© Semiconductor Components Industries, LLC, 2011
February, 2011 − Rev. 2
1 Publication Order Number:
NCP1090/D
NCP1090, NCP1091,
NCP1092
Integrated IEEE 802.3af
PoE-PD Interface Controller
Description
The NCP1090, NCP1091 and NCP1092 are members of
ON Semiconductor’s high power HIPOt Power over Ethernet
Powered Device (PoE−PD) product family and integrate an IEEE
802.3af PoE−PD interface controller.
The 3 variants all incorporate the required functions as such
detection, classification, under voltage lockout, inrush and operational
current limit. A power good signal has been added to guarantee a good
enabling/disabling of the DC−DC controller. In addition, the
NCP1091 offers a programmable under−voltage while the NCP1092
provide an auxiliary pin for applications supporting auxiliary supplies.
The NCP1090, NCP1091 and NCP1092 are fabricated in a robust
high voltage process and integrates a rugged vertical N−channel
DMOS suitable for the most demanding environments and capable of
withstanding harsh environments such as hot swap and cable ESD
events.
The NCP1090, NCP1091 and NCP1092 complement
ON Semiconductor’s ASSP portfolio in industrial devices and can be
combined with stepper motor drivers, CAN bus drivers and other
high−voltage interfacing devices to offer complete solutions to the
industrial and security market.
Features
• Fully Supports IEEE 802.3af Specifications
• Programmable Classification Current
• Adjustable Under Voltage Lock Out (NCP1091 Only)
• Open−Drain Power Good Indicator
• 130 mA Inrush Current Limit
• 500 mA Operational Current Limit
• Pass Switch Disabling Input for Rear Auxiliary Supply Operation
(NCP1092 Only)
• Over−temperature Protection
• Industrial Temperature Range −40°C to 85°C with Full Operation up
to 125°C Junction Temperature
• 0.5 W Hot−swap Pass−switch
• Vertical N−channel DMOS Pass−switch Offers the Robustness of
Discrete MOSFETs
http://onsemi.com
SOIC−8
S SUFFIX
CASE 751AZ
PIN CONFIGURATION
(Top View)
RTN
PGOOD
*
VPORTP
CLASS
DET
INRUSH
1
VPORTN
TSSOP−8
T SUFFIX
CASE 948S
Device Package Shipping
†
ORDERING INFORMATION
NCP109xxxx SOIC−8
(Pb−Free)
2500/Tape &
Reel
†For information on tape and reel specifications,
including part orientation and tape sizes, please
refer to our Tape and Reel Packaging Specification
Brochure, BRD8011/D.
NCP109xxxx TSSOP−8
(Pb−Free)
2500/Tape &
Reel
* NCP1090 = NC
NCP1091 = UVLO
NCP1092 = AUX
XXXXXX = Specific Device Code
A = Assembly Location
Y = Year
WW = Work Week
G = Pb−Free Package
1
8
XXXXX
AYWWG
G
