L78M00AB/AC SERIES PRECISION 500mA REGULATORS .. .. .. . OUTPUT CURRENT UP TO 0.5A OUTPUT VOLTAGES OF 5; 6; 8; 9: 10; 12; 15; 18; 20; 24V THERMAL OVERLOAD PROTECTION SHORT CIRCUIT PROTECTION OUTPUT TRANSISTORS SOA PROTECTION ± 2% OUTPUT VOLTAGE TOLERANCE GUARANTEED IN EXTENDED TEMPERATURE RANGES DESCRIPTION The L78M00AB series of three-therminal positive regulators is available in TO-220 and DPAK 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 0.5A 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 3 1 DPAK (TO-252) BLOCK DIAGRAM April 1994 1/15 L78M00AB/AC SERIES ABSOLUTE MAXIMUM RATINGS Symbol Parameter Vi DC Input Voltage (for Vo = 5 to 18V) (for Vo = 20, 24V) Io Value Unit 35 40 V V Output Current Internally Limited Ptot Power Dissipation Internally Limited Tstg Storage Temperature Tj Operating Junction Temperature for L78M00AC L78M00AB -65 to 150 o C 0 to 125 -40 to 125 o C C o THERMAL DATA Rthj-case Thermal Resistance Junction-case Rthj-amb Thermal Resistance Junction-ambient MAX MAX TO-220 DPAK 3 50 8 100 o CONNECTION DIAGRAM AND ORDER CODES (top view) TO-220 DPAK Order Codes 0 to 125 oC 2/15 Output Voltage -40 to 125 oC DPAK TO-220 DPAK L78M05ACDT L78M05ABV L78M05ABDT 5V L78M06ACDT L78M06ABV L78M06ABDT 6V L78M08ACDT L78M08ABV L78M08ABDT 8V L78M09ACDT L78M10ACDT L78M09ABV L78M10ABV L78M09ABDT L78M10ABDT 9V 10V L78M12ACDT L78M12ABV L78M12ABDT 12V L78M15ACDT L78M15ABV L78M15ABDT 15V L78M18ACDT L78M18ABV L78M18ABDT 18V L78M20ACDT L78M20ABV L78M20ABDT 20V L78M24ACDT L78M24ABV L78M24ABDT 24V C/W C/W o L78M00AB/AC SERIES APPLICATION CIRCUIT SCHEMATIC DIAGRAM 3/15 L78M00AB/AC SERIES TEST CIRCUITS Figure 1 : DC Parameters. Figure 3 : Ripple Rejection. 4/15 Figure 2 : Load Regulation. L78M00AB/AC SERIES ELECTRICAL CHARACTERISTICS FOR L78M05XX (refer to the test circuits, Vi = 10V, Io = 350 mA, Ci = 0.33 µF, Co = 0.1 µF, Tj = -40 to 125 oC (AB), Tj = 0 to 125 oC (AC) unless otherwise specified) Symbol Parameter Test Conditions o Min. Typ. Max. Unit Vo Output Voltage Tj = 25 C 4.9 5 5.1 V Vo Output Voltage Io = 5 mA to 350 mA Vi = 7 to 20 V 4.8 5 5.2 V ∆Vo Line Regulation Io = 200 mA Vi = 7 to 25 V Vi = 8 to 25 V 100 30 mV mV 100 50 mV mV 6 mA 0.5 mA ∆Vo Tj = 25 oC Tj = 25 oC Tj = 25 oC Load Regulation Io = 5 to 500 mA Io = 5 to 200 mA Quiescent Current Tj = 25 oC ∆Id Quiescent Current Change Io = 5 to 350 mA ∆Id Quiescent Current Change Io = 200 mA ∆Vo ∆T Output Voltage Drift Io = 5 mA Output Noise Voltage B = 10Hz to 100KHz Tj = 25 oC Supply Voltage Rejection Io = 300 mA f = 120 Hz Tj = 25 oC Vi = 8 to 18 V Dropout Voltage Tj = 25 oC Id eN SVR Vd Vi = 8 to 25 V 0.8 µV 40 62 o mA mV/oC -0.5 dB 2 V Isc Short Circuit Current Tj = 25 C Vi = 35 V 300 mA Iscp Short Circuit Peack Current Tj = 25 oC 700 mA ELECTRICAL CHARACTERISTICS FOR L78M06XX (refer to the test circuits, Vi = 11V, Io = 350 mA, Ci = 0.33 µF, Co = 0.1 µF, Tj = -40 to 125 oC (AB), Tj = 0 to 125 oC (AC) unless otherwise specified) Symbol Parameter Test Conditions o Min. Typ. Max. Unit Vo Output Voltage Tj = 25 C 5.88 6 6.12 V Vo Output Voltage Io = 5 mA to 350 mA Vi = 8 to 21 V 5.75 6 6.3 V ∆Vo Line Regulation Io = 200 mA Vi = 8 to 25 V Vi = 9 to 25 V 100 30 mV mV 120 60 mV mV 6 mA 0.5 mA ∆Vo Tj = 25 oC Tj = 25 oC Tj = 25 oC Load Regulation Io = 5 to 500 mA Io = 5 to 200 mA Quiescent Current Tj = 25 oC ∆Id Quiescent Current Change Io = 5 to 350 mA ∆Id Quiescent Current Change Io = 200 mA ∆Vo ∆T Output Voltage Drift Io = 5 mA Output Noise Voltage B = 10Hz to 100KHz Tj = 25 oC Supply Voltage Rejection Io = 300 mA f = 120 Hz Tj = 25 oC Vi = 9 to 19 V Dropout Voltage Tj = 25 oC Id eN SVR Vd o Vi = 9 to 25 V 0.8 -0.5 45 59 mA mV/oC µV dB 2 V Isc Short Circuit Current Tj = 25 C Vi = 35 V 270 mA Iscp Short Circuit Peack Current Tj = 25 oC 700 mA 5/15 L78M00AB/AC SERIES ELECTRICAL CHARACTERISTICS FOR L78M08XX (refer to the test circuits, Vi = 14V, Io = 350 mA, Ci = 0.33 µF, Co = 0.1 µF, Tj = -40 to 125 oC (AB), Tj = 0 to 125 oC (AC) unless otherwise specified) Symbol Parameter Test Conditions o Min. Typ. Max. Unit Vo Output Voltage Tj = 25 C 7.84 8 8.16 V Vo Output Voltage Io = 5 mA to 350 mA Vi = 10.5 to 23 V 7.7 8 8.3 V ∆Vo Line Regulation Io = 200 mA Tj = 25 oC Vi = 10.5 to 25 V Vi = 11 to 25 V 100 30 mV mV 160 80 mV mV 6 mA 0.5 mA ∆Vo Tj = 25 oC Tj = 25 oC Load Regulation Io = 5 to 500 mA Io = 5 to 200 mA Quiescent Current Tj = 25 oC ∆Id Quiescent Current Change Io = 5 to 350 mA ∆Id Quiescent Current Change Io = 200 mA ∆Vo ∆T Output Voltage Drift Io = 5 mA Output Noise Voltage B = 10Hz to 100KHz Tj = 25 oC Supply Voltage Rejection Io = 300 mA f = 120 Hz Tj = 25 oC Vi = 11.5 to 21.5 V Dropout Voltage Tj = 25 oC Id eN SVR Vd Vi = 10.5 to 25 V 0.8 µV 52 56 o mA mV/oC -0.5 dB 2 V Isc Short Circuit Current Tj = 25 C Vi = 35 V 250 mA Iscp Short Circuit Peack Current Tj = 25 oC 700 mA ELECTRICAL CHARACTERISTICS FOR L78M09XX (refer to the test circuits, Vi = 15V, Io = 350 mA, Ci = 0.33 µF, Co = 0.1 µF, Tj = -40 to 125 oC (AB), Tj = 0 to 125 oC (AC) unless otherwise specified) Symbol Parameter Test Conditions o Min. Typ. Max. Unit Vo Output Voltage Tj = 25 C 8.82 9 9.18 V Vo Output Voltage Io = 5 mA to 350 mA Vi = 11.5 to 24 V 8.64 9 9.36 V ∆Vo Line Regulation Io = 200 mA Tj = 25 oC Vi = 11.5 to 25 V Vi = 12 to 25 V 100 30 mV mV 180 90 mV mV 6 mA 0.5 mA ∆Vo Tj = 25 oC Tj = 25 oC Load Regulation Io = 5 to 500 mA Io = 5 to 200 mA Quiescent Current Tj = 25 oC ∆Id Quiescent Current Change Io = 5 to 350 mA ∆Id Quiescent Current Change Io = 200 mA ∆Vo ∆T Output Voltage Drift Io = 5 mA Output Noise Voltage B = 10Hz to 100KHz Tj = 25 oC Supply Voltage Rejection Io = 300 mA f = 120 Hz Tj = 25 oC Vi = 12.5 to 23 V Dropout Voltage Tj = 25 oC Id eN SVR Vd o Vi = 11.5 to 25 V 0.8 -0.5 52 56 mA mV/oC µV dB 2 V Isc Short Circuit Current Tj = 25 C Vi = 35 V 250 mA Iscp Short Circuit Peack Current Tj = 25 oC 700 mA 6/15 L78M00AB/AC SERIES ELECTRICAL CHARACTERISTICS FOR L78M10XX (refer to the test circuits, Vi = 16V, Io = 350 mA, Ci = 0.33 µF, Co = 0.1 µF, Tj = -40 to 125 oC (AB), Tj = 0 to 125 oC (AC) unless otherwise specified) Symbol Parameter Test Conditions o Min. Typ. Max. Unit Vo Output Voltage Tj = 25 C 9.8 10 10.2 V Vo Output Voltage Io = 5 mA to 350 mA Vi = 12.5 to 25 V 9.6 10 10.4 V ∆Vo Line Regulation Io = 200 mA Tj = 25 oC Vi = 12.5 to 30 V Vi = 13 to 30 V 100 30 mV mV 200 100 mV mV 6 mA 0.5 mA ∆Vo Tj = 25 oC Tj = 25 oC Load Regulation Io = 5 to 500 mA Io = 5 to 200 mA Quiescent Current Tj = 25 oC ∆Id Quiescent Current Change Io = 5 to 350 mA ∆Id Quiescent Current Change Io = 200 mA ∆Vo ∆T Output Voltage Drift Io = 5 mA Output Noise Voltage B = 10Hz to 100KHz Tj = 25 oC Supply Voltage Rejection Io = 300 mA f = 120 Hz Tj = 25 oC Vi = 13.5 to 24 V Dropout Voltage Tj = 25 oC Id eN SVR Vd Vi = 12.5 to 30 V 0.8 µV 64 56 o mA mV/oC -0.5 dB 2 V Isc Short Circuit Current Tj = 25 C Vi = 35 V 245 mA Iscp Short Circuit Peack Current Tj = 25 oC 700 mA ELECTRICAL CHARACTERISTICS FOR L78M12XX (refer to the test circuits, Vi = 19V, Io = 350 mA, Ci = 0.33 µF, Co = 0.1 µF, Tj = -40 to 125 oC (AB), Tj = 0 to 125 oC (AC) unless otherwise specified) Symbol Parameter Test Conditions o Min. Typ. Max. Unit Vo Output Voltage Tj = 25 C 11.75 12 12.25 V Vo Output Voltage Io = 5 mA to 350 mA Vi = 14.5 to 27 V 11.5 12 12.5 V ∆Vo Line Regulation Io = 200 mA Tj = 25 oC Vi = 14.5 to 30 V Vi = 16 to 30 V 100 30 mV mV 240 120 mV mV 6 mA 0.5 mA ∆Vo Tj = 25 oC Tj = 25 oC Load Regulation Io = 5 to 500 mA Io = 5 to 200 mA Quiescent Current Tj = 25 oC ∆Id Quiescent Current Change Io = 5 to 350 mA ∆Id Quiescent Current Change Io = 200 mA ∆Vo ∆T Output Voltage Drift Io = 5 mA Output Noise Voltage B = 10Hz to 100KHz Tj = 25 oC Supply Voltage Rejection Io = 300 mA f = 120 Hz Tj = 25 oC Vi = 15 to 25 V Dropout Voltage Tj = 25 oC Id eN SVR Vd o Vi = 14.5 to 30 V 0.8 -1 75 55 mA mV/oC µV dB 2 V Isc Short Circuit Current Tj = 25 C Vi = 35 V 240 mA Iscp Short Circuit Peack Current Tj = 25 oC 700 mA 7/15 L78M00AB/AC SERIES ELECTRICAL CHARACTERISTICS FOR L78M15XX (refer to the test circuits, Vi = 23V, Io = 350 mA, Ci = 0.33 µF, Co = 0.1 µF, Tj = -40 to 125 oC (AB), Tj = 0 to 125 oC (AC) unless otherwise specified) Symbol Parameter Test Conditions o Min. Typ. Max. Unit Vo Output Voltage Tj = 25 C 14.7 15 15.3 V Vo Output Voltage Io = 5 mA to 350 mA Vi = 17 to 30 V 14.4 15 15.6 V ∆Vo Line Regulation Io = 200 mA Tj = 25 oC Vi = 17.5 to 30 V Vi = 20 to 30 V 100 30 mV mV 300 150 mV mV 6 mA 0.5 mA ∆Vo Tj = 25 oC Tj = 25 oC Load Regulation Io = 5 to 500 mA Io = 5 to 200 mA Quiescent Current Tj = 25 oC ∆Id Quiescent Current Change Io = 5 to 350 mA ∆Id Quiescent Current Change Io = 200 mA ∆Vo ∆T Output Voltage Drift Io = 5 mA Output Noise Voltage B = 10Hz to 100KHz Tj = 25 oC Supply Voltage Rejection Io = 300 mA f = 120 Hz Tj = 25 oC Vi = 18.5 to 28.5 V Dropout Voltage Tj = 25 oC Id eN SVR Vd Vi = 17.5 to 30 V 0.8 µV 90 54 o mA mV/oC -1 dB 2 V Isc Short Circuit Current Tj = 25 C Vi = 35 V 240 mA Iscp Short Circuit Peack Current Tj = 25 oC 700 mA ELECTRICAL CHARACTERISTICS FOR L78M18XX (refer to the test circuits, Vi = 26V, Io = 350 mA, Ci = 0.33 µF, Co = 0.1 µF, Tj = -40 to 125 oC (AB), Tj = 0 to 125 oC (AC) unless otherwise specified) Symbol Parameter Test Conditions o Min. Typ. Max. Unit Vo Output Voltage Tj = 25 C 17.64 18 18.36 V Vo Output Voltage Io = 5 mA to 350 mA Vi = 20.5 to 33 V 17.3 18 18.7 V ∆Vo Line Regulation Io = 200 mA Tj = 25 oC Vi = 21 to 33 V Vi = 24 to 33 V 100 30 mV mV 360 180 mV mV 6 mA 0.5 mA ∆Vo Tj = 25 oC Tj = 25 oC Load Regulation Io = 5 to 500 mA Io = 5 to 200 mA Quiescent Current Tj = 25 oC ∆Id Quiescent Current Change Io = 5 to 350 mA ∆Id Quiescent Current Change Io = 200 mA ∆Vo ∆T Output Voltage Drift Io = 5 mA Output Noise Voltage B = 10Hz to 100KHz Tj = 25 oC Supply Voltage Rejection Io = 300 mA f = 120 Hz Tj = 25 oC Vi = 22 to 32 V Dropout Voltage Tj = 25 oC Id eN SVR Vd o Vi = 21 to 33 V 0.8 -1.1 100 53 mA mV/oC µV dB 2 V Isc Short Circuit Current Tj = 25 C Vi = 35 V 240 mA Iscp Short Circuit Peack Current Tj = 25 oC 700 mA 8/15 L78M00AB/AC SERIES ELECTRICAL CHARACTERISTICS FOR L78M20XX (refer to the test circuits, Vi = 29V, Io = 350 mA, Ci = 0.33 µF, Co = 0.1 µF, Tj = -40 to 125 oC (AB), Tj = 0 to 125 oC (AC) unless otherwise specified) Symbol Parameter Test Conditions o Min. Typ. Max. Unit Vo Output Voltage Tj = 25 C 19.6 20 20.4 V Vo Output Voltage Io = 5 mA to 350 mA Vi = 23 to 35 V 19.2 20 20.8 V ∆Vo Line Regulation Io = 200 mA Tj = 25 oC Vi = 23 to 35 V Vi = 24 to 35 V 100 30 mV mV 400 200 mV mV 6 mA 0.5 mA ∆Vo Tj = 25 oC Tj = 25 oC Load Regulation Io = 5 to 500 mA Io = 5 to 200 mA Quiescent Current Tj = 25 oC ∆Id Quiescent Current Change Io = 5 to 350 mA ∆Id Quiescent Current Change Io = 200 mA ∆Vo ∆T Output Voltage Drift Io = 5 mA Output Noise Voltage B = 10Hz to 100KHz Tj = 25 oC Supply Voltage Rejection Io = 300 mA f = 120 Hz Tj = 25 oC Vi = 24 to 34 V Dropout Voltage Tj = 25 oC Id eN SVR Vd Vi = 23 to 35 V 0.8 µV 110 53 o mA mV/oC -1.1 dB 2 V Isc Short Circuit Current Tj = 25 C Vi = 35 V 240 mA Iscp Short Circuit Peack Current Tj = 25 oC 700 mA ELECTRICAL CHARACTERISTICS FOR L78M24XX (refer to the test circuits, Vi = 33V, Io = 350 mA, Ci = 0.33 µF, Co = 0.1 µF, Tj = -40 to 125 oC (AB), Tj = 0 to 125 oC (AC) unless otherwise specified) Symbol Parameter Test Conditions o Vo Output Voltage Tj = 25 C Vo Output Voltage Io = 5 mA to 350 mA Vi = 27 to 38 V ∆Vo Line Regulation Io = 200 mA Tj = 25 oC Vi = 27 to 38 V Vi = 28 to 38 V ∆Vo Io = 5 to 500 mA Io = 5 to 200 mA Quiescent Current Tj = 25 oC ∆Id Quiescent Current Change Io = 5 to 350 mA ∆Id Quiescent Current Change Io = 200 mA ∆Vo ∆T Output Voltage Drift Io = 5 mA Output Noise Voltage B = 10Hz to 100KHz Tj = 25 oC Supply Voltage Rejection Io = 300 mA f = 120 Hz Tj = 25 oC Vi = 28 to 38 V Dropout Voltage Tj = 25 oC eN SVR Vd o Typ. Max. Unit 23.5 24 24.5 V 23 24 25 V 100 30 mV mV 480 240 mV mV 6 mA 0.5 mA Tj = 25 oC Tj = 25 oC Load Regulation Id Min. Vi = 27 to 38 V 0.8 -1.2 170 50 mA mV/oC µV dB 2 V Isc Short Circuit Current Tj = 25 C Vi = 35 V 240 mA Iscp Short Circuit Peack Current Tj = 25 oC 700 mA 9/15 L78M00AB/AC SERIES Figure 4 : Dropout Voltage vs. Junction Temperature. Figure 5 : Dropout Characteristics. Figure 6 : Peak Output Current vs. Input-Output Differential Voltage. Figure 7 : Output Voltage vs. Junction Temperature. Figure 8 : Supply Voltage Rejection vs. Frequency. Figure 9 : Quiescent Current vs. Junction Temperature. 10/15 L78M00AB/AC SERIES Figure 10 : Load Transient Response. Figure 11 : Line Transient Response. Figure 12 : Quiescent Current vs. Input Voltage. APPLICATIONS INFORMATION DESIGN CONSIDERATIONS The L78M00AB 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 as the voltage across the pass transistor is increased. 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. 11/15 L78M00AB/AC SERIES Figure 13 : Current Regulator. Io = VXX R1 Figure 14 : Adjustable Output Regulator. VO, 7.0V to 20V Vi – VO ≥ 2.0V + Id 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. Figure 15 : Current Boost Regulator. R1 = IREQ – Figure 16 : Short-circuit Protection. VBEQ1 IQ1 βQ1 IO = IREG + Q1 [IREG – VBEQ1 R1 ] The circuit of figure 6 can be modified to provide supply protection against short circuits by adding a short-circuit sense resistor, RSC, 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. 12/15 L78M00AB/AC SERIES TO-220 MECHANICAL DATA mm DIM. MIN. TYP. inch MAX. MIN. TYP. MAX. A 4.8 0.189 C 1.37 0.054 D 2.4 2.8 0.094 0.110 D1 1.2 1.35 0.047 0.053 E 0.35 0.55 0.014 0.022 F 0.8 1.05 0.031 0.041 F2 1.15 1.4 0.045 0.055 G 4.95 5.21 0.195 5.08 H2 H3 0.200 10.4 10.05 L2 10.4 0.409 0.396 16.2 L3 26.3 L5 26.7 0.205 0.409 0.638 27.1 1.035 1.051 1.067 2.6 3 0.102 0.118 L6 15.1 15.8 0.594 0.622 L7 6 6.6 0.236 0.260 Dia. 3.65 3.85 0.144 0.152 P011D 13/15 L78M00AB/AC SERIES TO-252 (DPAK) MECHANICAL DATA mm DIM. MIN. TYP. inch MAX. MIN. A 2.2 2.4 0.086 TYP. 0.094 A1 0.9 1.1 0.035 0.043 B 0.64 0.8 0.025 0.031 B1 3.4 3.6 0.133 0.141 B2 5.2 5.4 0.204 0.212 B3 0.9 0.035 B4 1.9 2.1 0.074 0.082 C 0.48 0.6 0.018 0.023 C1 0.45 0.6 0.017 0.023 D 6 6.2 0.236 0.244 E 6.4 6.6 0.252 0.260 G 4.4 4.6 0.173 0.181 H 9.35 10.1 0.368 0.397 L 2.55 3.05 0.100 0.120 L1 0.6 1 0.023 0.039 L2 0.8 0.031 L3 0.8 1.2 0.031 0.047 L4 0.3 0.45 0.012 0.017 L3 1 L1 =G= 2 = = B4 B1 = = B2 = = E = = 3 L4 B L D B3 L2 A1 C1 C A H 14/15 MAX. L78M00AB/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 as critical 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 15/15