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SS6383BCSTR датащи(PDF) 6 Page - Silicon Standard Corp. |
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SS6383BCSTR датащи(HTML) 6 Page - Silicon Standard Corp. |
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6 / 8 page ![]() www.SiliconStandard.com 6 of 8 SS6383B(G) 11/07/2004 Rev.2.01 PIN DESCRIPTIONS (Pin numbers refer to TO-252/263) PIN 1: VIN - Input supply pin. It provides main power to create the external reference voltage by divider resistors for regulating VREF and VOUT. PIN 2: GND - Ground pin. PIN 3: VCNTL - Input supply pin. It is used to supply all the internal control circuitry. PIN 4: VREF - Reference voltage input. Pull this pin low to shutdown device. PIN 5: VOUT - Output pin. APPLICATION INFORMATION Layout Consideration As the SS6383B is in either SO-8, TO-252-5 or TO-263-5 packages, it is unable to dissipate heat easily when it operates at high current. To avoid exceeding the maximum junction temperature, a suitable copper area must be used. The large copper area shown at VCNTL pins is able to relieve the thermal dissipation. Using the via to direct heat into the large copper area shown on the bottom layer also helps significantly. All capacitors should be placed as close as possible to the relevant pins. Fig. 9 Top layer for SO-8 Fig. 10 Bottom layer for SO-8 Fig. 11 Placement for SO-8 |
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