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National Semiconductor LM109/LM309 5-Volt Regulator handbook

1. LM109 LM309 5 Volt Regulator General Description The LM109 series are complete 5V regulators fabricated on a single silicon chip They are designed for local regulation on digital logic cards eliminating the distribution problems association with single point regulation The devices are available in two standard transistor packages In the Solid kovar TO 5 header it can deliver output currents in ex cess of 200 mA if adequate heat sinking is provided With the TO 3 power package the available output current is greater than 1A The regulators are essentially blowout proof Current limiting is included to limit the peak output current to a safe value In addition thermal shutdown is provided to keep the IC from overheating If internal dissipation becomes too great the regulator will shut down to prevent excessive heating Considerable effort was expended to make these devices easy to use and to minimize the number of external compo nents It is not necessary to bypass the output although this Schematic Diagram April 1998 National Semiconductor does improve transient response somewhat Input bypass ing is needed however if the regulator is located very far from the filter capacitor of the power supply Stability is also achieved by methods that provide very good rejection of load or line transients as are usually seen with TTL logic Although designed primarily as a fixed voltage regulator the output of the LM10
2. FREQUENCY Hz DS007138 18 100k 15 100 125 DS007138 17 www national com Typical Performance Characteristics Continued Maximum Average Maximum Average Ripple Rejection Power Dissipation LM109H Power Dissipation LM309H d INFINITE HEAT SINK _ 100 S E s E S Es lt E Z T 5 2 a Er z s S a e a 0 10 100 1k 10k 100k 1M 50 25 0 25 50 75 100 125 150 0 25 50 75 100 125 FREQUENCY Hz AMBIENT TEMPERATURE C AMBIENT TEMPERATURE C DS007138 21 DS007138 19 DS007138 20 Current Limit Thermally Induced Output Ripple Rejection Characteristics Note 5 Voltage Variation 90 3 SS E p ud to e SE z E ES E K NN ow c S T 150 C x P S z 5 E z 70 E a E z m VIN 10V 2 Se Tj 25 C St f 120H2 2 60 E 0 0 5 10 15 5 10 15 20 25 30 35 0 5 10 15 20 25 30 QUTPUT CURRENT A INPUT OUTPUT VOLTAGE V TIME ms DS007138 24 DS007138 22 DS007138 23 Note 5 Current limiting foldback characteristics are determined by input output differential not by output voltage Input Output Differential V Output Voltage V Output Voltage V 5 075 5 25 5 050 z 2 5 15 z 5 025 s H KI ul EE e KI m 5 000 g 5 05 5 S 5 Z 4 975 A z 2 S 4 95 s S 4 950 5
3. 25 91 0 151 0 161 2X 55 84 4 09 0 495 0 510 12 57 12 95 0 660 0 670 16 76 17 02 g 0 880 0 915 22 35 23 24 7 19 30 19 69 1 477 1 197 29 90 30 40 0 038 0 043 4 __Y _ 2X 9 0 97 1 09 UNCONTROLLED 0 210 0 220 Popes DE KC 0 116 210 0 4 27 4 52 5 33 5 59 l 0 64 X 2 95 X 05425 07429 n SEATING PLANE K024 REV 6 10 80 11 05 Metal Can Package K Order Number LM109K STEEL LM309K STEEL NS Package Number K02A www national com LM109 LM309 5 Volt Regulator Physical Dimensions inches millimeters unless otherwise noted Continued 0 420 0 500 0 285 0 305 10 67 12 70 7 24 7 75 0 980 1 020 E 2x g 0 15170 161 24 89 25 91 MER SET 3 84 4 09 1 78 2 0 495 0 510 12 57 12 95 0 660 0 670 16 76 17 02 g 0 880 0 915 22 35 23 24 g 0 760 0 775 Y 19 30 19 69 1 177 1 197 Ge 29 90 30 40 A 2X BG oi 0 038 0 043 NG 0 97 1 09 2x R 0 168 0 178 0 210 0 220 5 83 5 59 4 27 4 52 0 425 0 435 10 80 11 05 Metal Can Package K Mil Aero Product Order Number LM NS Package Number K02C LIFE SUPPORT POLICY NATIONAL S PRODUCTS ARE NOT AUTHORIZED FOR USE VICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF NATIONAL SEMI CONDUCTOR CORPORATION As used herein 1 Life support devices or systems are devices or sys tems which a are intended for surgical imp
4. 5 mA lt lout S Imax Output Noise Voltage TA 250C 10 Hz lt f lt 100 kHz Long Term Stability 10 20 mV Ripple Rejection T 25 C 50 50 dB Thermal Resistance Note 3 Junction to Case TO 39 Package 15 15 C W TO 3 Package 2 5 2 5 C W Note 1 Absolute Maximum Ratings indicate limits beyond which damage to the device may occur Operating Ratings indicate conditions for which the device is functional but do not guarantee specific performance limits Note 2 Unless otherwise specified these specifications apply 55 C lt T j lt 150 C for the LM109 and 0 C lt Tj lt 125 C for the LM309 Viy 10V and lout 0 1A for the TO 39 package or lour 0 5A for the TO 3 package For the TO 39 package Imax 0 2A and Pmax 2 0W For the TO 3 package Imax 1 0A and Pmax 20W Note 3 Without a heat sink the thermal resistance of the TO 39 package is about 150 C W while that of the TO 3 package is approximately 35 C W With a heat sink the effective thermal resistance can only approach the values specified depending on the efficiency of the sink Note 4 Refer to RETS109H drawing for LM109H or RETS109K drawing for LM109K military specifications Connection Diagrams Order Number LM109H LM109H 883 or LM309H OUTPUT gt dii e N GND DS007138 33 See NS Package Number H03A OUTPUT Metal Can Packages GND CASE x XC S 2 DS007138 34 Order Number LM109K STEEL or LM309K STEEL See
5. response C2 should be used whenever long wires are used to connect to the load or when transient response is critical Note Pin 3 electrically connected to case 3 TIME us DS007138 32 Adjustable Output Regulator INPUT OUTPUT R1 300 5v vgur 2 5Vv 1 Ci 0 22 pF R2 1K DS007138 4 www national com Typical Applications continued High Stability Regulator OUTPUT 10V 1A DI 2N4343 DS007138 5 Regulation better than 0 01 load line and temperature can be obtained tDetermines zener current May be adjusted to minimize thermal drift Solid tantalum Current Regulator INPUT 022 uF OUTPUT DS007138 6 Determines output current If wirewound resistor is used bypass with 0 1 UF www national com 6 Physical Dimensions inches millimeters unless otherwise noted 0 350 0 370 8 899 398 0305 0308 A 0 165 0 185 8 001 8 509 dob 4 191 4 699 1210 0 025 MAX MAX S d UNCONTROLLED 0 635 LEAD DIA 12 70 0 016 0 019 MIN dina j Pm DSTI 0 200 vi 5 080 SEATING PLANE 0 100 2 540 0 029 0 040 0 737 1 016 0 100 0 028 0 034 2 540 0 711 0 864 d 4 Metal Can Package H Order Number LM109H LM109H 883 or LM309H NS Package Number H03A H03A REV B 0 420 0 500 0 325 0 352 10 67 12 70 8 26 8 94 0 060 0 070 1 52 1 78 0 980 1 020 24 89
6. 9 series can be set to voltages above 5V as shown It is also possible to use the circuits as the control element in precision regulators taking advantage of the good current handling capability and the thermal overload protection Features m Specified to be compatible worst case with TTL and DTL m Output current in excess of 1A m Internal thermal overload protection m No external components required OUTPUT Ari GROUND DS007138 1 1999 National Semiconductor Corporation DS007138 www national com Jojejnbay 30A S GOSINT 60LINT Absolute Maximum Ratings note 1 If Military Aerospace specified devices are required please contact the National Semiconductor Sales Office Distributors for availability and specifications Input Voltage Power Dissipation 35V Internally Limited Electrical Characteristics Note 2 Operating Junction Temperature Range LM109 LM309 Storage Temperature Range Lead Temperature Soldering 10 sec 55 C to 150 C 0 C to 125 C 65 C to 150 C 300 C Parameter Conditions Min Output Voltage Tj 25 C 4 7 Line Regulation Tj 25 C 7 10V lt Vin lt 25V Load Regulation Tj 25 C TO 39 Package 5 mA lt lour 0 5A TO 3 Package 5mA lt lour 1 5A Output Voltage 7 40V Vin lt 25V 4 6 5 mA lout S lux P lt Pmax Quiescent Current 7 40V Vin lt 25V Quiescent Current Change 7 40V lt Vin 25V
7. E e 3 gt Z 4 925 SCH AVOUT lt 1 n 4 900 z 3 45 d 75 50 25 0 25 50 75 100 125 150 75 50 25 0 25 50 75 100 125 150 JUNCTION TEMPERATURE C INPUT VOLTAGE V JUNCTION TEMPERATURE C DS007138 26 DS007138 25 DS007138 27 www national com 4 Typical Performance Characteristics Continued Quiescent Current Quiescent Current 5 3 54 Output Voltage Noise 1 0 100 Tjz 2876 5 3 5 2 5 1 NOISE DENSITY 0 1 5 0 49 49 QUIESCENT CURRENT mA QUIESCENT CURRENT mA Mtr 50 25 0 25 50 75 100 125 150 15 JUNCTION TEMPERATURE C DS007138 28 Line Transient Response Load Transient Re DEVIATION mV OUTPUT VOLTAGE 20 INPUT VOLTAGE V TOTAL NOISE uV RMS NOISE DENSITY uV Hz TOTAL NOISE 0 01 1 10 106 1k 10k 100k FREQUENCY BANDWIDTH Hz DS007138 29 DS007138 30 sponse INPUT VOLTAGE CHANGE V OUTPUT VOLTAGE DEVIATION mV DUTPUT LOAD CURRENT mA TIME us DS007138 31 Typical Applications Fixed 5V Regulator OUTPUT INPUT SV dh 1 0 uF SOLID TANTALUM C2 gt 19 F SOLID TANTALUM DS007138 2 Required if regulator is located more than 4 from power supply filter capacitor tAlthough no output capacitor is needed for stability it does improve transient
8. NS Package Number K02A Order Number LM109K 883 See NS Package Number K02C www national com Application Hints 1 Bypass the input of the LM109 to ground with 2 0 2 uF ceramic or solid tantalum capacitor if main filter capaci tor is more than 4 inches away Avoid insertion of regulator into live socket if input voltage is greater than 10V The output will rise to within 2V of the unregulated input if the ground pin does not make contact possibly damaging the load The LM109 may also be damaged if a large output capacitor is charged up then discharged through the internal clamp zener when the ground pin makes contact The output clamp zener is designed to absorb tran sients only It will not clamp the output effectively if a fail ure occurs in the internal power transistor structure Ze ner dynamic impedance is 4Q Continuous RMS current into the zener should not exceed 0 5A Paralleling of LM109s for higher output current is not recommended Current sharing will be almost nonexist ent leading to a current limit mode operation for devices with the highest initial output voltage The current limit devices may also heat up to the thermal shutdown point 175 C Long term reliability cannot be guaranteed under these conditions Crowbar Overvoltage Protection Input Crowbar DS007138 8 5 Preventing latchoff for loads connected to negative voltage If the output of the LM109 is pulled negative by a hig
9. h cur rent supply so that the output pin is more than 0 5V negative with respect to the ground pin the LM109 can latch off This can be prevented by clamping the ground pin to the output pin with a germanium or Schottky diode as shown A silicon diode 1N4001 at the output is also needed to keep the positive output from being pulled too far negative The 10 resistor will raise Vour by 0 05V VIN VOUT ro w 4 leue uma COM VIN VouT DS007138 7 Output Crowbar DS007138 9 Zener is internal to LM109 Q1 must be able to withstand 7A continuous current if fusing is not used at regulator input LM109 bond wires will fuse at currents above 7A tQ2 is selected for surge capability Consideration must be given to filter capacitor size transformer impedance and fuse blowing time ttTrip point is 7 5V Typical Performance Characteristics Maximum Average Power Dissipation LM109K Maximum Average Power Dissipation LM309K Output Impedance 10 0 50 25 0 50 75 100 125 150 AMBIENT TEMPERATURE C DS007138 16 0 25 24 TO 3 20 100 INFINITE EJ E S HEAT SINK s Sey z z 16 e E d INFINITE Ae Ch HEAT SI Z 2 10 Ww 5 i S AAT E o OB JN El 28 Cy o a 2 HEAT Siny NO HEAT SINK d r 5D AMBIENT TEMPERATURE C 100 1k 10k 1M
10. lant into the body or b support or sustain life and whose fail ure to perform when properly used in accordance with instructions for use provided in the labeling can be reasonably expected to result in a significant injury to the user 2 UNCONTROLLED LEAD DIA 0 030 0 085 0 76 X 2 16 V SEATING PLANE KO2C REV B 109K 883 AS CRITICAL COMPONENTS IN LIFE SUPPORT DE A critical component is any component of a life support device or system whose failure to perform can be rea sonably expected to cause the failure of the life support device or system or to affect its safety or effectiveness National Semiconductor National Semiconductor N Corporation Europe Americas Fax 49 0 1 80 530 85 86 Tel 1 800 272 9959 Email europe support nsc com Fax 1 800 737 7018 Deutsch Tel 49 0 1 80 530 85 85 Email support nsc com English Tel 49 0 1 80 532 78 32 Fran ais Tel 49 0 1 80 532 93 58 www national com Italiano Tel 49 0 1 80 534 16 80 National Semiconductor Japan Ltd Tel 81 3 5639 7560 Fax 81 3 5639 7507 National Semiconductor Asia Pacific Customer Response Group Tel 65 2544466 Fax 65 2504466 Email sea support nsc com National does not assume any responsibility for use of any circuitry described no circuit patent licenses are implied and National reserves the right at any time without notice to change said circuitry and specifications

National Semiconductor LM109/LM309 5-Volt Regulator handbook

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