Onsemi NCP1094

Description

The NCP1093 and NCP1094 are members of ON Semiconductor’s high power HIPO Power over Ethernet Powered Device (PoE−PD) product family and integrate an IEEE 802.3at PoE−PD interface controller. Both variants incorporate the required functions such as detection, classification, under voltage lockout, inrush and operational current limit. A power good and NCLASS_AT signal have been added to guarantee proper enabling/disabling of the DC−DC controller for both type−I and type−II operation. In addition, the NCP1093 offers a programmable under−voltage while the NCP1094 provides an auxiliary pin for applications supporting auxiliary supplies.The NCP1093 and NCP1094 are fabricated in a robust high voltageprocess and integrate a rugged vertical N−channel DMOS suitable forthe most demanding environments and capable of withstanding harshenvironments such as hot swap and cable ESD events.The NCP1093 and NCP1094 complement ON Semiconductor’sASSP portfolio in industrial devices and can be combined with steppermotor drivers, CAN bus drivers and other high−voltage interfacingdevices to offer complete solutions to the industrial and securitymarket.

Features

• Fully Supports IEEE 802.3af/at Specifications
• Programmable Classification Current
• Support Two Event Classification−Signature
• Adjustable Under Voltage Lock Out (NCP1094 Only)
• Open−Drain Power Good Indicator
• 120 mA Typical Inrush Current Limit
• 680 mA Typical Operational Current Limit
• Pass Switch Disabling Input for Rear Auxiliary Supply Operation(NCP1094 Only)
• Over−temperature Protection
• Industrial Temperature Range −40°C to 85°C with Full Operation up to 125°C Junction Temperature
• 0.6  Hot−swap Pass−switch
• Vertical N−channel DMOS Pass−switch Offers the Robustness ofDiscrete MOSFETs

More information

• Datasheet
• IC product information