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NCP1091 Datasheet

Integrated IEEE 802.3af PoE-PD Interface Controller

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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 (PoEPD) product family and integrate an IEEE
802.3af PoEPD 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 DCDC controller. In addition, the
NCP1091 offers a programmable undervoltage 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 Nchannel
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
highvoltage 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)
OpenDrain Power Good Indicator
130 mA Inrush Current Limit
500 mA Operational Current Limit
Pass Switch Disabling Input for Rear Auxiliary Supply Operation
(NCP1092 Only)
Overtemperature Protection
Industrial Temperature Range 40°C to 85°C with Full Operation up
to 125°C Junction Temperature
0.5 W Hotswap Passswitch
Vertical Nchannel DMOS Passswitch Offers the Robustness of
Discrete MOSFETs
http://onsemi.com
SOIC8
S SUFFIX
CASE 751AZ
TSSOP8
T SUFFIX
CASE 948S
PIN CONFIGURATION
1
INRUSH
VPORTP
CLASS
*
DET
PGOOD
VPORTN
RTN
(Top View)
* NCP1090 = NC
NCP1091 = UVLO
NCP1092 = AUX
8
XXXXX
AYWWG
G
1
XXXXXX = Specific Device Code
A = Assembly Location
Y = Year
WW = Work Week
G = PbFree Package
ORDERING INFORMATION
Device
Package
Shipping
NCP109xxxx
SOIC8
(PbFree)
2500/Tape &
Reel
NCP109xxxx
TSSOP8
(PbFree)
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.
© Semiconductor Components Industries, LLC, 2011
February, 2011 Rev. 2
1
Publication Order Number:
NCP1090/D


  ON Semiconductor Electronic Components Datasheet  

NCP1091 Datasheet

Integrated IEEE 802.3af PoE-PD Interface Controller

No Preview Available !

VPORTP
DET
NCP1090, NCP1091, NCP1092
DETECTION
INTERNAL
SUPPLY
&
VOLTAGE
REFERENCE
THERMAL
SHUTDOWN
UVLO
EXTERNAL
SELECTION
NCP1091 only
UVLO
CLASS
CLASSIFICATION
VPORT
MONITOR
IEEE Interface
Shutdown
(AUX supply priority)
NCP1092 only
AUX
INRUSH
INRUSH &
OPERATIONAL
CURRENT LIMIT
HOT SWAP SWITCH
CONTROL & CURRENT
LIMIT BLOCKS
POWER GOOD
INDICATOR
PGOOD
VPORTN
Figure 1. NCP1090/91/92 Functional Block Diagram
RTN
http://onsemi.com
2


Part Number NCP1091
Description Integrated IEEE 802.3af PoE-PD Interface Controller
Maker ON Semiconductor
Total Page 12 Pages
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