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LM2574HVM-3.3 Scheda tecnica(PDF) 3 Page - National Semiconductor (TI) |
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LM2574HVM-3.3 Scheda tecnica(HTML) 3 Page - National Semiconductor (TI) |
3 / 24 page Absolute Maximum Ratings (Note 1) If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Maximum Supply Voltage LM2574 45V LM2574HV 63V ON /OFF Pin Input Voltage −0.3V ≤ V ≤ +V IN Output Voltage to Ground (Steady State) −1V Minimum ESD Rating (C = 100 pF, R = 1.5 k Ω)2 kV Storage Temperature Range −65˚C to +150˚C Lead Temperature (Soldering, 10 seconds) 260˚C Maximum Junction Temperature 150˚C Power Dissipation Internally Limited Operating Ratings Temperature Range LM2574/LM2574HV −40˚C ≤ T J ≤ +125˚C Supply Voltage LM2574 40V LM2574HV 60V LM2574-3.3, LM2574HV-3.3 Electrical Characteristics Specifications with standard type face are for T J = 25˚C, and those with boldface type apply over full Operating Tempera- ture Range. Symbol Parameter Conditions LM2574-3.3 Units (Limits) LM2574HV-3.3 Typ Limit (Note 2) SYSTEM PARAMETERS (Note 3) Test Circuit Figure 2 V OUT Output Voltage V IN = 12V, ILOAD = 100 mA 3.3 V 3.234 V(Min) 3.366 V(Max) V OUT Output Voltage 4.75V ≤ V IN ≤ 40V, 0.1A ≤ ILOAD ≤ 0.5A 3.3 V LM2574 3.168/3.135 V(Min) 3.432/3.465 V(Max) V OUT Output Voltage 4.75V ≤ V IN ≤ 60V, 0.1A ≤ ILOAD ≤ 0.5A 3.3 LM2574HV 3.168/3.135 V(Min) 3.450/3.482 V(Max) η Efficiency V IN = 12V, ILOAD = 0.5A 72 % LM2574-5.0, LM2574HV-5.0 Electrical Characteristics Specifications with standard type face are for T J = 25˚C, and those with boldface type apply over full Operating Tempera- ture Range. Symbol Parameter Conditions LM2574-5.0 Units (Limits) LM2574HV-5.0 Typ Limit (Note 2) SYSTEM PARAMETERS (Note 3) Test Circuit Figure 2 V OUT Output Voltage V IN = 12V, ILOAD = 100 mA 5 V 4.900 V(Min) 5.100 V(Max) V OUT Output Voltage 7V ≤ V IN ≤ 40V, 0.1A ≤ ILOAD ≤ 0.5A 5 V LM2574 4.800/4.750 V(Min) 5.200/5.250 V(Max) V OUT Output Voltage 7V ≤ V IN ≤ 60V, 0.1A ≤ ILOAD ≤ 0.5A 5 LM2574HV 4.800/4.750 V(Min) 5.225/5.275 V(Max) η Efficiency V IN = 12V, ILOAD = 0.5A 77 % www.national.com 3 |
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