L7800AB/AC SERIES PRECISION 1A REGULATORS .. .. .. . OUTPUT CURRENT IN EXCESS OF 1A OUTPUT VOLTAGES OF 5; 6; 8; 9; 12; 15; 18; 24V THERMAL OVERLOAD PROTECTION SHORT CIRCUIT PROTECTION OUTPUT TRANSISTOR SOA PROTECTION 2% OUTPUT VOLTAGE TOLERANCE GUARANTEED IN EXTENDED TEMPERATURE RANGES DESCRIPTION The L7800A series of three-terminal positive regulators 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 regulators can provide local on-card regulation, eliminating the distribution problems associated with single point regulation. Each type employs internal current limiting, thermal shut-down and safe area protection, 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 external components to obtain adjustable voltages and currents. TO-220 BLOCK DIAGRAM January 1993 1/14 L7800AB/AC SERIES ABSOLUTE MAXIMUM RATINGS Symbol Parameter Value Unit 35 40 V V Vi DC Input Voltage (for V o = 5 to 18V) (for V o = 24V) Io Output Current Internally limited Power Dissipation Internally limited Pt o t Tj T stg Operating Junction Temperature for L7800AC for L7800AB Storage Temperature 0 to 125 – 40 to 125 °C °C – 65 to + 150 °C THERMAL DATA Symbol Parameter Rthj-case Thermal Resistance Junction-case Rthj-amb Thermal Resistance Junction-ambient Max Max Value 3 50 CONNECTION DIAGRAM AND ORDERING NUMBERS (top view) TO-220 (Tj = -40 to 125 oC) TO-220 (Tj = 0 to 125 oC) Output Voltage L7805ABV L7805ACV 5V L7806ABV L7808ABV L7806ACV L7808ACV 6V 8V L7809ABV L7812ABV L7815ABV L7809ACV L7812ACV L7815ACV 9V 12V 15V L7818ABV L7818ACV 18V L7824ABV L7824ACV 24V TYPICAL APPLICATION 2/14 Unit C/W o C/W o L7800AB/AC SERIES SCHEMATIC DIAGRAM TEST CIRCUITS Figure 1 : DC Parameters. Figure 2 : Load Regulation. Figure 3 : Ripple Rejection. 3/14 L7800AB/AC SERIES ELECTRICAL CHARACTERISTICS FOR L7805A (Vi = 10V, Io = 1 A, Tj = 0 to 125 oC (L7805AC), Tj = -40 to 125 oC (L7805AB) unless otherwise specified) Symbol Parameter Test Conditions o Vo Output Voltage Tj = 25 C Vo Output Voltage Io = 5 mA to 1 A Vi = 7.5 to 20 V ∆Vo* Line Regulation Vi Vi Vi Vi ∆Vo* P o ≤ 15 W = 7.5 to 25 V = 8 to 12 V = 8 to 12 V = 7.3 to 20 V Io = 500 mA Tj = 25 oC Tj = 25 oC Load Regulation Io = 5 mA to 1 A Io = 5 mA to 1.5 A Io = 250 to 750 mA Quiescent Current Tj = 25 oC Quiescent Current Change Vi = 8 to 25 V Io = 500 mA Vi = 7.5 to 20 V Tj = 25 oC Io = 5 mA to 1 A Supply Voltage Rejection Vi = 8 to 18 V Io = 500 mA Vd Dropout Voltage Io = 1 A eN Output Noise Voltage B = 10Hz to 100KHz Ro Output Resistance f = 1KHz Isc Short Circuit Current Vi = 35 V Id ∆Id SVR Iscp Short Circuit Peack Current ∆Vo ∆T Output Voltage Drift o Tj = 25 C Tj = 25 oC f = 120 Hz Tj = 25 oC Tj = 25 oC Tamb = 25 oC Min. Typ. Max. Unit 4.9 5 5.1 V 4.8 5 5.2 V 7 10 2 7 50 5 25 50 mV mV mV mV 25 30 8 100 100 50 mV mV mV 4.3 6 6 mA 0.8 0.8 0.5 mA mA mA 68 dB 2 V 10 µV/Vo 17 mΩ 0.2 A 2.2 A -1.1 mV/oC * 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. 4/14 L7800AB/AC SERIES ELECTRICAL CHARACTERISTICS FOR L7806A (Vi = 11V, Io = 1 A, Tj = 0 to 125 oC (L7806AC), Tj = -40 to 125 oC (L7806AB) unless otherwise specified) Symbol Parameter Test Conditions o Vo Output Voltage Tj = 25 C Vo Output Voltage Io = 5 mA to 1 A Vi = 8.6 to 21 V ∆Vo* Line Regulation Vi Vi Vi Vi ∆Vo* P o ≤ 15 W = 8.6 to 25 V = 9 to 13 V = 9 to 13 V = 8.3 to 21 V Io = 500 mA Tj = 25 oC Tj = 25 oC Load Regulation Io = 5 mA to 1 A Io = 5 mA to 1.5 A Io = 250 to 750 mA Quiescent Current Tj = 25 oC Quiescent Current Change Vi = 9 to 25 V Io = 500 mA Vi = 8.6 to 21 V Tj = 25 oC Io = 5 mA to 1 A Supply Voltage Rejection Vi = 9 to 19 V Io = 500 mA Vd Dropout Voltage Io = 1 A eN Output Noise Voltage B = 10Hz to 100KHz Ro Output Resistance f = 1KHz Isc Short Circuit Current Vi = 35 V Id ∆Id SVR Iscp Short Circuit Peack Current ∆Vo ∆T Output Voltage Drift o Tj = 25 C Tj = 25 oC f = 120 Hz Tj = 25 oC Tj = 25 oC Tamb = 25 oC Min. Typ. Max. Unit 5.88 6 6.12 V 5.76 6 6.24 V 9 11 3 9 60 60 30 60 mV mV mV mV 25 30 10 100 100 50 mV mV mV 4.3 6 6 mA 0.8 0.8 0.5 mA mA mA 65 dB 2 V 10 µV/Vo 17 mΩ 0.2 A 2.2 A -0.8 mV/oC * 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. 5/14 L7800AB/AC SERIES ELECTRICAL CHARACTERISTICS FOR L7808A (Vi = 14V, Io = 1 A, Tj = 0 to 125 oC (L7808AC), Tj = -40 to 125 oC (L7808AB) unless otherwise specified) Symbol Parameter Test Conditions o Vo Output Voltage Tj = 25 C Vo Output Voltage Io = 5 mA to 1 A Vi = 10.6 to 23 V ∆Vo* Line Regulation Vi Vi Vi Vi ∆Vo* = 10.6 to 25 V = 11 to 17 V = 11 to 17 V = 10.4 to 23 V P o ≤ 15 W Io = 500 mA Tj = 25 oC Tj = 25 oC Load Regulation Io = 5 mA to 1 A Io = 5 mA to 1.5 A Io = 250 to 750 mA Quiescent Current Tj = 25 oC Quiescent Current Change Vi = 11 to 25 V Vi = 10.6 to 23 V Io = 5 mA to 1 A Supply Voltage Rejection Vi = 11.5 to 21.5 V Io = 500 mA Vd Dropout Voltage Io = 1 A eN Output Noise Voltage B = 10Hz to 100KHz Ro Output Resistance f = 1KHz Isc Short Circuit Current Vi = 35 V Id ∆Id SVR Iscp Short Circuit Peack Current ∆Vo ∆T Output Voltage Drift o Tj = 25 C Tj = 25 oC Min. Typ. Max. 7.84 8 8.16 V 7.7 8 8.3 V 12 15 5 12 80 80 40 80 mV mV mV mV 25 30 10 100 100 50 mV mV mV 4.3 6 6 mA 0.8 0.8 0.5 mA mA mA Io = 500 mA Tj = 25 oC f = 120 Hz Tj = 25 oC Tj = 25 oC Tamb = 25 oC 62 Unit dB 2 V 10 µV/Vo 18 mΩ 0.2 A 2.2 A -0.8 mV/oC * 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. 6/14 L7800AB/AC SERIES ELECTRICAL CHARACTERISTICS FOR L7809A (Vi = 15V, Io = 1 A, Tj = 0 to 125 oC (L7809AC), Tj = -40 to 125 oC (L7809AB) unless otherwise specified) Symbol Parameter Test Conditions o Vo Output Voltage Tj = 25 C Vo Output Voltage Io = 5 mA to 1 A Vi = 10.6 to 23 V ∆Vo* Line Regulation Vi Vi Vi Vi ∆Vo* = 10.6 to 25 V = 11 to 17 V = 11 to 17 V = 10.4 to 23 V P o ≤ 15 W Io = 500 mA Tj = 25 oC Tj = 25 oC Load Regulation Io = 5 mA to 1 A Io = 5 mA to 1.5 A Io = 250 to 750 mA Quiescent Current Tj = 25 oC Quiescent Current Change Vi = 11 to 25 V Vi = 10.6 to 23 V Io = 5 mA to 1 A Supply Voltage Rejection Vi = 11.5 to 21.5 V Io = 500 mA Vd Dropout Voltage Io = 1 A eN Output Noise Voltage B = 10Hz to 100KHz Ro Output Resistance f = 1KHz Isc Short Circuit Current Vi = 35 V Id ∆Id SVR Iscp Short Circuit Peack Current ∆Vo ∆T Output Voltage Drift o Tj = 25 C Tj = 25 oC Min. Typ. Tj = 25 oC Tj = 25 oC Tamb = 25 oC Unit 8.82 9 9.18 V 8.65 9 9.35 V 12 15 5 12 90 90 45 90 mV mV mV mV 25 30 10 100 100 50 mV mV mV 4.3 6 6 mA 0.8 0.8 0.5 mA mA mA Io = 500 mA Tj = 25 oC f = 120 Hz Max. 61 dB 2 V 10 µV/Vo 18 mΩ 0.2 A 2.2 A -0.8 mV/oC * 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. 7/14 L7800AB/AC SERIES ELECTRICAL CHARACTERISTICS FOR L7812A (Vi = 19V, Io = 1 A, Tj = 0 to 125 oC (L7812AC), Tj = -40 to 125 oC (L7812AB) unless otherwise specified) Symbol Parameter Test Conditions o Vo Output Voltage Tj = 25 C Vo Output Voltage Io = 5 mA to 1 A Vi = 14.8 to 27 V ∆Vo* Line Regulation Vi Vi Vi Vi ∆Vo* = 14.8 to 30 V = 16 to 22 V = 16 to 22 V = 14.5 to 27 V P o ≤ 15 W Io = 500 mA Tj = 25 oC Tj = 25 oC Load Regulation Io = 5 mA to 1 A Io = 5 mA to 1.5 A Io = 250 to 750 mA Quiescent Current Tj = 25 oC Quiescent Current Change Vi = 15 to 30 V Vi = 14.8 to 27 V Io = 5 mA to 1 A Io = 500 mA Tj = 25 oC Supply Voltage Rejection Vi = 15 to 25 V Io = 500 mA f = 120 Hz Vd Dropout Voltage Io = 1 A eN Output Noise Voltage B = 10Hz to 100KHz Ro Output Resistance f = 1KHz Isc Short Circuit Current Vi = 35 V Id ∆Id SVR Iscp Short Circuit Peack Current ∆Vo ∆T Output Voltage Drift o Tj = 25 C Tj = 25 oC Tj = 25 oC Tj = 25 oC Tamb = 25 oC Min. Typ. Max. 11.75 12 12.25 V 11.5 12 12.5 V 13 16 6 13 120 120 60 120 mV mV mV mV 25 30 10 100 100 50 mV mV mV 4.4 6 6 mA 0.8 0.8 0.5 mA mA mA 60 Unit dB 2 V 10 µV/Vo 18 mΩ 0.2 A 2.2 A -1 mV/oC * 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. 8/14 L7800AB/AC SERIES ELECTRICAL CHARACTERISTICS FOR L7815A (Vi = 23V, Io = 1 A, Tj = 0 to 125 oC (L7815AC), Tj = -40 to 125 oC (L7815AB) unless otherwise specified) Symbol Parameter Test Conditions o Vo Output Voltage Tj = 25 C Vo Output Voltage Io = 5 mA to 1 A Vi = 17.9 to 30 V ∆Vo* Line Regulation Vi Vi Vi Vi ∆Vo* = 17.9 to 30 V = 20 to 26 V = 20 to 26 V = 17.5 to 30 V P o ≤ 15 W Io = 500 mA Tj = 25 oC Tj = 25 oC Load Regulation Io = 5 mA to 1 A Io = 5 mA to 1.5 A Io = 250 to 750 mA Quiescent Current Tj = 25 oC Quiescent Current Change Vi = 17.5 to 30 V Vi = 17.5 to 30 V Io = 5 mA to 1 A Supply Voltage Rejection Vi = 18.5 to 28.5 V Io = 500 mA Vd Dropout Voltage Io = 1 A eN Output Noise Voltage B = 10Hz to 100KHz Ro Output Resistance f = 1KHz Isc Short Circuit Current Vi = 35 V Id ∆Id SVR Iscp Short Circuit Peack Current ∆Vo ∆T Output Voltage Drift o Tj = 25 C Tj = 25 oC Min. Typ. Tj = 25 oC Tj = 25 oC Tamb = 25 oC Unit 14.7 15 15.3 V 14.4 15 15.6 V 13 16 6 13 150 150 75 150 mV mV mV mV 25 30 10 100 100 50 mV mV mV 4.4 6 6 mA 0.8 0.8 0.5 mA mA mA Io = 500 mA Tj = 25 oC f = 120 Hz Max. 58 dB 2 V 10 µV/Vo 19 mΩ 0.2 A 2.2 A -1 mV/oC * 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. 9/14 L7800AB/AC SERIES ELECTRICAL CHARACTERISTICS FOR L7818A (Vi = 27V, Io = 1 A, Tj = 0 to 125 oC (L7818AC), Tj = -40 to 125 oC (L7818AB) unless otherwise specified) Symbol Parameter Test Conditions o Vo Output Voltage Tj = 25 C Vo Output Voltage Io = 5 mA to 1 A Vi = 21 to 33 V ∆Vo* Line Regulation Vi Vi Vi Vi ∆Vo* Load Regulation Io = 5 mA to 1 A Io = 5 mA to 1.5 A Io = 250 to 750 mA Quiescent Current Tj = 25 oC Quiescent Current Change Vi = 21 to 33 V Vi = 21 to 33 V Io = 5 mA to 1 A Io = 500 mA Tj = 25 oC Supply Voltage Rejection Vi = 22 to 32 V Io = 500 mA f = 120 Hz Vd Dropout Voltage Io = 1 A eN Output Noise Voltage B = 10Hz to 100KHz Ro Output Resistance f = 1KHz Isc Short Circuit Current Vi = 35 V Id ∆Id SVR Iscp Short Circuit Peack Current ∆Vo ∆T Output Voltage Drift P o ≤ 15 W = 21 to 33 V Io = 500 mA = 24 to 30 V = 24 to 30 V Tj = 25 oC = 20.6 to 33 V Tj = 25 oC o Tj = 25 C Tj = 25 oC Tj = 25 oC Tj = 25 oC Tamb = 25 oC Min. Typ. Max. 17.64 18 18.36 V 17.3 18 18.7 V 25 28 10 5 180 180 90 180 mV mV mV mV 25 30 10 100 100 50 mV mV mV 4.5 6 6 mA 0.8 0.8 0.5 mA mA mA 57 Unit dB 2 V 10 µV/Vo 19 mΩ 0.2 A 2.2 A -1 mV/oC * 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. 10/14 L7800AB/AC SERIES ELECTRICAL CHARACTERISTICS FOR L7824A (Vi = 33V, Io = 1 A, Tj = 0 to 125 oC (L7824AC), Tj = -40 to 125 oC (L7824AB) unless otherwise specified) Symbol Parameter Test Conditions o Vo Output Voltage Tj = 25 C Vo Output Voltage Io = 5 mA to 1 A Vi = 27.3 to 38 V ∆Vo* Line Regulation Vi Vi Vi Vi ∆Vo* Load Regulation Io = 5 mA to 1 A Io = 5 mA to 1.5 A Io = 250 to 750 mA Quiescent Current Tj = 25 oC Quiescent Current Change Vi = 27.3 to 38 V Vi = 27.3 to 38 V Io = 5 mA to 1 A Supply Voltage Rejection Vi = 28 to 38 V Io = 500 mA Vd Dropout Voltage Io = 1 A eN Output Noise Voltage B = 10Hz to 100KHz Ro Output Resistance f = 1KHz Isc Short Circuit Current Vi = 35 V Id ∆Id SVR Iscp Short Circuit Peack Current ∆Vo ∆T Output Voltage Drift P o ≤ 15 W = 27 to 38 V Io = 500 mA = 30 to 36 V = 30 to 36 V Tj = 25 oC = 26.7 to 38 V Tj = 25 oC o Tj = 25 C Tj = 25 oC Min. Typ. Max. 23.5 24 24.5 V 23 24 25 V 31 35 14 31 240 240 120 240 mV mV mV mV 25 30 10 100 100 50 mV mV mV 4.6 6 6 mA 0.8 0.8 0.5 mA mA mA Io = 500 mA Tj = 25 oC f = 120 Hz Tj = 25 oC Tj = 25 oC Tamb = 25 oC 54 Unit dB 2 V 10 µV/Vo 20 mΩ 0.2 A 2.2 A -1.5 mV/oC * 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. 11/14 L7800AB/AC SERIES APPLICATIONS INFORMATION DESIGN CONSIDERATIONS In many low current applications, compensation capacitors are not required. However, it is recommended that the regulator input be bypassed with a 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 capacitor should be selected to provide good high-frequency characteristics to insure stable operation under all load conditions. A 0.33µF or larger tantalum, mylar, or other capacitor having low internal impedance at high frequencies should be chosen. The bypass capacitor should be mounted with the shortest possible leads directly across the regulators input terminals. Normally good construction techniques should be used to minimize ground loops and lead resistance drops since the regulator has no external sense lead. Figure 4 : Current Regulator. Figure 5 : Adjustable Output Regulator. The L7800A Series of fixed voltage regulators are designed with Thermal Overload Protection that shuts down the circuit when subjected to an excessive power overload condition, Internal Short-circuit Protection that limits the maximum current the circuit will pass, and Output Transistor Safe-Area Compensation that reduces the output short-circuit current as the voltage across the pass transistor is increased. VO, 7.0V to 20V Vi – VO ≥ 2.0V VXX IO = R1 The addition of an operational amplifier allows adjustment to higher or intermediate values while retaining regulation characteristics. The minimum voltage obtainable with this arrangement is 2.0V greater than the regulator voltage. + Id Figure 6 : Current Boost Regulator. VBEQ1 R1 = IREG – Io = IREG + βQ1 12/14 IQ1 βQ1 VBEQ1 [IREG – R1 ] Figure 7 : Short-circuit Protection. The circuitof figure 6can be modified to provide supply protection against short circuit by adding a shortcircuit sense resistor, R sc, and an additional PNP transistor. The current sensing PNP must be able to handle the short-circuit current of the three-terminal regulator. Therefore, a four-ampere plastic power transistor is specified. L7800AB/AC SERIES TO-220 MECHANICAL DATA mm DIM. MIN. inch MAX. MIN. A 4.40 TYP. 4.60 0.173 0.181 C 1.23 1.32 0.048 0.051 D 2.40 2.72 0.094 D1 TYP. MAX. 0.107 1.27 0.050 E 0.49 0.70 0.019 0.027 F 0.61 0.88 0.024 0.034 F1 1.14 1.70 0.044 0.067 F2 1.14 1.70 0.044 0.067 G 4.95 5.15 0.194 0.203 G1 2.4 2.7 0.094 0.106 H2 10.0 10.40 0.393 L2 0.409 16.4 0.645 13.0 14.0 0.511 0.551 L5 2.65 2.95 0.104 0.116 L6 15.2 15.9 0.598 0.625 L7 6.2 6.6 0.244 0.260 L9 3.5 4.2 0.137 0.165 DIA. 3.75 3.85 0.147 0.151 D1 C D A E L4 H2 G G1 F1 L2 F2 F Dia. L5 L9 L7 L6 L4 P011C 13/14 L7800AB/AC SERIES Information furnished is believed to be accurate and reliable. However, SGS-THOMSON Microelectronics assumes no responsability for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may results from its use. No license is granted by implication or otherwise under any patent or patent rights of SGS-THOMSON Microelectronics. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. SGS-THOMSON Microelectronics products are not authorized for use ascritical components in life support devices or systems without express written approval of SGS-THOMSON Microelectonics. 1994 SGS-THOMSON Microelectronics - All Rights Reserved SGS-THOMSON Microelectronics GROUP OF COMPANIES Australia - Brazil - France - Germany - Hong Kong - Italy - Japan - Korea - Malaysia - Malta - Morocco - The Netherlands Singapore - Spain - Sweden - Switzerland - Taiwan - Thailand - United Kingdom - U.S.A 14/14