Analog Devices Inc. LT4295 IEEE 802.3bt PD Interfaces
Analog Devices Inc. LT4295 IEEE 802.3bt PD Interfaces feature a forward/flyback controller and is an IEEE 802.3af/at/bt(Draft 2.0)-compliant powered device (PD). The T2P output indicates the number of classification events received during IEEE 802.3bt-compliant mutual identification and negotiation of available power.
The Analog Devices LT4295 series support forward and flyback power supply topologies. The flyback topology supports No-Opto feedback. Auxiliary input voltages can be accurately sensed with just a resistor divider connected to the AUX pin.
Features
- IEEE 802.3af/at/bt(Draft 2.0) powered device (PD) with forward/flyback controller
- Supports up to 71WPDs
- 5-event classification sensing
- Superior surge protection (100V absolute maximum)
- -40°C to +125°C junction temperature range
- >94% end-to-end efficiency with LT4321 ideal bridge
- External hot-swap N-channel MOSFET for lowest power dissipation and highest system efficiency
- No-opto flyback operation
- Auxiliary power support as low as 9V
- Easy mgration of LTPoE++® PDs to IEEE 802.3bt PDs
- Pin compatible with LT4276A/B/C
- 28-lead 4mm × 5mm QFN package
Applications
- High power wireless data systems
- Outdoor security camera equipment
- Commercial and public information displays
- High-temperature
Typical Application
Published: 2017-04-24
| Updated: 2022-03-11