LAN9312 datasheet(442/458 Pages) SMSC

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High Performance Two Port 10/100 Managed Ethernet Switch with 32-Bit Non-PCI CPU Interface

Datasheet

Revision 1.2 (04-08-08)

442

SMSC LAN9312

DATASHEET

15.3

Power Consumption

This section details the power consumption of the LAN9312. Power consumption values are provided

for both the device-only, and for the device plus the Ethernet components on ports 1 and 2.

Note 15.4

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

Power Dissipation (Device Only)

550

670

Power Dissipation (Device and Ethernet components)

1245

1435

Ambient Operating Temperature in Still Air (TA)25

Note 15.4

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

Power Dissipation (Device Only)

845

1070

Power Dissipation (Device and Ethernet components)

1130

1385

Ambient Operating Temperature in Still Air (TA)25

Note 15.4

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