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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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LM2940 датащи(PDF) 5 Page - National Semiconductor (TI) |
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LM2940 датащи(HTML) 5 Page - National Semiconductor (TI) |
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5 / 19 page  Electrical Characteristics (Continued) V IN =VO + 5V, IO = 1A, CO = 22 µF, unless otherwise specified. Boldface limits apply over the entire operating tempera- ture range of the indicated device. All other specifications apply for T A =TJ = 25˚C. Output Voltage (V O)5V 8V Units LM2940 LM2940/883 LM2940 LM2940/883 Parameter Conditions Typ Limit Limit Typ Limit Limit (Note 4) (Note 5) (Note 4) (Note 5) Maximum Line R O = 100 Ω V MIN Transient LM2940, T ≤ 100 ms 75 60/60 75 60/60 LM2940/883, T ≤ 20 ms 40/40 40/40 LM2940C, T ≤ 1 ms 5545 5545 Reverse Polarity R O = 100 Ω DC Input Voltage LM2940, LM2940/883 −30 −15/−15 −15/−15 −30 −15/−15 −15/−15 V MIN LM2940C −30 −15 −30 −15 Reverse Polarity R O = 100 Ω Transient Input LM2940, T ≤ 100 ms −75 −50/−50 −75 −50/−50 V MIN Voltage LM2940/883, T ≤ 20 ms −45/−45 −45/−45 LM2940C, T ≤ 1 ms −55 −45/−45 Electrical Characteristics V IN =VO + 5V, IO = 1A, CO = 22 µF, unless otherwise specified. Boldface limits apply over the entire operating tempera- ture range of the indicated device. All other specifications apply for T A =TJ = 25˚C. Output Voltage (V O) 9V 10V Units Parameter Conditions Typ LM2940 Typ LM2940 Limit Limit (Note 4) (Note 4) 10.5V ≤ V IN ≤ 26V 11.5V ≤ V IN ≤ 26V Output Voltage 5 mA ≤ I O ≤1A 9.00 8.73/8.55 10.00 9.70/9.50 V MIN 9.27/9.45 10.30/10.50 V MAX Line Regulation V O +2V ≤ V IN ≤ 26V, 20 90 20 100 mV MAX I O =5 mA Load Regulation 50 mA ≤ I O ≤ 1A LM2940 60 90/150 65 100/165 mV MAX LM2940C 60 90 Output Impedance 100 mADC and 20 mArms, 60 65 m Ω f O = 120 Hz Quiescent V O +2V ≤ V IN < 26V, Current I O =5 mA LM2940 10 15/20 10 15/20 mA MAX LM2940C 10 15 V IN =VO + 5V, IO = 1A 30 45/60 30 45/60 mA MAX Output Noise 10 Hz − 100 kHz, 270 300 µV rms Voltage I O =5 mA Ripple Rejection f O = 120 Hz, 1 Vrms, I O = 100 mA LM2940 64 52/46 63 51/45 dB MIN LM2940C 64 52 Long Term Stability 34 36 mV/ 1000 Hr Dropout Voltage I O = 1A 0.5 0.8/1.0 0.5 0.8/1.0 V MAX I O = 100 mA 110 150/200 110 150/200 mV MAX www.national.com 5 |
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