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LM22670TJE-ADJ Scheda tecnica(PDF) 6 Page - National Semiconductor (TI) |
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LM22670TJE-ADJ Scheda tecnica(HTML) 6 Page - National Semiconductor (TI) |
6 / 20 page Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur, including inoperability and degradation of device reliability and/or performance. Functional operation of the device and/or non-degradation at the Absolute Maximum Ratings or other conditions beyond those indicated in the recommended Operating Ratings is not implied. The recommended Operating Ratings indicate conditions at which the device is functional and should not be operated beyond such conditions. Note 2: The absolute maximum specification of the ‘SW to GND’ applies to DC voltage. An extended negative voltage limit of -10V applies to a pulse of up to 50 ns. Note 3: ESD was applied using the human body model, a 100 pF capacitor discharged through a 1.5 k Ω resistor into each pin. Note 4: Typical values represent most likely parametric norms at the conditions specified and are not guaranteed. Note 5: Min and Max limits are 100% production tested at 25°C. Limits over the operating temperature range are guaranteed through correlation using Statistical Quality Control (SQC) methods. Limits are used to calculate National’s Average Outgoing Quality Level (AOQL). Note 6: The value of θ JA for the TO-263 THIN (TJ) package of 22°C/W is valid if package is mounted to 1 square inch of copper. The θJA value can range from 20 to 30°C/W depending on the amount of PCB copper dedicated to heat transfer. See application note AN-1797 for more information. Note 7: The value of θ JA for the PSOP-8 exposed pad (MR) package of 60°C/W is valid if package is mounted to 1 square inch of copper. The θJA value can range from 42 to 115°C/W depending on the amount of PCB copper dedicated to heat transfer. Typical Performance Characteristics Unless otherwise specified the following conditions apply: Vin = 12V, T J = 25°C. Efficiency vs I OUT and VIN V OUT = 3.3V 30076027 Normalized Switching Frequency vs Temperature 30076004 Current Limit vs Temperature 30076003 Normalized R DS(ON) vs Temperature 30076008 www.national.com 6 |
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