Packaging information
| Package | Pins TSSOP (PW) | 28 |
| Operating temperature range (°C) -40 to 125 |
| Package qty | Carrier 50 | TUBE |
Features for the TPS23861
- IEEE 802.3at Quad Port PSE controller
- Auto Detect, classification
- Auto Turn-On and disconnect
- Efficient 255-mΩ sense resistor
- Pin-Out enables Two-Layer PCB
- Kelvin Current Sensing
- 4-Point detection
- Automatic mode – as shipped
- No External terminal setting required
- No Initial I2C communication required
- Semi-Automatic mode – set by
I2C command
- Continuous Identification and Classification
- Meets IEEE 400-ms TPON specification
- Fast-Port shutdown input
- Operates best when used in conjunction with system reference code http://www.ti.com/product/TPS23861/toolssoftware
- Optional I2C control and monitoring
- –40°C to 125°C Temperature range
- TSSOP 28 Package 9.8 mm x 6.6 mm
Description for the TPS23861
The TPS23861 is an easy-to-use, flexible, IEEE802.3at PSE solution. As shipped, it automatically manages four 802.3at ports without the need for any external control.
The TPS23861 automatically detects Powered Devices (PDs) that have a valid signature, determines power requirements according to classification and applies power. Two-event classification is supported for type-2 PDs. The TPS23861 supports DC disconnection and the external FET architecture allows designers to balance size, efficiency and solution cost requirements.
The unique pin-out enables 2-layer PCB designs via logical grouping and clear upper and lower differentiation of I2C and power pins. This delivers best-in-class thermal performance, Kelvin accuracy and low-build cost.
In addition to automatic operation, the TPS23861 supports Semi-Auto Mode via I2C control for precision monitoring and intelligent power management. Compliance with the 400-ms TPON specification is ensured whether in semi-automatic or automatic mode.