LM78LXX Series 3-Terminal Positive Regulators General Description The LM78LXX series of three terminal positive regulators is available with several fixed output voltages making them useful in a wide range of applications. When used as a zener diode/resistor combination replacement, the LM78LXX usually results in an effective output impedance improvement of two orders of magnitude, and lower quiescent current. These regulators can provide local on card regulation, eliminating the distribution problems associated with single point regulation. The voltages available allow the LM78LXX to be used in logic systems, instrumentation, HiFi, and other solid state electronic equipment. The LM78LXX is available in the plastic TO-92 (Z) package, the plastic SO-8 (M) package and a chip sized package (8Bump micro SMD) using National's micro SMD package technology. With adequate heat sinking the regulator can deliver 100mA output current. Current limiting is included to limit the peak output current to a safe value. Safe area protection for the output transistors is provided to limit internal power dissi- pation. If internal power dissipation becomes too high for the heat sinking provided, the thermal shutdown circuit takes over preventing the IC from overheating. Features LM78L05 in micro SMD package Output voltage tolerances of 5% over the temperature range Output current of 100mA Internal thermal overload protection Output transistor safe area protection Internal short circuit current limit Available in plastic TO-92 and plastic SO-8 low profile packages No external components Output voltages of 5.0V, 6.2V, 8.2V, 9.0V, 12V, 15V See AN-1112 for micro SMD considerations Connection Diagrams SO-8 Plastic (M) (Narrow Body) 8-Bump micro SMD 774402 Top View 774424 Top View (Bump Side Down) (TO-92) Plastic Package (Z) micro SMD Marking Orientation 774403 Bottom View 774433 Top View (c) 2011 National Semiconductor Corporation 7744 www.national.com LM78LXX Series 3-Terminal Positive Regulators April 14, 2011 LM78LXX Series Ordering Information Package NSC Drawing Output Voltage Order Number Supplied As micro SMD BPA08AAB 5V LM78L05IBPX Reel of 3000 Thin micro SMD TPA08AAA 5V 9V 5V SOIC Narrow TO-92 www.national.com M08A Z03A LM78L05ITP Reel of 250 LM78L05ITPX Reel of 3000 LM78L09ITPX Reel of 3000 LM78L05ACM Rail of 95 LM78L05ACMX Reel of 2500 LM78L05AIM Rail of 95 LM78L05AIMX Reel of 2500 12V LM78L12ACMX Reel of 2500 15V LM78L15ACMX Reel of 2500 5V LM78L05ACZ Box of 1800 6.2V LM78L62ACZ Box of 1800 9V LM78L09ACZ Box of 1800 12V LM78L12ACZ Box of 1800 15V LM78L15ACZ Box of 1800 2 If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Power Dissipation (Note 5) Input Voltage Storage Temperature ESD Susceptibility (Note 2) Internally Limited 35V -65C to +150C 1kV 0C to 125C -40C to 125C -40C to 85C 235C 260C (lead time) LM78LXX Electrical Characteristics Limits in standard typeface are for TJ = 25C, Bold typeface applies over the entire operating temperature range of the indicated package. Limits are guaranteed by production testing or correlation techniques using standard Statistical Quality Control (SQC) methods. Unless otherwise specified: IO = 40mA, CI = 0.33F, CO = 0.1F. LM78L05 Unless otherwise specified, VIN = 10V Symbol VO Parameter Conditions Output Voltage Min Typ Max 4.8 5 5.2 Units 7V VIN 20V 1mA IO 40mA (Note 3) 1mA IO 70mA (Note 3) VO Line Regulation VO Load Regulation IQ Quiescent Current IQ Quiescent Current Change Vn 8V VIN 20V 10 54 1mA IO 100mA 20 60 1mA IO 40mA 5 30 3 5 8V VIN 20V 1.0 1mA IO 40mA 0.1 Ripple Rejection f = 120 Hz Peak Output Current Minimum Value of Input Voltage Required to Maintain Line Regulation JA Thermal Resistance (8-Bump micro SMD) 5.25 75 f = 10 Hz to 100 kHz (Note 4) VIN (Min) 4.75 18 Output Noise Voltage Average Output Voltage Tempco 5.25 7V VIN 20V 8V VIN 16V IPK 4.75 IO = 5mA 47 mV mA 40 V 62 dB 140 mA -0.65 mV/C 6.7 230.9 3 V 7 V C/W www.national.com LM78LXX Series Operating Junction Temperature SO-8, TO-92 SO-8 (5V Only) micro SMD Soldering Information Infrared or Convection (20 sec.) Wave Soldering (10 sec.) Absolute Maximum Ratings (Note 1) LM78LXX Series LM78L62AC Unless otherwise specified, VIN = 12V Symbol VO Parameter Conditions Output Voltage Min Typ Max 5.95 6.2 6.45 Units 8.5V VIN 20V 1mA IO 40mA (Note 3) 1mA IO 70mA (Note 3) VO Line Regulation VO Load Regulation IQ Quiescent Current IQ Quiescent Current Change Vn 6.5 5.9 6.5 8.5V VIN 20V 65 175 9V VIN 20V 55 125 1mA IO 100mA 13 80 1mA IO 40mA 6 40 2 5.5 8V VIN 20V 1.5 1mA IO 40mA 0.1 Output Noise Voltage f = 10 Hz to 100 kHz (Note 4) Ripple Rejection f = 120 Hz 10V VIN 20V IPK 5.9 40 Peak Output Current Average Output Voltage Tempco VIN (Min) IO = 5mA Minimum Value of Input Voltage Required to Maintain Line Regulation V mV mA 50 V 46 dB 140 mA -0.75 mV/C 7.9 V LM78L82AC Unless otherwise specified, VIN = 14V Symbol VO Parameter Conditions Output Voltage Min Typ Max 7.87 8.2 8.53 Units 11V VIN 23V 1mA IO 40mA (Note 3) 1mA IO 70mA (Note 3) VO VO Line Regulation Load Regulation IQ Quiescent Current IQ Quiescent Current Change Vn www.national.com 8.6 175 12V VIN 23V 70 125 1mA IO 100mA 15 80 1mA IO 40mA 8 40 2 5.5 12V VIN 23V 1.5 1mA IO 40mA 0.1 f = 10 Hz to 100 kHz (Note 4) Ripple Rejection f = 120 Hz 4 7.8 80 Output Noise Voltage Peak Output Current 8.6 11V VIN 23V 12V VIN 22V IPK 7.8 39 V mV mA 60 V 45 dB 140 mA Parameter Conditions Average Output Voltage Tempco VIN (Min) Min IO = 5mA Minimum Value of Input Voltage Required to Maintain Line Regulation Typ Max Units -0.8 mV/C 9.9 V LM78L09AC Unless otherwise specified, VIN = 15V Symbol VO Parameter Conditions Output Voltage Min Typ Max 8.64 9.0 9.36 Units 11.5V VIN 24V 1mA IO 40mA (Note 3) 1mA IO 70mA (Note 3) VO Line Regulation VO Load Regulation IQ Quiescent Current IQ Quiescent Current Change Vn Output Noise Voltage 8.55 9.45 8.55 9.45 11.5V VIN 24V 100 200 13V VIN 24V 90 150 1mA IO 100mA 20 90 1mA IO 40mA 10 45 2 5.5 11.5V VIN 24V 1.5 1mA IO 40mA Ripple Rejection f = 120 Hz 15V VIN 25V IPK VIN (Min) mV mA 0.1 38 Peak Output Current Average Output Voltage Tempco V IO = 5mA Minimum Value of Input Voltage Required to Maintain Line Regulation 70 V 44 dB 140 mA -0.9 mV/C 10.7 V LM78L12AC Unless otherwise specified, VIN = 19V Symbol VO Parameter Conditions Output Voltage Min Typ Max 11.5 12 12.5 Units 14.5V VIN 27V 1mA IO 40mA (Note 3) 1mA IO 70mA (Note 3) VO VO Line Regulation Load Regulation IQ Quiescent Current IQ Quiescent Current Change Vn Output Noise Voltage 11.4 12.6 11.4 12.6 14.5V VIN 27V 30 180 16V VIN 27V 20 110 1mA IO 100mA 30 100 1mA IO 40mA 10 50 3 5 16V VIN 27V 1 1mA IO 40mA 0.1 80 5 V mV mA V www.national.com LM78LXX Series Symbol LM78LXX Series Symbol Parameter Conditions Ripple Rejection f = 120 Hz 15V VIN 25 IPK Min Typ 40 54 dB 140 mA -1.0 mV/C Peak Output Current Average Output Voltage Tempco VIN (Min) IO = 5mA Minimum Value of Input Voltage Required to Maintain Line Regulation Max Units 13.7 14.5 V Min Typ Max Units 14.4 15.0 15.6 LM78L15AC Unless otherwise specified, VIN = 23V Symbol VO Parameter Conditions Output Voltage 17.5V VIN 30V 1mA IO 40mA (Note 3) 1mA IO 70mA (Note 3) VO Line Regulation VO Load Regulation IQ 14.25 15.75 14.25 15.75 17.5V VIN 30V 37 250 20V VIN 30V 25 140 1mA IO 100mA 35 150 1mA IO 40mA 12 75 3 5 Quiescent Current IQ Vn Quiescent Current Change 20V VIN 30V 1 1mA IO 40mA 0.1 Output Noise Voltage Ripple Rejection f = 120 Hz 18.5V VIN 28.5V IPK Peak Output Current Average Output Voltage Tempco VIN (Min) IO = 5mA Minimum Value of Input Voltage Required to Maintain Line Regulation 37 V mV mA 90 V 51 dB 140 mA -1.3 mV/C 16.7 17.5 V Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Electrical specifications do not apply when operating the device outside of its stated operating conditions. Note 2: Human body model, 1.5 k in series with 100pF. Note 3: Power dissipation 0.75W. Note 4: Recommended minimum load capacitance of 0.01F to limit high frequency noise. Note 5: Typical thermal resistance values for the packages are: Z Package: JC = 60 C/W, = JA = 230 C/W M Package: JA = 180 C/W micro SMD Package: JA = 230.9C/W www.national.com 6 LM78LXX Series Typical Performance Characteristics Maximum Average Power Dissipation (Z Package) Peak Output Current 774414 774416 Dropout Voltage Ripple Rejection 774417 774418 Output Impedance Quiescent Current 774420 774419 7 www.national.com LM78LXX Series Quiescent Current 774421 Equivalent Circuit LM78LXX 774407 www.national.com 8 LM78LXX Series Typical Applications Fixed Output Regulator 774408 *Required if the regulator is located more than 3 from the power supply filter. **See (Note 4) in the electrical characteristics table. Adjustable Output Regulator 774409 VOUT = 5V + (5V/R1 + IQ) R2 5V/R1 > 3 IQ, load regulation (Lr) [(R1 + R2)/R1] (Lr of LM78L05) Current Regulator 774410 IOUT = (VOUT/R1) + IQ >IQ = 1.5mA over line and load changes 5V, 500mA Regulator with Short Circuit Protection 774411 *Solid tantalum. **Heat sink Q1. ***Optional: Improves ripple rejection and transient response. Load Regulation: 0.6% 0 IL 250mA pulsed with tON = 50ms. 9 www.national.com LM78LXX Series 15V, 100mA Dual Power Supply 774412 *Solid tantalum. Variable Output Regulator 0.5V-18V 774413 *Solid tantalum. VOUT = VG + 5V, R1 = (-VIN/IQ LM78L05) VOUT = 5V (R2/R4) for (R2 + R3) = (R4 + R5) A 0.5V output will correspond to (R2/R4) = 0.1 (R3/R4) = 0.9 www.national.com 10 LM78LXX Series Physical Dimensions inches (millimeters) unless otherwise noted NOTES: UNLESS OTHERWISE SPECIFIED 1. EPOXY COATING 2. 63Sn/37Pb EUTECTIC BUMP 3. RECOMMEND NON-SOLDER MASK DEFINED LANDING PAD. 4. PIN A1 IS ESTABLISHED BY LOWER LEFT CORNER WITH RESPECT TO TEXT ORIENTATION. REMAINING PINS ARE NUMBERED COUNTERCLOCKWISE. 5. XXX IN DRAWING NUMBER REPRESENTS PACKAGE SIZE VARIATION WHERE X1 IS PACKAGE WIDTH, X2 IS PACKAGE LENGTH AND X3 IS PACKAGE HEIGHT. 6. REFERENCE JEDEC REGISTRATION MO-211, VARIATION BC. 8-Bump micro SMD NS Package Number BPA08AAB X1 = 1.285mm X2 = 1.285mm X3 = 0.850mm 11 www.national.com LM78LXX Series 8-Bump Thin micro SMD NS Package Number TPA08AAA X1 = 1.285mm X2 = 1.285mm X3 = 0.500mm S.O. Package (M) NS Package Number M08A www.national.com 12 LM78LXX Series Molded Offset TO-92 (Z) NS Package Number Z03A 13 www.national.com LM78LXX Series 3-Terminal Positive Regulators Notes For more National Semiconductor product information and proven design tools, visit the following Web sites at: www.national.com Products Design Support Amplifiers www.national.com/amplifiers WEBENCH(R) Tools www.national.com/webench Audio www.national.com/audio App Notes www.national.com/appnotes Clock and Timing www.national.com/timing Reference Designs www.national.com/refdesigns Data Converters www.national.com/adc Samples www.national.com/samples Interface www.national.com/interface Eval Boards www.national.com/evalboards LVDS www.national.com/lvds Packaging www.national.com/packaging Power Management www.national.com/power Green Compliance www.national.com/quality/green Switching Regulators www.national.com/switchers Distributors www.national.com/contacts LDOs www.national.com/ldo Quality and Reliability www.national.com/quality LED Lighting www.national.com/led Feedback/Support www.national.com/feedback Voltage References www.national.com/vref Design Made Easy www.national.com/easy www.national.com/powerwise Applications & Markets www.national.com/solutions Mil/Aero www.national.com/milaero PowerWise(R) Solutions Serial Digital Interface (SDI) www.national.com/sdi Temperature Sensors www.national.com/tempsensors SolarMagicTM www.national.com/solarmagic PLL/VCO www.national.com/wireless www.national.com/training PowerWise(R) Design University THE CONTENTS OF THIS DOCUMENT ARE PROVIDED IN CONNECTION WITH NATIONAL SEMICONDUCTOR CORPORATION ("NATIONAL") PRODUCTS. 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