LM2930 3-Terminal Positive Regulator General Description Features The LM2930 3-terminal positive regulator features an ability to source 150 mA of output current with an input-output differential of 0.6V or less. Efficient use of low input voltages obtained, for example, from an automotive battery during cold crank conditions, allows 5V circuitry to be properly powered with supply voltages as low as 5.6V. Familiar regulator features such as current limit and thermal overload protection are also provided. Designed originally for automotive applications, the LM2930 and all regulated circuitry are protected from reverse battery installations or 2 battery jumps. During line transients, such as a load dump (40V) when the input voltage to the regulator can momentarily exceed the specified maximum operating voltage, the regulator will automatically shut down to protect both internal circuits and the load. The LM2930 cannot be harmed by temporary mirror-image insertion. Fixed outputs of 5V and 8V are available in the plastic TO-220 and TO-263 power packages. n n n n n n n n Connection Diagrams Input-output differential less than 0.6V Output current in excess of 150 mA Reverse battery protection 40V load dump protection Internal short circuit current limit Internal thermal overload protection Mirror-image insertion protection P+ Product Enhancement tested Voltage Range LM2930T-5.0: 5V LM2930T-8.0: 8V LM2930S-5.0: 5V LM2930S-8.0: 8V (TO-263) Plastic Surface-Mount Package (TO-220) Plastic Package DS005539-7 DS005539-1 Front View Order Number LM2930T-5.0 or LM2930T-8.0 See NS Package Number T03B Top View DS005539-8 Side View Order Number LM2930S-5.0 or LM2930S-8.0 See NS Package Number TS3B © 1998 National Semiconductor Corporation DS005539 www.national.com LM2930 3-Terminal Positive Regulator April 1998 Absolute Maximum Ratings (Note 1) Reverse Voltage (100 ms) Reverse Voltage (DC) Internal Power Dissipation (Note 2) Operating Temperature Range Maximum Junction Temperature Storage Temperature Range Lead Temp. (Soldering, 10 seconds) If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Input Voltage Operating Range Overvoltage Protection 26V 40V −12V −6V Internally Limited −40˚C to +85˚C 125˚C −65˚C to +150˚C 230˚C Electrical Characteristics (Note 3) LM2930-5.0 VIN = 14V, IO = 150 mA, Tj = 25˚C (Note 6), C2 = 10 µF, unless otherwise specified Tested Parameter Conditions Typ Output Voltage 5 Design Limit Limit (Note 4) (Note 5) 5.3 VMAX 4.7 6V≤VIN≤26V, 5 mA≤IO≤150 mA Unit VMIN 5.5 VMAX Line Regulation −40˚C≤TJ≤125˚C 9V≤VIN≤16V, IO = 5 mA 6V≤VIN≤26V, IO = 5 mA 30 80 mVMAX Load Regulation 5 mA≤IO≤150 mA 14 50 mVMAX 200 4.5 7 25 VMIN mVMAX Output Impedance 100 mADC & 10 mArms, 100 Hz−10 kHz Quiescent Current IO = 10 mA IO = 150 mA 4 7 mAMAX 18 40 mAMAX Output Noise Voltage 10 Hz−100 kHz 140 µVrms 20 mV/1000 hr Long Term Stability Ripple Rejection fO = 120 Hz mΩ 56 Current Limit 400 Dropout Voltage IO = 150 mA Output Voltage Under −12V≤VIN≤40V, RL = 100Ω 0.32 Transient Conditions dB 700 mAMAX 150 mAMIN 0.6 VMAX 5.5 VMAX −0.3 VMIN Electrical Characteristics (Note 3) LM2930-8.0 (VIN = 14V, IO = 150 mA, Tj = 25˚C (Note 6), C2 = 10 µF, unless otherwise specified) Tested Parameter Conditions Typ Output Voltage 8 Design Limit Limit (Note 4) (Note 5) 8.5 VMAX 7.5 9.4V≤VIN≤26V, 5 mA≤IO≤150 mA, Load Regulation VMIN 8.8 −40˚C≤TJ≤125˚C Line Regulation Unit 7.2 VMAX VMIN 9.4V≤VIN≤16V, IO = 5 mA 9.4V≤VIN≤26V, IO = 5 mA 12 50 50 100 mVMAX 5 mA≤IO≤150 mA 25 50 mVMAX 300 mVMAX Output Impedance 100 mADC & 10 mArms, 100 Hz−10 kHz Quiescent Current IO = 10 mA IO = 150 mA 4 7 mAMAX 18 40 mAMAX Output Noise Voltage 10 Hz−100 kHz 170 µVrms 30 mV/1000 hr 52 dB Long Term Stability Ripple Rejection www.national.com fO = 120 Hz 2 mΩ Electrical Characteristics (Note 3) (Continued) LM2930-8.0 (VIN = 14V, IO = 150 mA, Tj = 25˚C (Note 6), C2 = 10 µF, unless otherwise specified) Tested Parameter Conditions Typ Current Limit 400 Dropout Voltage IO = 150 mA Output Voltage Under −12V≤VIN≤40V, RL = 100Ω 0.32 Transient Conditions Design Limit Limit (Note 4) (Note 5) Unit 700 mAMAX 150 mAMIN 0.6 VMAX 8.8 VMAX −0.3 VMIN 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. Electrical Characteristics state DC and AC electrical specifications under particular test conditions which guarantee specific performance limits. This assumes that the device is within the Operating Ratings. Specifications are not guaranteed for parameters where no limit is given, however, the typical value is a good indication of device performance. Note 2: Thermal resistance without a heat sink for junction to case temperature is 3˚C/W and for case to ambient temperature is 50˚C/W for the TO-220, 73˚C/W for the TO-263. If the TO-263 package is used, the thermal resistance can be reduced by increasing the P.C. board copper area thermally connected to the package. Using 0.5 square inches of copper area, θJA is 50˚C/W; with 1 square inch of copper area, θJA is 37˚C/W; and with 1.6 or more square inches of copper area, θJA is 32˚C/W. Note 3: All characteristics are measured with a capacitor across the input of 0.1 µF and a capacitor across the output of 10 µF. All characteristics except noise voltage and ripple rejection ratio are measured using pulse techniques (tW≤10 ms, duty cycle≤5%). Output voltage changes due to changes in internal temperature must be taken into account separately. Note 4: Guaranteed and 100% production tested. Note 5: Guaranteed (but not 100% production tested) over the operating temperature and input current ranges. These limits are not used to calculate outgoing quality levels. Note 6: To ensure constant junction temperature, low duty cycle pulse testing is used. Typical Application DS005539-5 *Required if regulator is located far from power supply filter. **COUT must be at least 10 µF to maintain stability. May be increased without bound to maintain regulation during transients. Locate as close as possible to the regulator. This capacitor must be rated over the same operating temperature range as the regulator. The equivalent series resistance (ESR) of this capacitor should be less than 1Ω over the expected operating temperature range. Typical Performance Characteristics Output Impedance Overvoltage Supply Current Reverse Supply Current DS005539-12 DS005539-11 3 DS005539-13 www.national.com Typical Performance Characteristics Output at Reverse Supply (Continued) Output Voltage (Normalized to 1V at Tj = 25˚C) Output at Overvoltage DS005539-15 DS005539-16 DS005539-14 Dropout Voltage Dropout Voltage Low Voltage Behavior DS005539-17 High Voltage Behavior Line Transient Response DS005539-20 www.national.com DS005539-19 DS005539-18 Load Transient Response DS005539-21 4 DS005539-22 Typical Performance Characteristics Peak Output Current (Continued) Quiescent Current DS005539-23 Quiescent Current Quiescent Current DS005539-24 Ripple Rejection DS005539-25 Ripple Rejection DS005539-26 DS005539-28 DS005539-27 Quiescent Current: That part of the positive input current that does not contribute to the positive load current. The regulator ground lead current. Ripple Rejection: The ratio of the peak-to-peak input ripple voltage to the peak-to-peak output ripple voltage. Temperature Stability of VO: The percentage change in output voltage for a thermal variation from room temperature to either temperature extreme. Definition of Terms Dropout Voltage: The input-output voltage differential at which the circuit ceases to regulate against further reduction in input voltage. Measured when the output voltage has dropped 100 mV from the nominal value obtained at 14V input, dropout voltage is dependent upon load current and junction temperature. Input Voltage: The DC voltage applied to the input terminals with respect to ground. Input-Output Differential: The voltage difference between the unregulated input voltage and the regulated output voltage for which the regulator will operate. Line Regulation: The change in output voltage for a change in the input voltage. The measurement is made under conditions of low dissipation or by using pulse techniques such that the average chip temperature is not significantly affected. Maximum Power Dissipation (TO-220) Load Regulation: The change in output voltage for a change in load current at constant chip temperature. Long Term Stability: Output voltage stability under accelerated life-test conditions after 1000 hours with maximum rated voltage and junction temperature. Output Noise Voltage: The rms AC voltage at the output, with constant load and no input ripple, measured over a specified frequency range. DS005539-6 5 www.national.com Definition of Terms (Continued) Maximum Power Dissipation (TO-263) (Note 2) DS005539-9 Schematic Diagram DS005539-10 www.national.com 6 Physical Dimensions inches (millimeters) unless otherwise noted TO-220 3-Lead Molded Package Order Number LM2930T-5.0 or LM2930T-8.0 NS Package Number T03B 7 www.national.com LM2930 3-Terminal Positive Regulator Physical Dimensions inches (millimeters) unless otherwise noted (Continued) TO-263 3-Lead Plastic Surface Mount Package Order Number LM2930S-5.0 or LM2930S-8.0 NS Package Number TS3B LIFE SUPPORT POLICY NATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF NATIONAL SEMICONDUCTOR CORPORATION. As used herein: 2. A critical component in any component of a life support 1. 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