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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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SC2595 датащи(PDF) 5 Page - Semtech Corporation |
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SC2595 датащи(HTML) 5 Page - Semtech Corporation |
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5 / 12 page  5 ©2009 Semtech Corp. www.semtech.com POWER MANAGEMENT SC2595 Block Diagram OUT + - GND VDDQ VREF VSENSE UVLO + - PVCC AVCC VTT NC Driver Circuit OUT Notes: Notes: Notes: Notes: Notes: (1) Can be used for vias. (2) Power up of AV CC, PVCC and VDDQ supplies. (a) The preferred mode of operation is when the AV CC, PVCC and VDDQ pins are tied together to a single supply. (b) If and when AV CC, PVCC pins are tied to a supply separate to that of the VDDQ supply pin; then the VDDQ supply should lead AV CC, PVCC supply or the VDDQ supply and the AVCC, PVCC supply should rise simultaneously. (c) If the AV CC, PVCC and VDDQ supply pins are connected in a way such that, AVCC, PVCC supplies precedes VDDQ supply; then V TT output precedes VDDQ. This can cause the SDRAM device to latch-up, which may cause permanent damage to the SDRAM. |
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