Filter
Top Products
Single-Chip Ethernet Controller with HP Auto-MDIX Support and PCI Interface
Datasheet
Revision 1.22 (09-25-08) 156 SMSC LAN9420/LAN9420i
DATASHEET
5.3 Power Consumption
This section details the power consumption of LAN9420/LAN9420i as measured during various modes
of operation. Power consumption values are provided for both the device-only, and for the device plus
Ethernet components.
Note: Power dissipation is determined by operating frequency, temperature, and supply voltage, as
well as external source/sink requirements.
5.3.1 D0 - Normal Operation with Ethernet Traffic
Table 5.1 D0 - Normal Operation - Supply and Current (Typical)
PARAMETER
TYPICAL
(@ 3.3V)
UNIT
100BASE-TX Full Duplex
Supply current (VDD33IO, VDD33BIAS, VDD33A) 125 mA
Power Dissipation (Device Only) 415 mW
Power Dissipation (Device and Ethernet components) 560 mW
Ambient Operating Temperature in Still Air (T
A
)25
o
C
10BASE-T Full Duplex
Supply current (VDD33IO, VDD33BIAS, VDD33A) 80 mA
Power Dissipation (Device Only) 265 mW
Power Dissipation (Device and Ethernet components) 615 mW
Ambient Operating Temperature in Still Air (T
A
)25
o
C