Datasheet

16-bit Non-PCI Small Form Factor 10/100 Ethernet Controller with Variable Voltage I/O & HP Auto-MDIX Support
Datasheet
Revision 2.9 (03-01-12) 142 SMSC LAN9220
DATASHEET
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 consumption 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, Tab l e 7 . 4 , and Ta b le 7 . 5.
Note: The current measurements listed below were taken under the following conditions:
Temperature: ........................................................................................................................0
o
C to +70
o
C
Device VDD (VDDVARIO, VDD33REG, VDD33A): .................................................................... Note 7.5
Note: Current consumption is determined by operating frequency, temperature, and supply voltage,
as well as external source/sink requirements.
Note 7.5 The device VDD voltage levels are indicated in the supply current tables below.
Note: Above values do not include the supply current for the magnetics. Based on the recommended
implementation, the maximum supply current needed for the magnetics is 108mA.
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 12 mA
+3.3V Regulator Supply Current VDD33REG 3.6V 85 mA
+3.3V Analog Supply Current VDD33A 3.6V 48 mA
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 9 mA
+3.3V Regulator Supply Current VDD33REG 3.6V 85 mA
+3.3V Analog Supply Current VDD33A 3.6V 48 mA
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 7 mA
+3.3V Regulator Supply Current VDD33REG 3.6V 85 mA
+3.3V Analog Supply Current VDD33A 3.6V 48 mA