LM2930 LM2930 3-Terminal Positive Regulator Literature Number: SNVS745C 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 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 j LM2930T-5.0: 5V j LM2930T-8.0: 8V j LM2930S-5.0: 5V j LM2930S-8.0: 8V Connection Diagram (TO-220) Plastic Package 00553908 Side View Order Number LM2930S-5.0 or LM2930S-8.0 See NS Package Number TS3B 00553901 Front View Order Number LM2930T-5.0 or LM2930T-8.0 See NS Package Number T03B (TO-263) Plastic Surface-Mount Package 00553907 Top View (c) 2005 National Semiconductor Corporation DS005539 www.national.com LM2930 3-Terminal Positive Regulator June 2005 LM2930 Absolute Maximum Ratings (Note 1) Reverse Voltage (DC) -6V Internal Power Dissipation (Note 2) If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Operating Temperature Range -40C to +85C Maximum Junction Temperature Input Voltage 125C Storage Temperature Range Operating Range 26V Overvoltage Protection 40V Reverse Voltage (100 ms) Internally Limited -65C to +150C Lead Temp. (Soldering, 10 seconds) 230C -12V Electrical Characteristics (Note 3) LM2930-5.0 VIN=14V, IO=150 mA, Tj=25C (Note 6), C2=10 F, unless otherwise specified Parameter Conditions Typ Output Voltage Line Regulation 5 Tested Design Limit Limit (Note 4) (Note 5) Unit 5.3 VMAX 4.7 VMIN 6VVIN26V, 5 mAIO150 mA 5.5 -40CTJ125C 4.5 VMAX VMIN 9VVIN16V, IO=5 mA 7 25 mVMAX 6VVIN26V, IO=5 mA 30 80 mVMAX 50 mVMAX 4 7 mAMAX 40 mAMAX Load Regulation 5 mAIO150 mA 14 Output Impedance 100 mADC & 10 mArms, 100 Hz-10 kHz 200 Quiescent Current IO=10 mA IO=150 mA 18 Output Noise Voltage 10 Hz-100 kHz 140 Vrms 20 mV/1000 hr 56 dB Long Term Stability Ripple Rejection fO=120 Hz Current Limit 400 Dropout Voltage IO=150 mA 0.32 Output Voltage Under -12VVIN40V, RL=100 Transient Conditions m 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=25C (Note 6), C2=10 F, unless otherwise specified) Parameter Conditions Typ Output Voltage 8 Tested Design Limit Limit (Note 4) (Note 5) 8.5 VMAX 7.5 9.4VVIN26V, 5 mAIO150 mA, VMIN 8.8 -40CTJ125C Line Regulation Unit 7.2 VMAX VMIN 9.4VVIN16V, IO=5 mA 12 50 mVMAX 9.4VVIN26V, IO=5 mA 50 100 mVMAX 50 mVMAX Load Regulation 5 mAIO150 mA 25 Output Impedance 100 mADC & 10 mArms, 100 Hz-10 kHz 300 Quiescent Current IO=10 mA 4 7 mAMAX IO=150 mA 18 40 mAMAX 10 Hz-100 kHz 170 Vrms 30 mV/1000 hr 52 dB Output Noise Voltage Long Term Stability Ripple Rejection www.national.com fO=120 Hz 2 m LM2930 Electrical Characteristics (Note 3) (Continued) LM2930-8.0 (VIN=14V, IO=150 mA, Tj=25C (Note 6), C2=10 F, unless otherwise specified) Tested Parameter Conditions Typ Current Limit 400 Dropout Voltage IO=150 mA 0.32 Output Voltage Under -12VVIN40V, RL=100 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 3C/W and for case to ambient temperature is 50C/W for the TO-220, 73C/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, JA is 50C/W; with 1 square inch of copper area, JA is 37C/W; and with 1.6 or more square inches of copper area, JA is 32C/W. Note 3: All characteristics are measured with a capacitor across the input of 0.1 F and a capacitor across the output of 10 F. All characteristics except noise voltage and ripple rejection ratio are measured using pulse techniques (tW10 ms, duty cycle5%). 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 00553905 *Required if regulator is located far from power supply filter. **COUT must be at least 10 F 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 1 over the expected operating temperature range. Typical Performance Characteristics Output Impedance Overvoltage Supply Current 00553912 00553911 3 www.national.com LM2930 Typical Performance Characteristics (Continued) Output at Reverse Supply Reverse Supply Current 00553913 00553914 Output Voltage (Normalized to 1V at Tj=25C) Output at Overvoltage 00553915 00553916 Dropout Voltage Dropout Voltage 00553917 www.national.com 00553918 4 LM2930 Typical Performance Characteristics (Continued) Low Voltage Behavior High Voltage Behavior 00553919 00553920 Line Transient Response Load Transient Response 00553922 00553921 Peak Output Current Quiescent Current 00553923 00553924 5 www.national.com LM2930 Typical Performance Characteristics (Continued) Quiescent Current Quiescent Current 00553926 00553925 Ripple Rejection Ripple Rejection 00553928 00553927 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. 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. www.national.com 6 LM2930 Definition of Terms (Continued) Maximum Power Dissipation (TO-220) 00553906 Maximum Power Dissipation (TO-263) (Note 2) 00553909 7 www.national.com LM2930 Schematic Diagram 00553910 www.national.com 8 LM2930 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 9 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 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. 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