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전자부품 데이터시트 검색엔진 |
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전자부품 데이터시트 검색엔진 |
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LAN9730 데이터시트(PDF) 27 Page - Microchip Technology |
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LAN9730 데이터시트(HTML) 27 Page - Microchip Technology |
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27 / 222 page  2012-2015 Microchip Technology Inc. DS00001946A-page 27 LAN9730/LAN9730i 3.0 POWER CONNECTIONS The LAN9730/LAN9730i can be operated with the internal core regulator enabled or disabled. Figure 3-1 illustrates the power connections for operating the device with the internal regulator enabled. Figure 3-2 illustrates the power connec- tions for operating the device with the internal regulator disabled. In this mode, +1.2 V must be supplied to the device by an external source. FIGURE 3-1: POWER CONNECTIONS - INTERNAL REGULATOR ENABLED +3.3 V (IN) +1.2 V (OUT) Internal 1.2 V Core Regulator ENABLED VDD33IO +3.3 V VDD12CORE VDD12CORE Core Logic 50 21 VDD12USBPLL 17 0.1 µF 51 VDD33A 4 52 VDD33IO 0.1 µF 25 VDD33IO VDD33IO 48 35 VDD33IO 0.1 µF 0.1 µF 0.1 µF 0.1 µF 0.1 µF LAN9730/LAN9730i VDD33A 8 VDD33A 15 0.1 µF 56-PIN VQFN 0.5 A 120 Ohm @ 100 MHz CORE_REG_EN VDD12PLL 9 0.1 µF PLL & Ethernet PHY 0.5 A 120 Ohm @ 100 MHz 0.1 µF 0.5 A 120 Ohm @ 100 MHz 12 VSS Exposed Pad HSIC USB PHY VDD12A 0.1 µF 49 0.5 A 120 Ohm @ 100 MHz +3.3 V 0.1 µF 0.1 µF 1 µF |
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