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5962-9166701QYA Datasheet(PDF) 3 Page - National Semiconductor (TI) |
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5962-9166701QYA Datasheet(HTML) 3 Page - National Semiconductor (TI) |
3 / 10 page ![]() Electrical Characteristics — LM2941CT, LM2941CS 5V ≤ V O ≤ 20V, VIN = VO + 5V, CO = 22 µF, unless otherwise specified. Specifications in standard typeface apply for TJ = 25˚C, while those in boldface type apply over the full Operating Temperature Range. Parameter Conditions Typ Limit Units (Note 5) (Limits) Reference Voltage 5 mA ≤ I O ≤ 1A (Note 6) 1.275 1.237/1.211 V(min) 1.313/1.339 V(max) Line Regulation V O +2V ≤ VIN ≤ 26V, IO = 5 mA 4 10 mV/V(max) Load Regulation 50 mA ≤ I O ≤ 1A 7 10 mV/V(max) Output Impedance 100 mADC and 20 mArms 7 m Ω/V f O = 120 Hz Quiescent Current V O +2V ≤ VIN < 26V, IO = 5 mA 10 15 mA(max) V IN = VO + 5V, IO = 1A 30 45/60 mA(max) RMS Output Noise, 10 Hz–100 kHz 0.003 % % of V OUT I O = 5mA Ripple Rejection f O = 120 Hz, 1 Vrms, IL = 100 mA 0.005 0.02 %/V(max) Long Term Stability 0.4 %/1000 Hr Dropout Voltage I O = 1A 0.5 0.8/1.0 V(max) I O = 100 mA 110 200/200 mV(max) Short Circuit Current V IN max = 26V (Note 7) 1.9 1.6 A(min) Maximum Line V O max 1V above nominal VO 55 45 V(min) Transient R O = 100Ω,T ≤ 100 ms Maximum Operational Input Voltage 31 26 V DC Reverse Polarity DC Input Voltage R O = 100Ω,VO ≥ −0.6V −30 −15 V(min) Reverse Polarity Transient Input Voltage T ≤ 100 ms, R O = 100Ω −55 −45 V(min) ON/OFF Threshold Voltage ON I O ≤ 1A 1.30 0.80 V(max) ON/OFF Threshold Voltage OFF I O ≤ 1A 1.30 2.00 V(min) ON/OFF Threshold Current V ON/OFF = 2.0V, IO ≤ 1A 50 100 µA(max) Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating ratings indicate conditions for which the device is in- tended to be functional, but device parameter specifications may not be guaranteed under these conditions. For guaranteed specifications and test conditions, see the Electrical Characteristics. Note 2: A military RETS specification available upon request. For more information about military-aerospace products, see the Mil-Aero web page at http://www.national.com/appinfo/milaero/index.html. Note 3: The maximum power dissipation is a function of TJ(max), θJA, and TA. The maximum allowable power dissipation at any ambient temperature is PD = (TJ- (max) − TA)/θJA. If this dissipation is exceeded, the die temperature will rise above 150˚C and the LM2941 will go into thermal shutdown. For the LM2941T and LM2941CT, the junction-to-ambient thermal resistance ( θJA) is 53˚C/W, and the junction-to-case thermal resistance (θJC) is 3˚C/W. For the LM2941K, θJA is 35˚C/W and θJC is 4˚C/W. The junction-to-ambient thermal resistance of the TO-263 is 73˚C/W, and junction-to-case thermal resistance, θJC is 3˚C. 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 4: All limits guaranteed at room temperature (standard typeface) and at temperature extremes (boldface type). All limits are used to calculate Outgoing Quality Level, and are 100% production tested. Note 5: All limits guaranteed at room temperature (standard typeface) and at temperature extremes (boldface type). All room temperature limits are 100% production tested. All limits at temperature extremes are guaranteed via correlation using standard Statistical Quality Control (SQC) methods. Note 6: The output voltage range is 5V to 20V and is determined by the two external resistors, R1 and R2. See Typical Application Circuit. Note 7: Output current capability will decrease with increasing temperature, but will not go below 1A at the maximum specified temperatures. www.national.com 3 |
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