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LM4995 bảng dữ liệu(PDF) 4 Page - Texas Instruments |
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LM4995 bảng dữ liệu(HTML) 4 Page - Texas Instruments |
4 / 23 page LM4995, LM4995TMBD SNAS329F – APRIL 2006 – REVISED NOVEMBER 2009 www.ti.com Absolute Maximum Ratings (1) Supply Voltage (2) 6.0V Storage Temperature −65°C to +150°C Input Voltage −0.3V to VDD +0.3V Power Dissipation (3) (4) Internally Limited ESD Susceptibility (5) 2000V ESD Susceptibility (6) 200V Junction Temperature 150°C Thermal Resistance θJA (TM) 96.5°C/W θJA (SD) 56°C/W (1) Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is functional, but do not guarantee specific performance limits. Electrical Characteristics state DC and AC electrical specifications under particular test conditions which guarantee specific performance limits. This assumes that the device is within the Operating Ratings. Specifications are not guaranteed for parameters where no limit is given, however, the typical value is a good indication of device performance. (2) If the product is in Shutdown mode and VDD exceeds 6V (to a max of 8V VDD), then most of the excess current will flow through the ESD protection circuits. If the source impedance limits the current to a max of 10mA, then the device will be protected. If the device is enabled when VDD is greater than 5.5V and less than 6.5V, no damage will occur, although operation life will be reduced. Operation above 6.5V with no current limit will result in permanent damage. (3) The maximum power dissipation must be derated at elevated temperatures and is dictated by TJMAX, θJA, and the ambient temperature TA. The maximum allowable power dissipation is PDMAX = (TJMAX–TA)/θJA or the number given in Absolute Maximum Ratings, whichever is lower. For the LM4995, see power derating curves for additional information. (4) Maximum power dissipation in the device (PDMAX) occurs at an output power level significantly below full output power. PDMAX can be calculated using Equation 1 shown in the Application Information section. It may also be obtained from the power dissipation graphs. (5) Human body model, 100pF discharged through a 1.5k Ω resistor. (6) Machine Model, 220pF–240pF discharged through all pins. Operating Ratings Temperature Range TMIN ≤ TA ≤ TMAX −40°C ≤ TA ≤ 85°C Supply Voltage 2.4V ≤ VDD ≤ 5.5V 4 Submit Documentation Feedback Copyright © 2006–2009, Texas Instruments Incorporated Product Folder Links: LM4995 LM4995TMBD |
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