : Symbol _ Parameter Test Conditions Min. Typ. Max. Unit Vo Output Voltage Tj =26C 7.84 8 8.16 Vv Vo Output Voltage lo = SMA to 1A, Po <= 15W 77 8 8.3 Vv ; Vi = 10.6 to 23V AV,* | Line Regulation Vi = 10.6 to 25V, Ip = 500mMA 12 80 mV Vi=11 to 17V 15 80 mV Vi = 11 to 17V, Tj = 25C 5 40 mV Vi = 10.4 to 23V, Tj = 25C 12 80 mV AV,* -| Load-Regulation lop = 5mA to 1A 45 100 mV |p = 5mA to 1.5A, Ty = 26C 45 100 mV : Io = 250 to 750mA 16 50. mV la Quiescent Current Tj = 25C 4.3 6 mA 6 mA Alg Quiescent Current Change Vi =11 to 25V, Ip = 500mA 0.8 mA Vi = 10.6 to 23V, Ty = 25C 0.8 mA lo = 5mA to 1A 0.5 mA SVR_ | Supply Voltage Rejection Vi = 11.5 to 21.5V, f = 120Hz 62 dB lo = 500MA Va Dropout Voltage lo = 1A Tj = 25C 2 Vv en Output Noise Voltage Ty = 25C, f = 10Hz to 100KHz 10 UWNo Ro Output Resistance f = 1KHz. 18 maQ Isc Short Circuit Current Tamb = 25C Vj =35V 0.2 A Isop Short Circuit Peak Current = 25C 2.2 A AVo Output Voltage Drift - 0.8 mv/C. AT . * Load and line regulation are specified at constant junction temperature. Changes In Vo due to heating effects must be taken Into account sepa- tately. Pulse testing with low duty cycle Is used. ett , . ky7 SGS THOMSON 300ms 7929237 0022894 8 me T-58-11-13 S G S-THOMSON, ELECTRICAL CHARACTERISTICS L7812A (Vj = 19V, |p = 1A, Tj = 0 to 125C (L7812AC), Tj = 40 to 125C (L7812AB), unless otherwise specified) L7800AB/AC SERIES 30E D Symbol Parameter Test Conditions Min. Typ. Max. Unit Vo Output Voltage Tj = 25C 11.75 12 12.25 Vv Vo Output Voltage lo = 5mA to 1A, Po < 15W 11.5 12 12.5 Vv Vi = 14.8 to 27V AV,* Line Regulation V, = 14.8 to 30V, |, = 500mMA 13 120 mV Vi = 16 to 22V 16 120 mV V, = 16 to 22V, Tj = 25C 6 60 mV V; = 14.5 to 27V, Tj = 25C 13 120 mV AVo* | Load Regulation 15 = 5mA to 1A 46 100 mV lo = 5mA to 1.5A, Tj = 25C 46 100 - mV 1, = 250 to 750mMA 17 50 mV ld Quiescent Current T; = 25C 4.4 6 mA 6 mA Ala Quiescent Current Change Vr = 15 to 30V, Ip = 500mA 0.8 mA Vi = 14.8 to 27V, Tj = 25C 0.8 mA lo = 5MA to 1A 0.5 mA SVR Supply Voltage Rejection V; = 15 to 25V, f = 120Hz 60 dB 1, = 500mA Va Dropout Voltage 1, = 1A Tj = 25C 2 Vv ON Output Noise Voltage Tj = 25C, f = 10Hz to 100KHz 10 pVNVo Ro Output Resistance f = 1KHz 18 mQ Ise Short Circuit Current Tamb = 25C ~V; =35V 0.2 A Iscp Short Circuit Peak Current Tj = 25C 2.2 A \ AVo | Output Voltage Drift -4 mVPGC : AT * Load and line regulation are specified at constant junction temperature. Changes in Vo due to heating effects must be taken into account sepa- rately. Pulse testing with low duty cycle is used. 7A Ky7 S&SsTHOMSON 301L7800AB/AC SERIES $ G S~THOMSON ELECTRICAL CHARACTERISTICS L7815A (V = 23V, ly = 1A, T, = 010 126C (L7818AC), me 7929237 0022895 T mm 1~58-11-13 JOE D; ; Tj = ~ 40 to 125C (L7815AB), unless otherwise specified) " wo Symbol Parameter Test Conditions Min, Typ. Max. Unit os Vo Output Voltage Tj = 25C 14,7 15 15.3 Vv Ct Vo Output Voltage lo = SMA to 1A, Po < 15W 14.4 15 15.6 Vv a Vi = 17.9 to 30V a AV,* | Line Regulation Vi = 17.9 to 30V, Ip = 500MA 13 450 mV : Vi = 20 to 26V 16 150 mV 7 Vi = 20 to 26V, T; = 25C 6 75 | mv Vi = 17.5 to 30V, Tj = 25C 13 150 mV AV,* | Load Regulation lo =5mA to 1A 52 100 mV lp = 5MA to 1.5A, Tj = 25C 52 100 mV . Ip = 250 to 750mA 20 50 mV : lg Quiescent Current = 25C 44 6 mA 6 mA Alg Quiescent Current Change Vi = 17.5 to 30V, Ip = 500mA 0.8 mA Vi = 17.5 to 30V, T; = 25C 0.8 mA 7 lo = 5mMA to 1A 0.5 mA SVR Supply Voltage Rejection Vi = 18.5 to 28,.5V, f = 120Hz 58 dB 1p = 500mA. * Va Dropout Voltage 1h = 1A Tj = 25C 2 Vv en Output Noise Voltage T; = 25C, f = 10Hz to 100KHz 10 LVN Ro Output Resistance f = 1KHz 19 mQ Iso Short Circuit Current Tamb = 25C Vi =35V 0.2 A 7 Iscp Short Circuit Peak Current Tj = 25C 2.2 A - AVo | Output Voltage Drift -4 mVPC . AT hy 3 SGS-THOMSON Load and line regulation are specified at constant junction temperature. Changes in Vo due to heating effects must be taken into account sepa- rately. Pulse testing with low duty cycle is used. MIGROELECTRONE: -7-58-11-13 - L7800AB/AC SERIES Me 75e%e3? O0Oeedtb 1 ~~" G S=-THOMSON 30E D ELECTRICAL CHARACTERISTICS L7818A (Vj = 27V, I, = 1A, Tj = 0 to 125C (L7818AC), Tj = 40 to 125C (L7818AB), unless otherwise specified) Symbol Parameter Test Conditions Min. Typ. Max. Unit Vo Output Voltage Tj = 25C 17.64 18 18.36 v Vo Output Voltage lp = 5mA to 1A, Po < 15W 17.3 18 18.7 Vv Vi = 21 to 33V AV,* Line Regulation Vi = 21 to 33V, |p = 500mMA 25 180 mV Vi = 24 to 30V 28 180 mV Vi = 24 to 30V, T; = 25C 10 90 mV ; Vi = 20.6 to 33V, Tj = 25C 25 180 mV AV,* | Load Regulation Io = 5mA to 1A 55 400 mV lo = 5mMA to 1.5A, Tj = 25C 55 400 mV lo = 250 to 750mA 22 50 mV la Quiescent Current Tj = 25C 4.5 6 mA 6 mA Ala Quiescent Current Change Vi =21 to 33V, [5 =500mA 0.8 mA Vi = 21 to 33V, Tj = 25C 0.8 mA 1, =5mA to 1A 0.5 mA SVR Supply Voltage Rejection Vi = 22 to 32V, f = 120Hz 57 dB 1, = 500mMA Va Dropout Voltage 1, =1A Tj = 25C 2 Vv en Output Noise Voltage T; = 25C, f = 10Hz to 100KHz 10 LV/Vo Ro Output Resistance f = 1KHz 19 mQ Ise Short Circuit Current Tamp = 25C ~V; =35V 0.2 A Iscp Short Circult Peak Current T; = 25C 2.2 A AVo Output Voltage Drift -1 mvrG AT Load and line regulation ate specified at constant junction temperature. Changes in Vo due to heating effects must be taken into account sepa- rately. Pulse testing with low duty cycle is used. Ky7 S&S-THOMson ot 308me 7929237 0022097 3 mmf T-58-1I-19 | L7800AB/AC SERIES = = . " : S.G S-THOMSON 2 JOE Dd ; ELECTRICAL CHARACTERISTICS L7824A (V, = 33V, |, = 1A, T; = 0 to 125C (L7824AC), aa Tj = 40 to 125C (L7824AB), unless otherwise. specified) ; Symbol Parameter Test Conditions Min. | Typ. | Max. | Unit. Vo Output Voltage Tj = 25C 23.5 24 24.5 Vv Vo Output Voltage | Ip =5mA to 1A, Py s 15W 23 24 25 V V, = 27.3 to 38V AVo* | Line Regulation V; =27 to 38V, Io = 500mA 31 240 mV Vi = 30 to 36V 35 240 mV V; = 30 to 36V, Tj = 25C , 14 120 mV Vi = 26.7 to 38V, Tj = 25C 31 _ 240 mV " AV,* | Load Regulation 1p =5mA to 1A 60 100 mV ; . | Ip = 5mA to 1.5A, Tj = 25C 60 100 mV Ip = 250 to 750mA 25 50 mV FI Quiescent Current Ty = 25C | 46 6 mA 6 mA Ala Quiescent Current Change Vi = 27.3 to 88V, |, = 500mMA 0.8 mA V| = 27.3 to 38V, Ty = 25C 0.8 mA lo = SMA to 1A 0.5 mA SVR Supply Voltage Rejection Vi = 28 to 38V, f = 120Hz 54 dB lp = 500mA Va Dropout Voltage | lo = 1A T) = 25C . 2 V en Output Noise Voltage Tj = 25C, f = 10Hz to 100KHz 10 LVN Roe Output Resistance | f = 1KHz . 20 ma Isc Short Circuit Current Tamb = 25C V, =85V 0.2 : _A \sop Short Circuit Peak Current Tj = 25C 2.2 A AVo | Output Voltage Drift - 15 mvc AT : : * Load and line regulation are specified at constant junction temperature, Changes in Vo due to heating effects must be taken Into account sepa: rately, Pulse testing with low duty cycle Is used. 10/14 : STA SES THOMSON 304_M@ 7929237 0022899 5 7S G S=THOMSON APPLICATIONS INFORMATION DESIGN CONSIDERATIONS The L7800A Series of fixed voltage regulators are designed with Thermal Overload Protection that shuts down the circuit when subjected to an exces- sive power overload condition, Internal Short-circuit Protection that limits the maximum current the cir- cuit will pass, and Output Transistor Safe-Area Compensation that reduces the output short-circuit current as the voltage across the pass transistor is increased. In many low current applications, compensation ca- pacitors are not required. However, it is recommen- ded that the regulator input be bypassed with a Figure 4 : Current Regulator. L7800AB/AC SERIES 30E D T-58~] 1~73 capacitor if the regulator is connected to the power supply filter with long wire lengths, or if the output load capacitance is large. An input bypass capaci- tor should be selected to provide good high-frequen- cy characteristics to insure stable operation under allload conditions. A0.33uF or larger tantalum, my- lar, or other capacitor having low internal impedance at high frequencies should be chosen. The bypass capacitor should be mounted with the shortest pos- sible leads directly across the regulators input ter- minals. Normally good construction techniques should be used to minimize ground loops and lead resistance drops since the regulator has no exter- nal sense lead. Figure 5 : Adjustable Output Regulator. vi low WX ay O= Ri ld Figure 6 : Current Boost Regulator. +O ! 2 ro", | WU as Bou uF aur 2 Vo, 7.0V to 20V Vi- Vo 2 2.0V The addition of an operational amplifier allows ad- justment to higher or intermediate values while re- taining regulation characteristics. The minimum voltage obtainable with this arrangement is 2.0V greater than the regulator voltage. Figure 7 : Short-circuit Protection. +0 Qi 80536 a a > Vy . Joy At 1 2 a2 OV, RL an | > Go i 2 OV, IRE 3 To 30 . 3 _ 0.33pF ia ay en [eer Oar S-6046 $-6063 Veeas The circuit of figure 6 can be modified to provide Ri= Io supply protection against short circuit by adding a IReg- tL short-circuit sense resistor, Rec, and an additional Bai PNP transistor. The current sensing PNP must be VeEQ; able to handle the short-circuit current of the three- lo = IREG + Bay [IREG Ri ] terminal regulator. Therefore, a four-ampere plastic : power transistor is specified. Ky S&S:THOMsON wi MICROELECTRONICS 305