NCP1082DEG【PDF 1/17 页】IC CONV CTLR POE-PD 13W 20-TSSOP

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Sheet目录45

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?Semiconductor Components Industries, LLC, 2013

May, 2013 Rev. 3

Publication Order Number:

NCP1082/D

NCP1082

Integrated PoE-PD & DC-DC

Converter Controller with

9V Auxiliary Supply Support

Introduction

The NCP1082 is a member of ON Semiconductors Power over

Ethernet Powered Device (PoEPD) product family and represents a

robust, flexible and highly integrated solution targeting demanding

Ethernet applications. It combines in a single unit an enhanced

PoEPD interface fully supporting the IEEE 802.3af specification and

a flexible and configurable DCDC converter controller.

The NCP1082s exceptional capabilities enable applications to

smoothly transition from nonPoE to PoE enabled networks by also

supporting power from auxiliary sources such as AC power adapters

and battery supplies, eliminating the need for a second switching

power supply.

ON Semiconductors unique manufacturing process and design

enhancements allow the NCP1082 to deliver up to 13 W of regulated

power to support PoE applications according to the IEEE 802.3af

standard. This device leverages the significant cost advantages of

PoEenabled systems to a broad spectrum of products in markets such

as VoIP phones, wireless LAN access points, security cameras, point

of sales terminals, RFID readers, industrial ethernet devices, etc.

The integrated current mode DCDC controller facilitates isolated

and nonisolated flyback, 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 startup.

The NCP1082 is fabricated in a robust high voltage process and

integrates a rugged vertical Nchannel 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 NCP1082 complements ON Semiconductors ASSP portfolio

in communications and industrial devices and can be combined with

other highvoltage interfacing devices to offer complete solutions to

the communication, industrial and security markets.

Features

" This is a PbFree Device

Powered Device Interface

" Flexible Auxiliary Power Supply Support

" 9 V Front, Rear and Direct Auxiliary Supply

Connections

" Fully Supports IEEE 802.3af 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

" Overtemperature Protection

" Industrial Temperature Range 40?/SPAN>C to 85?/SPAN>C with Full

Operation up to 150癈 Junction Temperature

" 0.6 Ohm Hotswap Passswitch with Low Loss

Current Sense Technique

" Vertical Nchannel DMOS Passswitch Offers the

Robustness of Discrete MOSFETs with Integrated

Temperature Control

http://onsemi.com

NCP1082 = Specific Device Code

XXXX = Date Code

= Assembly Location

= Traceability Code

TSSOP20 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

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