SMSC LAN9512 User Manual
USB Hub with Integrated 10/100 Ethernet Controller
Datasheet
SMSC LAN9512
39
Revision 1.0 (04-20-09)
DATASHEET
4.3
Power Consumption
This section details the power consumption of the device as measured during various modes of
operation. Power dissipation is determined by temperature, supply voltage, and external source/sink
requirements.
operation. Power dissipation is determined by temperature, supply voltage, and external source/sink
requirements.
4.3.1
Operational Current Consumption & Power Dissipation
Note: All values measured with maximum simultaneous traffic on the Ethernet port and all USB ports.
Note: Magnetic power consumption:
100BASE-TX: ~42mA
10BASE-T: ~104mA
Table 4.1 Operational Current Consumption & Power Dissipation (VDD33IO = VDD33A = 3.3V)
PARAMETER
MIN
TYPICAL
MAX
UNIT
100BASE-TX Full Duplex (USB High-Speed)
Supply current (VDD33IO, VDD33A)
231
mA
Power Dissipation (Device Only)
763
mW
10BASE-T Full Duplex (USB High-Speed)
Supply current (VDD33IO, VDD33A)
188
mA
Power Dissipation (Device Only)
621
mW
10BASE-T Full Duplex (USB Full-Speed)
Supply current (VDD33IO, VDD33A)
152
mA
Power Dissipation (Device Only)
502
mW