LAN8810 datasheet(61/83 Pages) MICROCHIP

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LAN8810/LAN8810I

DS00001870B-page 61

 2009-2015 Microchip Technology Inc.

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.

Note 5-5

When the external magnetics operate at +2.5V, current consumption remains the same. However,

Ethernet component power consumption will be reduced accordingly.

Note 5-6

When the external magnetics operate at +2.5V, current consumption remains the same. However,

Ethernet component power consumption will be reduced accordingly.

Note 5-7

When the external magnetics operate at +2.5V, current consumption remains the same. However,

Ethernet component power consumption will be reduced accordingly.

TABLE 5-1:

POWER CONSUMPTION - 1000BASE-T LINKED

Parameter

Typical

Unit

Supply Current (VDDVARIO) (@ +3.3V)

Supply Current (VDD12CORE, VDD12BIAS, VDD12PLL, VDD12A) (@ +1.2V)

454

External Magnetics Current (@ +3.3V)

202

Total Power Dissipation (Device Only) (Note 5-5)

665

Total Power Dissipation (Device and Ethernet components) (Note 5-5)

1331

TABLE 5-2:

POWER CONSUMPTION - 100BASE-TX LINKED

Parameter

Typical

Unit

Supply Current (VDDVARIO) (@ +3.3V)

Supply Current (VDD12CORE, VDD12BIAS, VDD12PLL, VDD12A) (@ +1.2V)

External Magnetics Current (@ +3.3V)

Total Power Dissipation (Device Only) (Note 5-6)

177

Total Power Dissipation (Device and Ethernet components) (Note 5-6)

385

TABLE 5-3:

POWER CONSUMPTION - 10BASE-T LINKED

Parameter

Typical

Unit

Supply Current (VDDVARIO) (@ +3.3V)

Supply Current (VDD12CORE, VDD12BIAS, VDD12PLL, VDD12A) (@ +1.2V)

External Magnetics Current (@ +3.3V)

123

Total Power Dissipation (Device Only) (Note 5-7)

107

Total Power Dissipation (Device and Ethernet components) (Note 5-7)

513

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