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| L78M00AB/AC SERIES PRECISION 500mA REGULATORS .OUTPUTCURRENTUPTO0. .OUTPUTVOLTAGESOF5;6;8;9:10;12;15; .THERMALOVERLOADPROTECTI .SHORTCI .OUTPUTTRANSI .2%OUTPUTVOLTAGETOLERANCE .GUARANTEED 5A 18; 20; 24V ON RCUIT PROTECTION STORS SOA PROTECTION 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. BLOCK DIAGRAM TO-220 3 1 DPAK (TO-252) March 1997 1/15 L78M00AB/AC SERIES ABSOLUTE MAXIMUM RATINGS Symbol Vi Io Ptot Tstg Tj Parameter DC Input Voltage (for Vo = 5 to 18V) (for Vo = 20, 24V) Output Current Power Dissipation Storage Temperature Operating Junction Temperature for L78M00AC L78M00AB Value 35 40 Internally Limited Internally Limited -65 to 150 0 to 125 -40 to 125 o o Unit V V C C o C THERMAL DATA TO-220 Rthj-case Thermal Resistance Junction-case Rthj-amb Thermal Resistance Junction-ambient MAX MAX 3 50 DPAK 8 100 o o C/W C/W CONNECTION DIAGRAM AND ORDER CODES (top view) TO-220 DPAK Order Codes 0 to 125 oC DPAK L78M05ACDT L78M06ACDT L78M08ACDT L78M09ACDT L78M10ACDT L78M12ACDT L78M15ACDT L78M18ACDT L78M20ACDT L78M24ACDT TO-220 L78M05ABV L78M06ABV L78M08ABV L78M09ABV L78M10ABV L78M12ABV L78M15ABV L78M18ABV L78M20ABV L78M24ABV -40 to 125 oC DPAK L78M05ABDT L78M06ABDT L78M08ABDT L78M09ABDT L78M10ABDT L78M12ABDT L78M15ABDT L78M18ABDT L78M20ABDT L78M24ABDT Output Voltage 5V 6V 8V 9V 10V 12V 15V 18V 20V 24V 2/15 L78M00AB/AC SERIES APPLICATION CIRCUIT SCHEMATIC DIAGRAM 3/15 L78M00AB/AC SERIES TEST CIRCUITS Figure 1 : DC Parameters. Figure 2 : Load Regulation. Figure 3 : Ripple Rejection. 4/15 L78M00AB/AC SERIES ELECTRICAL CHARACTERISTICS FOR L78M05XX (refer to the test circuits, Vi = 10V, Io = 350 mA, Ci = 0.33 F, Co = 0.1 F, Tj = -40 to 125 oC (AB), Tj = 0 to 125 oC (AC) unless otherwise specified) Symbol Vo Vo Vo Parameter Output Voltage Output Voltage Line Regulation Tj = 25 C Io = 5 mA to 350 mA Vi = 7 to 20 V Io = 200 mA Vi = 7 to 25 V Vi = 8 to 25 V Tj = 25 oC 100 30 Tj = 25 oC Tj = 25 oC 100 50 6 0.5 0.8 -0.5 40 62 2 Vi = 35 V 300 700 Vi = 8 to 25 V mV mV mV mV mA mA mA mV/oC V dB V mA mA o Test Conditions Min. 4.9 4.8 Typ. 5 5 Max. 5.1 5.2 Unit V V Vo Id Id Id Vo T eN SVR Vd Isc Iscp Load Regulation Quiescent Current Quiescent Current Change Quiescent Current Change Output Voltage Drift Output Noise Voltage Supply Voltage Rejection Dropout Voltage Short Circuit Current Short Circuit Peack Current Io = 5 to 500 mA Io = 5 to 200 mA Tj = 25 oC Io = 5 to 350 mA Io = 200 mA Io = 5 mA B = 10Hz to 100KHz Tj = 25 oC Io = 300 mA f = 120 Hz Tj = 25 oC Vi = 8 to 18 V Tj = 25 oC Tj = 25 C Tj = 25 C o o ELECTRICAL CHARACTERISTICS FOR L78M06XX (refer to the test circuits, Vi = 11V, Io = 350 mA, Ci = 0.33 F, Co = 0.1 F, Tj = -40 to 125 oC (AB), Tj = 0 to 125 oC (AC) unless otherwise specified) Symbol Vo Vo Vo Parameter Output Voltage Output Voltage Line Regulation Tj = 25 C Io = 5 mA to 350 mA Vi = 8 to 21 V Io = 200 mA Vi = 8 to 25 V Vi = 9 to 25 V Tj = 25 oC 100 30 Tj = 25 oC Tj = 25 oC 120 60 6 0.5 0.8 -0.5 45 59 2 Vi = 35 V 270 700 Vi = 9 to 25 V mV mV mV mV mA mA mA mV/oC V dB V mA mA o Test Conditions Min. 5.88 5.75 Typ. 6 6 Max. 6.12 6.3 Unit V V Vo Id Id Id Vo T eN SVR Vd Isc Iscp Load Regulation Quiescent Current Quiescent Current Change Quiescent Current Change Output Voltage Drift Output Noise Voltage Supply Voltage Rejection Dropout Voltage Short Circuit Current Short Circuit Peack Current Io = 5 to 500 mA Io = 5 to 200 mA Tj = 25 oC Io = 5 to 350 mA Io = 200 mA Io = 5 mA B = 10Hz to 100KHz Tj = 25 oC Io = 300 mA f = 120 Hz Tj = 25 oC Vi = 9 to 19 V Tj = 25 oC Tj = 25 C Tj = 25 C o o 5/15 L78M00AB/AC SERIES ELECTRICAL CHARACTERISTICS FOR L78M08XX (refer to the test circuits, Vi = 14V, Io = 350 mA, Ci = 0.33 F, Co = 0.1 F, Tj = -40 to 125 oC (AB), Tj = 0 to 125 oC (AC) unless otherwise specified) Symbol Vo Vo Vo Parameter Output Voltage Output Voltage Line Regulation Tj = 25 C Io = 5 mA to 350 mA Vi = 10.5 to 23 V Io = 200 mA Tj = 25 oC Vi = 10.5 to 25 V Vi = 11 to 25 V Io = 5 to 500 mA Io = 5 to 200 mA Tj = 25 oC Io = 5 to 350 mA Io = 200 mA Io = 5 mA B = 10Hz to 100KHz Tj = 25 oC Io = 300 mA f = 120 Hz Tj = 25 oC Vi = 11.5 to 21.5 V Tj = 25 oC Tj = 25 C Tj = 25 C o o o Test Conditions Min. 7.84 7.7 Typ. 8 8 Max. 8.16 8.3 Unit V V 100 30 160 80 6 0.5 0.8 -0.5 52 56 2 mV mV mV mV mA mA mA mV/oC V dB V mA mA Vo Id Id Id Vo T eN SVR Vd Isc Iscp Load Regulation Quiescent Current Quiescent Current Change Quiescent Current Change Output Voltage Drift Output Noise Voltage Supply Voltage Rejection Dropout Voltage Short Circuit Current Short Circuit Peack Current Tj = 25 oC Tj = 25 oC Vi = 10.5 to 25 V Vi = 35 V 250 700 ELECTRICAL CHARACTERISTICS FOR L78M09XX (refer to the test circuits, Vi = 15V, Io = 350 mA, Ci = 0.33 F, Co = 0.1 F, Tj = -40 to 125 oC (AB), Tj = 0 to 125 oC (AC) unless otherwise specified) Symbol Vo Vo Vo Parameter Output Voltage Output Voltage Line Regulation Tj = 25 C Io = 5 mA to 350 mA Vi = 11.5 to 24 V Io = 200 mA Tj = 25 oC Vi = 11.5 to 25 V Vi = 12 to 25 V Io = 5 to 500 mA Io = 5 to 200 mA Tj = 25 oC Io = 5 to 350 mA Io = 200 mA Io = 5 mA B = 10Hz to 100KHz Tj = 25 oC Io = 300 mA f = 120 Hz Tj = 25 oC Vi = 12.5 to 23 V Tj = 25 oC Tj = 25 C Tj = 25 C o o o Test Conditions Min. 8.82 8.64 Typ. 9 9 Max. 9.18 9.36 Unit V V 100 30 180 90 6 0.5 0.8 -0.5 52 56 2 mV mV mV mV mA mA mA mV/oC V dB V mA mA Vo Id Id Id Vo T eN SVR Vd Isc Iscp Load Regulation Quiescent Current Quiescent Current Change Quiescent Current Change Output Voltage Drift Output Noise Voltage Supply Voltage Rejection Dropout Voltage Short Circuit Current Short Circuit Peack Current Tj = 25 oC Tj = 25 oC Vi = 11.5 to 25 V Vi = 35 V 250 700 6/15 L78M00AB/AC SERIES ELECTRICAL CHARACTERISTICS FOR L78M10XX (refer to the test circuits, Vi = 16V, Io = 350 mA, Ci = 0.33 F, Co = 0.1 F, Tj = -40 to 125 oC (AB), Tj = 0 to 125 oC (AC) unless otherwise specified) Symbol Vo Vo Vo Parameter Output Voltage Output Voltage Line Regulation Tj = 25 C Io = 5 mA to 350 mA Vi = 12.5 to 25 V Io = 200 mA Tj = 25 oC Vi = 12.5 to 30 V Vi = 13 to 30 V Io = 5 to 500 mA Io = 5 to 200 mA Tj = 25 oC Io = 5 to 350 mA Io = 200 mA Io = 5 mA B = 10Hz to 100KHz Tj = 25 oC Io = 300 mA f = 120 Hz Tj = 25 oC Vi = 13.5 to 24 V Tj = 25 oC Tj = 25 C Tj = 25 C o o o Test Conditions Min. 9.8 9.6 Typ. 10 10 Max. 10.2 10.4 Unit V V 100 30 200 100 6 0.5 0.8 -0.5 64 56 2 mV mV mV mV mA mA mA mV/oC V dB V mA mA Vo Id Id Id Vo T eN SVR Vd Isc Iscp Load Regulation Quiescent Current Quiescent Current Change Quiescent Current Change Output Voltage Drift Output Noise Voltage Supply Voltage Rejection Dropout Voltage Short Circuit Current Short Circuit Peack Current Tj = 25 oC Tj = 25 oC Vi = 12.5 to 30 V Vi = 35 V 245 700 ELECTRICAL CHARACTERISTICS FOR L78M12XX (refer to the test circuits, Vi = 19V, Io = 350 mA, Ci = 0.33 F, Co = 0.1 F, Tj = -40 to 125 oC (AB), Tj = 0 to 125 oC (AC) unless otherwise specified) Symbol Vo Vo Vo Parameter Output Voltage Output Voltage Line Regulation Tj = 25 C Io = 5 mA to 350 mA Vi = 14.5 to 27 V Io = 200 mA Tj = 25 oC Vi = 14.5 to 30 V Vi = 16 to 30 V Io = 5 to 500 mA Io = 5 to 200 mA Tj = 25 oC Io = 5 to 350 mA Io = 200 mA Io = 5 mA B = 10Hz to 100KHz Tj = 25 oC Io = 300 mA f = 120 Hz Tj = 25 oC Vi = 15 to 25 V Tj = 25 oC Tj = 25 C Tj = 25 C o o o Test Conditions Min. 11.75 11.5 Typ. 12 12 Max. 12.25 12.5 Unit V V 100 30 240 120 6 0.5 0.8 -1 75 55 2 mV mV mV mV mA mA mA mV/oC V dB V mA mA Vo Id Id Id Vo T eN SVR Vd Isc Iscp Load Regulation Quiescent Current Quiescent Current Change Quiescent Current Change Output Voltage Drift Output Noise Voltage Supply Voltage Rejection Dropout Voltage Short Circuit Current Short Circuit Peack Current Tj = 25 oC Tj = 25 oC Vi = 14.5 to 30 V Vi = 35 V 240 700 7/15 L78M00AB/AC SERIES ELECTRICAL CHARACTERISTICS FOR L78M15XX (refer to the test circuits, Vi = 23V, Io = 350 mA, Ci = 0.33 F, Co = 0.1 F, Tj = -40 to 125 oC (AB), Tj = 0 to 125 oC (AC) unless otherwise specified) Symbol Vo Vo Vo Parameter Output Voltage Output Voltage Line Regulation Tj = 25 C Io = 5 mA to 350 mA Vi = 17 to 30 V Io = 200 mA Tj = 25 oC Vi = 17.5 to 30 V Vi = 20 to 30 V Io = 5 to 500 mA Io = 5 to 200 mA Tj = 25 oC Io = 5 to 350 mA Io = 200 mA Io = 5 mA B = 10Hz to 100KHz Tj = 25 oC Io = 300 mA f = 120 Hz Tj = 25 oC Vi = 18.5 to 28.5 V Tj = 25 oC Tj = 25 C Tj = 25 C o o o Test Conditions Min. 14.7 14.4 Typ. 15 15 Max. 15.3 15.6 Unit V V 100 30 300 150 6 0.5 0.8 -1 90 54 2 mV mV mV mV mA mA mA mV/oC V dB V mA mA Vo Id Id Id Vo T eN SVR Vd Isc Iscp Load Regulation Quiescent Current Quiescent Current Change Quiescent Current Change Output Voltage Drift Output Noise Voltage Supply Voltage Rejection Dropout Voltage Short Circuit Current Short Circuit Peack Current Tj = 25 oC Tj = 25 oC Vi = 17.5 to 30 V Vi = 35 V 240 700 ELECTRICAL CHARACTERISTICS FOR L78M18XX (refer to the test circuits, Vi = 26V, Io = 350 mA, Ci = 0.33 F, Co = 0.1 F, Tj = -40 to 125 oC (AB), Tj = 0 to 125 oC (AC) unless otherwise specified) Symbol Vo Vo Vo Parameter Output Voltage Output Voltage Line Regulation Tj = 25 C Io = 5 mA to 350 mA Vi = 20.5 to 33 V Io = 200 mA Tj = 25 oC Vi = 21 to 33 V Vi = 24 to 33 V Io = 5 to 500 mA Io = 5 to 200 mA Tj = 25 oC Io = 5 to 350 mA Io = 200 mA Io = 5 mA B = 10Hz to 100KHz Tj = 25 oC Io = 300 mA f = 120 Hz Tj = 25 oC Vi = 22 to 32 V Tj = 25 oC Tj = 25 C Tj = 25 C o o o Test Conditions Min. 17.64 17.3 Typ. 18 18 Max. 18.36 18.7 Unit V V 100 30 360 180 6 0.5 0.8 -1.1 100 53 2 mV mV mV mV mA mA mA mV/oC V dB V mA mA Vo Id Id Id Vo T eN SVR Vd Isc Iscp Load Regulation Quiescent Current Quiescent Current Change Quiescent Current Change Output Voltage Drift Output Noise Voltage Supply Voltage Rejection Dropout Voltage Short Circuit Current Short Circuit Peack Current Tj = 25 oC Tj = 25 oC Vi = 21 to 33 V Vi = 35 V 240 700 8/15 L78M00AB/AC SERIES ELECTRICAL CHARACTERISTICS FOR L78M20XX (refer to the test circuits, Vi = 29V, Io = 350 mA, Ci = 0.33 F, Co = 0.1 F, Tj = -40 to 125 oC (AB), Tj = 0 to 125 oC (AC) unless otherwise specified) Symbol Vo Vo Vo Parameter Output Voltage Output Voltage Line Regulation Tj = 25 C Io = 5 mA to 350 mA Vi = 23 to 35 V Io = 200 mA Tj = 25 oC Vi = 23 to 35 V Vi = 24 to 35 V Io = 5 to 500 mA Io = 5 to 200 mA Tj = 25 oC Io = 5 to 350 mA Io = 200 mA Io = 5 mA B = 10Hz to 100KHz Tj = 25 oC Io = 300 mA f = 120 Hz Tj = 25 oC Vi = 24 to 34 V Tj = 25 oC Tj = 25 C Tj = 25 C o o o Test Conditions Min. 19.6 19.2 Typ. 20 20 Max. 20.4 20.8 Unit V V 100 30 400 200 6 0.5 0.8 -1.1 110 53 2 mV mV mV mV mA mA mA mV/oC V dB V mA mA Vo Id Id Id Vo T eN SVR Vd Isc Iscp Load Regulation Quiescent Current Quiescent Current Change Quiescent Current Change Output Voltage Drift Output Noise Voltage Supply Voltage Rejection Dropout Voltage Short Circuit Current Short Circuit Peack Current Tj = 25 oC Tj = 25 oC Vi = 23 to 35 V Vi = 35 V 240 700 ELECTRICAL CHARACTERISTICS FOR L78M24XX (refer to the test circuits, Vi = 33V, Io = 350 mA, Ci = 0.33 F, Co = 0.1 F, Tj = -40 to 125 oC (AB), Tj = 0 to 125 oC (AC) unless otherwise specified) Symbol Vo Vo Vo Parameter Output Voltage Output Voltage Line Regulation Tj = 25 C Io = 5 mA to 350 mA Vi = 27 to 38 V Io = 200 mA Tj = 25 oC Vi = 27 to 38 V Vi = 28 to 38 V Io = 5 to 500 mA Io = 5 to 200 mA Tj = 25 oC Io = 5 to 350 mA Io = 200 mA Io = 5 mA B = 10Hz to 100KHz Tj = 25 oC Io = 300 mA f = 120 Hz Tj = 25 oC Vi = 28 to 38 V Tj = 25 oC Tj = 25 C Tj = 25 C o o o Test Conditions Min. 23.5 23 Typ. 24 24 Max. 24.5 25 Unit V V 100 30 480 240 6 0.5 0.8 -1.2 170 50 2 mV mV mV mV mA mA mA mV/oC V dB V mA mA Vo Id Id Id Vo T eN SVR Vd Isc Iscp Load Regulation Quiescent Current Quiescent Current Change Quiescent Current Change Output Voltage Drift Output Noise Voltage Supply Voltage Rejection Dropout Voltage Short Circuit Current Short Circuit Peack Current Tj = 25 oC Tj = 25 oC Vi = 27 to 38 V Vi = 35 V 240 700 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 0.33F 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. Figure 14 : Adjustable Output Regulator. Io = VXX R1 + Id VO, 7.0V to 20V Vi - VO 2.0V 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. Figure 16 : Short-circuit Protection. R1 = IREQ - VBEQ1 IQ1 Q1 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. IO = IREG + Q1 [IREG - 12/15 L78M00AB/AC SERIES TO-220 MECHANICAL DATA DIM. MIN. A C D D1 E F F2 G H2 H3 L2 L3 L5 L6 L7 Dia. 26.3 2.6 15.1 6 3.65 10.05 16.2 26.7 27.1 3 15.8 6.6 3.85 1.035 0.102 0.594 0.236 0.144 2.4 1.2 0.35 0.8 1.15 4.95 5.08 mm TYP. MAX. 4.8 1.37 2.8 1.35 0.55 1.05 1.4 5.21 10.4 10.4 0.396 0.638 1.051 1.067 0.118 0.622 0.260 0.152 0.094 0.047 0.014 0.031 0.045 0.195 0.200 MIN. inch TYP. MAX. 0.189 0.054 0.110 0.053 0.022 0.041 0.055 0.205 0.409 0.409 P011D 13/15 L78M00AB/AC SERIES TO-252 (DPAK) MECHANICAL DATA mm MIN. A A1 A2 B B2 C C2 D E G H L2 L4 0.6 2.2 0.9 0.03 0.64 5.2 0.45 0.48 6 6.4 4.4 9.35 0.8 1 0.023 TYP. MAX. 2.4 1.1 0.23 0.9 5.4 0.6 0.6 6.2 6.6 4.6 10.1 MIN. 0.086 0.035 0.001 0.025 0.204 0.017 0.019 0.236 0.252 0.173 0.368 0.031 0.039 inch TYP. MAX. 0.094 0.043 0.009 0.035 0.212 0.023 0.023 0.244 0.260 0.181 0.397 DIM. H A C2 C DETAIL "A" A1 L2 D DETAIL "A" B = = 3 B2 = = L4 1 = G E 2 = A2 0068772-B 14/15 L78M00AB/AC SERIES Information furnished is believed to be accurate and reliable. However, SGS-THOMSON Microelectronics assumes no responsability for the consequ ences 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 compone in life support devices or systems without express nts written approval of SGS-THOMSON Microelectonics. (c) 1997 SGS-THOMSON Microelectronics - Printed in Italy - All Rights Reserved SGS-THOMSON Microelectronics GROUP OF COMPANIES Australia - Brazil - Canada - China - 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 |
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