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| LAN8740A Datasheet, PDF (55/136 Pages) Microchip Technology – Small Footprint MII/RMII 10/100 Energy Efficient Ethernet Transceiver with HP Auto-MDIX and flexPWR® Technology | |||
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LAN8740A/LAN8740Ai
3.9.3 POWER SUPPLY DIAGRAM (1.2 V SUPPLIED BY EXTERNAL SOURCE)
FIGURE 3-19:
POWER SUPPLY DIAGRAM (1.2 V SUPPLIED BY EXTERNAL SOURCE)
LAN8740A/LAN8740Ai
32-VQFN
Core Logic
Ch.2: 3.3 V
Circuitry
Power
Supply
3.3 V
VDDCR
Supply
1.2 V
1 uF
470 pF
VDDCR
Internal
OUT Regulator IN
(Disabled)
VDD2A
CBYPASS
VDDDIO
Supply
1.8 - 3.3 V
VDDIO
CF
CBYPASS
Ch.1: 3.3 V VDD1A
Circuitry
RBIAS
CBYPASS
LED1/
REGOFF
VSS
12.1k
~270 Ohm
10k
ï£ 2013-2015 Microchip Technology Inc.
DS00001987A-page 55
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