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LM2940SX-9.0 数据表(PDF) 5 Page - Texas Instruments |
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LM2940SX-9.0 数据表(HTML) 5 Page - Texas Instruments |
5 / 35 page LM2940-N, LM2940C www.ti.com SNVS769I – MARCH 2000 – REVISED APRIL 2013 Electrical Characteristics (continued) VIN = VO + 5V, IO = 1A, CO = 22 μF, unless otherwise specified. Boldface limits apply over the entire operating temperature range of the indicated device. All other specifications apply for TA = TJ = 25°C. Output Voltage (VO) 5V 8V Parameter Conditions Typ LM2940-N LM2940- Typ LM2940-N LM2940- Units Limit(1) N/883 Limit(1) N/883 Limit(2) Limit(2) Reverse Polarity RO = 100Ω Transient Input LM2940-N, T ≤ 100 ms −75 −50/−50 −75 −50/−50 VMIN Voltage LM2940-N/883, T ≤ 20 ms −45/−45 −45/−45 LM2940C, T ≤ 1 ms −55 −45/−45 Electrical Characteristics VIN = VO + 5V, IO = 1A, CO = 22 μF, unless otherwise specified. Boldface limits apply over the entire operating temperature range of the indicated device. All other specifications apply for TA = TJ = 25°C. Output Voltage (VO) 9V 10V LM2940-N LM2940-N Units Parameter Conditions Typ Limit Typ Limit (1) (1) Output Voltage 10.5V ≤ VIN ≤ 26V 11.5V ≤ VIN ≤ 26V 5 mA ≤ IO ≤1A 9.00 8.73/8.55 10.00 9.70/9.50 VMIN 9.27/9.45 10.30/10.50 VMAX Line Regulation VO + 2V ≤ VIN ≤ 26V, 20 90 20 100 mVMAX IO = 5 mA Load Regulation 50 mA ≤ IO ≤ 1A LM2940-N 60 90/150 65 100/165 mVMAX LM2940C 60 90 Output Impedance 100 mADC and 20 mArms, 60 65 m Ω fO = 120 Hz Quiescent Current VO +2V ≤ VIN < 26V, IO = 5 mA LM2940-N 10 15/20 10 15/20 mAMAX LM2940C 10 15 VIN = VO + 5V, IO = 1A 30 45/60 30 45/60 mAMAX Output Noise Voltage 10 Hz − 100 kHz, 270 300 μVrms IO = 5 mA Ripple Rejection fO = 120 Hz, 1 Vrms, IO = 100 mA LM2940-N 64 52/46 63 51/45 dBMIN LM2940C 64 52 Long Term 34 36 mV/ Stability 1000 Hr Dropout Voltage IO = 1A 0.5 0.8/1.0 0.5 0.8/1.0 VMAX IO = 100 mA 110 150/200 110 150/200 mVMAX Short Circuit Current See (2) 1.9 1.6 1.9 1.6 AMIN (1) All limits are specified at TA = TJ = 25°C only (standard typeface) or over the entire operating temperature range of the indicated device (boldface type). All limits at TA = TJ = 25°C are 100% production tested. All limits at temperature extremes are specified via correlation using standard Statistical Quality Control methods. (2) Output current will decrease with increasing temperature but will not drop below 1A at the maximum specified temperature. Copyright © 2000–2013, Texas Instruments Incorporated Submit Documentation Feedback 5 Product Folder Links: LM2940-N LM2940C |
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