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MIC5200 датащи(PDF) 13 Page - Microchip Technology |
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MIC5200 датащи(HTML) 13 Page - Microchip Technology |
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13 / 24 page ![]() 2016 Microchip Technology Inc. DS20005578A-page 13 MIC5200 5.0 THERMAL CONSIDERATIONS 5.1 Layout The MIC5200-x.xYM (8-pin surface mount package) has the following thermal characteristics when mounted on a single-layer copper-clad printed circuit board. Multi-layer boards having a ground plane, wide traces near the pads, and large supply bus lines provide better thermal conductivity. The "worst case" value of 160 °C/W assumes no ground plane, minimum trace widths, and a FR4 material board. 5.2 Nominal Power Dissipation and Die Temperature The MIC5200-x.xYM at a 25°C ambient temperature will operate reliably at up to 625 mW power dissipation when mounted in the "worst case" manner described above. At an ambient temperature of 55°C, the device may safely dissipate 440 mW. These power levels are equivalent to a die temperature of 125°C, the recommended maximum temperature for non-military grade silicon integrated circuits. For MIC5200-x.xYS (SOT-223 package) heat sink characteristics, please refer to Application Hint 17, “Calculating P.C. Board Heat Sink Area for Surface Mount Packages”. PC Board Dielectric JA FR4 160 °C/W Ceramic 120 °C/W |
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