LAN8820 Datasheet, PDF (61/83 Pages) Microchip Technology – RGMII 10/100/1000 Ethernet Transceiver

LAN8820/LAN8820I
5.3 Power Consumption
This section details the power consumption of the device as measured during various modes of operation. Power con-
sumption values are provided for both the device-only, and for the device plus Ethernet components. Power dissipation
is impacted by temperature, supply voltage, and external source/sink requirements. All measurements were taken at
+25C.
TABLE 5-1: POWER CONSUMPTION - 1000BASE-T LINKED
Parameter
Typical
Unit
Supply Current (VDD25IO) (@ +2.5V)
15
mA
Supply Current (VDD12CORE, VDD12BIAS, VDD12PLL, VDD12A) (@ +1.2V)
460
mA
External Magnetics Current (@ +2.5V)
197
mA
Total Power Dissipation (Device Only)
589
mW
Total Power Dissipation (Device and Ethernet components)
1081
mW
TABLE 5-2: POWER CONSUMPTION - 100BASE-TX LINKED
Parameter
Typical
Unit
Supply Current (VDD25IO) (@ +2.5V)
5
mA
Supply Current (VDD12CORE, VDD12BIAS, VDD12PLL, VDD12A) (@ +1.2V)
85
mA
External Magnetics Current (@ +2.5V)
57
mA
Total Power Dissipation (Device Only)
115
mW
Total Power Dissipation (Device and Ethernet components)
258
mW
TABLE 5-3: POWER CONSUMPTION - 10BASE-T LINKED
Parameter
Typical
Unit
Supply Current (VDD25IO) (@ +2.5V)
4
mA
Supply Current (VDD12CORE, VDD12BIAS, VDD12PLL, VDD12A) (@ +1.2V)
33
mA
External Magnetics Current (@ +2.5V)
118
mA
Total Power Dissipation (Device Only)
49
mW
Total Power Dissipation (Device and Ethernet components)
344
mW
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DS00001871B-page 61