LAN9220 datasheet(129/142 Pages) MICROCHIP

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DS00002417A-page 129

LAN9220

7.5

Worst Case Current Consumption

This section details the worst case current consumption for each device power supply. These values are provided to

assist system designers with proper power supply design. These values cannot be used to determine typical power con-

sumption of the device. The maximum supply current for each power supply is provided for the maximum VDDVARIO

voltage in all supported ranges as detailed in Table 7-3, Table 7-4, and Table 7-5.

Temperature: ................................................................................................................................................0oC to +70oC

Device VDD (VDDVARIO, VDD33REG, VDD33A): ........................................................................................... Note 7-6

Note 7-6

The device VDD voltage levels are indicated in the supply current tables below.

Note:

The current measurements listed below were taken under the following conditions:

Note:

Current consumption is determined by operating frequency, temperature, and supply voltage, as well as

external source/sink requirements.

TABLE 7-3:

MAXIMUM SUPPLY CURRENT CHARACTERISTICS VDDVARIO=3.3V + 300MV

Parameter

Supply Name

Supply Voltage

MAX Current

Units

Variable Voltage Supply Current

VDDVARIO

3.6V

+3.3V Regulator Supply Current

VDD33REG

3.6V

+3.3V Analog Supply Current

VDD33A

3.6V

TABLE 7-4:

MAXIMUM SUPPLY CURRENT CHARACTERISTICS VDDVARIO=2.5V + 10%

Parameter

Supply Name

Supply Voltage

MAX Current

Units

Variable Voltage Supply Current

VDDVARIO

2.75V

+3.3V Regulator Supply Current

VDD33REG

3.6V

+3.3V Analog Supply Current

VDD33A

3.6V

TABLE 7-5:

MAXIMUM SUPPLY CURRENT CHARACTERISTICS VDDVARIO=1.8V + 10%

Parameter

Supply Name

Supply Voltage

MAX Current

Units

Variable Voltage Supply Current

VDDVARIO

1.98V

+3.3V Regulator Supply Current

VDD33REG

3.6V

+3.3V Analog Supply Current

VDD33A

3.6V

Note:

Above values do not include the supply current for the magnetics. Based on the recommended implemen-

tation, the maximum supply current needed for the magnetics is 108mA.

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