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LM2611AMF Scheda tecnica(PDF) 3 Page - National Semiconductor (TI) |
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LM2611AMF Scheda tecnica(HTML) 3 Page - National Semiconductor (TI) |
3 / 13 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 14.5V SW Voltage −0. 4V to 36V NFB Voltage +0. 4V to −6V SHDN Voltage −0. 4V to 14.5V Maximum Junction Temperature 125˚C Power Dissipation (Note 2) Internally Limited Lead Temperature 300˚C ESD Susceptibility (Note 3) Human Body Model 2kV Machine Model 200V Operating Conditions Operating Junction Temperature Range (Note 4) −40˚C to +125˚C Storage Temperature −65˚C to +150˚C Supply Voltage 2.7V to 14V θ JA 256˚C/W 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 +85˚C) unless otherwise specified. VIN = 5.0V and IL = 0A, unless otherwise specified. Symbol Parameter Conditions Min (Note 4) Typ (Note 5) Max (Note 4) Units V IN Input Voltage 2.7 14 V I SW Switch Current Limit Grade A 1 1.2 2 A Grade B 0.7 0.9 R DSON Switch ON Resistance Grade A 0.5 0.65 Ω Grade B 0.7 0.9 SHDN TH Shutdown Threshold Device enabled 1.5 V Device disabled 0.50 I SHDN Shutdown Pin Bias Current V SHDN = 0V 0.0 µA V SHDN = 5V 0.0 1.0 NFB Negative Feedback Reference V IN =3V −1.205 −1.23 −1.255 V I NFB NFB Pin Bias Current V NFB =−1.23V −2.7 −4.7 −6.7 µA I q Quiescent Current V SHDN = 5V, Switching 1.8 3.5 mA V SHDN = 5V, Not Switching 270 500 µA V SHDN = 0V 0.024 1 µA %V OUT/ ∆V IN Reference Line Regulation 2.7V ≤ V IN ≤ 14V 0.02 %/V f S Switching Frequency 1.0 1.4 1.8 MHz D MAX Maximum Duty Cycle 82 88 % I L Switch Leakage Not Switching V SW =5V 1µA Note 1: Absolute maximum ratings are limits beyond which damage to the device may occur. Operating Ratings are conditions for which the device is intended to be functional, but device parameter specifications may not be guaranteed. For guaranteed specifications and test conditions, see the Electrical Characteristics. Note 2: The maximum allowable power dissipation is a function of the maximum junction temperature, TJ(MAX), the junction-to-ambient thermal resistance, θJA, and the ambient temperature, TA. See the Electrical Characteristics table for the thermal resistance of various layouts. The maximum allowable power dissipation at any ambient temperature is calculated using: PD (MAX) = (TJ(MAX) −TA)/θJA. Exceeding the maximum allowable power dissipation will cause excessive die temperature, and the regulator will go into thermal shutdown. Note 3: The human body model is a 100 pF capacitor discharged through a 1.5k Ω resistor into each pin. The machine model is a 200pF capacitor discharged directly into each pin. Note 4: All limits guaranteed at room temperature (standard typeface) and at temperature extremes (bold typeface). All room temperature limits are 100% tested or guaranteed through statistical analysis. All limits at temperature extremes are guaranteed via correlation using standard Statistical Quality Control (SQC) methods. All limits are used to calculate Average Outgoing Quality Level (AOQL). Note 5: Typical numbers are at 25˚C and represent the expected value of the parameter. www.national.com 3 |
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