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NCP1080
Power over Ethernet Powered Device (PoE-PD)
NCP1080
Integrated PoE-PD & DC-DC
Converter Controller
Introduction
The NCP1080 is a member of ON Semiconductors Power over
Ethernet Powered Device (PoEïPD) product family and represents a
robust, flexible and highly integrated solution targeting demanding
Ethernet applications. It combines in a single unit an enhanced
PoEïPD interface fully supporting the IEEE802.3af specification and
a flexible and configurable DCïDC converter controller.
The NCP1080s exceptional capabilities offer new opportunities for
the design of products powered directly over Ethernet lines,
eliminating the need for local power adaptors or power supplies and
drastically reducing the overall installation and maintenance cost.
ON Semiconductors unique manufacturing process and design
enhancements allow the NCP1080 to deliver up to 13 W of regulated
power to support PoE applications according to the IEEE802.3af
standard. This device leverages the significant cost advantages of
PoEïenabled systems to a broad spectrum of products in markets such
as VoIP phones, wireless LAN access point, security cameras, point of
sales terminals, RFID readers, industrial ethernet devices, etc.
The integrated current mode DCïDC controller facilitates isolated
and nonïisolated flyïback, forward and buck converter topologies. It
has all the features necessary for a flexible, robust and highly efficient
design including programmable switching frequency, duty cycle up to
80 percent, slope compensation, and soft startïup.
The NCP1080 is fabricated in a robust high voltage process and
integrates a rugged vertical Nïchannel DMOS with a low loss current
sense technique suitable for the most demanding environments and
capable of withstanding harsh environments such as hot swap and
cable ESD events.
The NCP1080 complements ON Semiconductors ASSP portfolio
in communications and industrial devices and can be combined with
other highïvoltage interfacing devices to offer complete solutions to
the communication, industrial and security markets.
Features These are PbïFree Devices
Powered Device Interface Fully Supports IEEE802.3af Standard Regulated Power Output up to 13 W Programmable Classification Current Adjustable Under Voltage Lock Out Programmable Inrush Current Limit Programmable Operational Current Limit up to 500 mA Overïtemperature Protection Industrial Temperature Range ï40°C to 85°C with Full
Operation up to 150°C Junction Temperature Vertical Nïchannel DMOS Passïswitch Offers the
Robustness of Discrete MOSFETs with Integrated
Temperature Control
DCïDC Converter Controller Current Mode Control Supports Isolated and Nonïisolated DCïDC Converter
Applications Internal Voltage Regulators Wide Duty Cycle Range with Internal Slope
Compensation Circuitry Programmable Oscillator Frequency Programmable Softïstart Time
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NCP1080 = Specific Device Code
XXXX = Date Code = Assembly Location = Traceability Code
TSSOPï20 EP
DE SUFFIX
CASE 948AB
See detailed ordering and shipping information in the package
dimensions section on page 2 of this data sheet.
ORDERING INFORMATION
