LT4294
IEEE 802.3bt
PD Interface Controller
FEATURES DESCRIPTION IEEE 802.3af/at/bt (Draft 2.3) Powered Device (PD)
Controller
nn Supports Up to 71W PDs
nn 5-Event Classification Sensing
nn Superior Surge Protection (100V Absolute Maximum)
nn Wide Junction Temperature Range (–40°C to 125°C)
nn Overtemperature Protection
nn Integrated Signature Resistor
nn External Hot Swap N-Channel MOSFET for Lowest
Power Dissipation and Highest System Efficiency
nn Configurable Aux Power Support as Low as 9V
nn Easy Migration Between LTPoE++В® PDs and IEEE
802.3bt PDs
nn Pin Compatible with LT4275A/B/C
nn Available in 10-Lead MSOP and 3mm Г— 3mm DFN
Packages The LTВ®4294 is an IEEE 802.3af/at/bt (Draft 2.3)-compliant
powered device (PD) interface controller. The T2P output
indicates the number of classification events received
during IEEE 802.3bt-compliant mutual identification and
negotiation of available power. nn The LT4294 utilizes an external, low RDS(ON) N-channel …