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Two Port 10/100 Managed Ethernet Switch with 16-Bit Non-PCI CPU Interface
Datasheet
SMSC LAN9311/LAN9311i 443 Revision 1.4 (08-19-08)
DATASHEET
15.3 Power Consumption
This section details the power consumption of the LAN9311/LAN9311i. Power consumption values are
provided for both the device-only, and for the device plus the Ethernet components on ports 1 and 2.
Note 15.5 Over the conditions specified in Section 15.2, "Operating Conditions**".
Note: Power dissipation is determined by operating frequency, temperature, and supply voltage, as
well as external source/sink current requirements.
Table 15.1 Supply and Current (10BASE-T Full-Duplex)
PARAMETER
TYPICAL
(@ 3.3V)
MAXIMUM
(@ 3.6V) UNIT
Supply current at 3.3V
(VDD33A1, VDD33A2, VDD33BIAS, VDD33IO)
165 185 mA
Power Dissipation (Device Only) 550 670 mW
Power Dissipation (Device and Ethernet components) 1245 1435 mW
Ambient Operating Temperature in Still Air (T
A
)25Note 15.5
o
C
Table 15.2 Supply and Current (100BASE-TX Full-Duplex)
PARAMETER
TYPICAL
(@ 3.3V)
MAXIMUM
(@ 3.6V)
UNIT
Supply current
(VDD33A1, VDD33A2, VDD33BIAS, VDD33IO)
255 295 mA
Power Dissipation (Device Only) 845 1070 mW
Power Dissipation (Device and Ethernet components) 1130 1385 mW
Ambient Operating Temperature in Still Air (T
A
)25Note 15.5
o
C