The TPS2379 device is an 8-pin integrated circuit
that contains all of the features needed to implement an IEEE802.3at type-2 powered device (PD)
such as Detection, Classification, Type 2 Hardware Classification, and 140-mA inrush current limit
during startup. The low 0.5-Ω internal switch resistance, combined with the enhanced thermal
dissipation of the PowerPAD package, enables this controller to continuously handle up to 0.85 A.
The TPS2379 integrates a low 0.5-Ω internal switch to allow for up to 0.85 A of continuous current
through the PD during normal operation. The TPS2379 device supports higher-power applications
through an external pass transistor. The TPS2379 contains several protection features such as
thermal shutdown, current limit foldback, and a robust 100-V internal switch.
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