Two Port 10/100 Managed Ethernet Switch with 16-Bit Non-PCI CPU Interface

Datasheet

15.3Power 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.

Table 15.1 Supply and Current (10BASE-T Full-Duplex)

PARAMETER

TYPICAL

MAXIMUM

 

(@ 3.3V)

(@ 3.6V)

UNIT

 

 

 

 

 

Supply current at 3.3V

165

185

mA

(VDD33A1, VDD33A2, VDD33BIAS, VDD33IO)

 

 

 

 

 

 

 

Power Dissipation (Device Only)

550

670

mW

 

 

 

 

Power Dissipation (Device and Ethernet components)

1245

1435

mW

 

 

 

 

Ambient Operating Temperature in Still Air (T )

25

Note 15.5

oC

A

 

 

 

Table 15.2 Supply and Current (100BASE-TX Full-Duplex)

 

 

 

 

 

PARAMETER

TYPICAL

MAXIMUM

UNIT

(@ 3.3V)

(@ 3.6V)

 

 

 

 

 

 

Supply current

255

295

mA

(VDD33A1, VDD33A2, VDD33BIAS, VDD33IO)

 

 

 

 

 

 

 

Power Dissipation (Device Only)

845

1070

mW

 

 

 

 

Power Dissipation (Device and Ethernet components)

1130

1385

mW

 

 

 

 

Ambient Operating Temperature in Still Air (T )

25

Note 15.5

oC

A

 

 

 

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.

SMSC LAN9311/LAN9311i

443

Revision 1.4 (08-19-08)

 

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