Texas InstrumentsUnited States
This 8-pin integrated circuit contains all of the features needed to implement an IEEE802.3at type-2 powered device (PD). 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 TPS2378 features an auxiliary power detect (APD) input, providing priority for an external power adapter. It also features a 100-V pass transistor, 140-mA inrush current limiting, type-2 indication, auto-retry fault protection, and an open-drain power-good output.
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View full reportTechnical parameters
| Power | |
|---|---|
| PD power level | 13W, 25W |
| PoE current limit (min) (mA) | 850 |
| Environment and package | |
| Operating temperature range (°C) | -40 to 85 |
| Other | |
| DC/DC control | PD Only |
| Fault response | Auto Retry |
| Features | PG, Primary-side adapter priority, Thermal shutdown |
| PoE inrush limit (mA) (typ) (A) | 0.14 |
| PoE standards supported | 802.3at Type 1 (802.3af), 802.3at Type 2 |
| Rating | Catalog |
| rDS(on) per FET (typ) (mΩ) | 420 |
| Vin (max) (V) | 57 |
| Vin (min) (V) | 0 |