Datenblatt-Suchmaschine für elektronische Bauteile |
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LM3311SQX Datenblatt(PDF) 6 Page - National Semiconductor (TI) |
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LM3311SQX Datenblatt(HTML) 6 Page - National Semiconductor (TI) |
6 / 29 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. V IN 7.5V SW Voltage 21V FB Voltage V IN V C Voltage (Note 2) 1.265V ± 0.3V SHDN Voltage 7.5V FREQ V IN AV IN 12V Amplifier Inputs/Output Rail-to-Rail LV IN 7.5V ADJ Voltage LV IN V OUT LV IN VGH Voltage 31V VGHM Voltage VGH VFLK, VDPM, V DD Voltage 7.5V CE Voltage (Note 2) 1.265 + 0.3V RE Voltage VGH Maximum Junction Temperature 150˚C Power Dissipation(Note 3) Internally Limited Lead Temperature 300˚C Vapor Phase (60 sec.) 215˚C Infrared (15 sec.) 220˚C ESD Susceptibility (Note 4) Human Body Model 2kV Operating Conditions Operating Junction Temperature Range (Note 5) −40˚C to +125˚C Storage Temperature −65˚C to +150˚C Supply Voltage 2.5V to 7V Maximum SW Voltage 20V VGH Voltage Range 5V to 30V Op-Amp Supply, AV IN 4V to 12V LDO Supply, LV IN 2.5V to 7V Electrical Characteristics Specifications in standard type face are for T J = 25˚C and those with boldface type apply over the full Operating Tempera- ture Range (T J = −40˚C to +125˚C). Unless otherwise specified, VIN =LVIN = 2.5V and IL = 0A. Symbol Parameter Conditions Min (Note 5) Typ (Note 6) Max (Note 5) Units I Q Quiescent Current FB = 2V (Not Switching) 690 1100 µA V SHDN =0V 0.04 0.5 8.5 660kHz Switching 2.1 2.8 mA 1.28MHz Switching 3.1 4.0 V FB Feedback Voltage 1.231 1.263 1.287 V %V FB/ ∆V IN Feedback Voltage Line Regulation 2.5V ≤ V IN ≤ 7V -0.26 0.089 0.42 %/V I CL Switch Current Limit (Note 7) (Note 8) 2.0 2.6 A I B FB Pin Bias Current (Note 9) 27 160 nA I SS SS Pin Current 8.5 11 13.5 µA V SS SS Pin Voltage 1.20 1.24 1.28 V V IN Input Voltage Range 2.5 7 V g m Error Amp Transconductance ∆I = 5µA 26 74 133 µmho A V Error Amp Voltage Gain 69 V/V D MAX Maximum Duty Cycle f S = 660kHz 80 91 % f S = 1.28MHz 80 89 f S Switching Frequency FREQ = Ground 440 660 760 kHz FREQ = V IN 1.0 1.28 1.5 MHz I SHDN Shutdown Pin Current V SHDN = 2.5V 8 13.5 µA V SHDN = 0.3V 1 2 I L Switch Leakage Current V SW = 20V 0.03 5 µA R DSON Switch R DSON I SW = 500mA 0.18 0.35 Ω Th SHDN SHDN Threshold Output High, V IN = 2.5V to 7V 1.4 V Output Low, V IN = 2.5V to 7V 0.4 www.national.com 6 |
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