SLUSCD1C June 2017 – November 2018 TPS2373
PRODUCTION DATA.
Refer to the PDF data sheet for device specific package drawings
The TPS2373 device is a 20-pin integrated circuit that contains all of the features needed to implement a single interface IEEE802.3bt Type-3 ( TPS2373-3) and Type-4 ( TPS2373-4) powered device (PD). Basic functionality supported includes Detection, Hardware Classification, and inrush current limit (200-mA for TPS2373-3 and 335-mA for TPS2373-4) during startup. Enhanced features include the advanced startup function for DC-DC controller, as well as the automatic maintain power signature (MPS).
The TPS2373-3 integrates a low 0.3-Ω internal switch to support Type-3 applications up to 60 W of continuous power sourced by the PSE, allowing beyond 1.2 A (1.55 A minimum current limit) through the PD during normal operation.
Likewise, the TPS2373-4 integrates a low 0.1-Ω internal switch to support Type-4 applications up to 90 W of continuous power sourced by the PSE, allowing up to 1.9 A through the PD during normal operation.
The TPS2373 has a built-in inrush time delay period, for a simple solution to meet the IEEE802.3bt startup requirement.
The TPS2373 features an auxiliary power detect (APD) input, providing priority for an external power adapter.
The TPS2373 contains several protection features such as thermal shutdown, current limit foldback, and a robust 100-V internal switch.