SMSC LAN9512 - Manual (Page 39)

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.
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