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NCP1081 Datasheet(PDF) 2 Page - ON Semiconductor

Part No. NCP1081
Description  Integrated High Power PoE-PD Interface & DC-DC Converter Contr
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Maker  ONSEMI [ON Semiconductor]
Homepage  http://www.onsemi.com
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NCP1081 Datasheet(HTML) 2 Page - ON Semiconductor

 
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NCP1081
http://onsemi.com
2
DC−DC Converter Controller
Current Mode Control
Supports Isolated and Non−isolated DC−DC Converter
Applications
Internal Voltage Regulators
Wide Duty Cycle Range with Internal Slope
Compensation Circuitry
Programmable Oscillator Frequency
Programmable Soft−start Time
(Top View)
PIN DIAGRAM
Exposed
Pad
1
SS
FB
COMP
VDDL
VDDH
GATE
ARTN
nCLASS_AT
CS
OSC
VPORTP
CLASS
UVLO
INRUSH
ILIM1
VPORTN1
RTN
VPORTN2
TEST1
TEST2
ORDERING INFORMATION
Part Number
Package
Shipping Configuration
Temperature Range
NCP1081DEG
TSSOP−20 EP
(Pb−Free)
74 units / Tube
−40°C to 85°C
NCP1081DER2G
TSSOP−20 EP
(Pb−Free)
2500 / Tape & Reel
−40°C to 85°C
†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.
Figure 1. NCP1081 Block Diagram
INTERNAL
SUPPLY
VDDH
INRUSH
ILIM1
CLASSIFICATION
DETECTION
VPORTN1,2
VPORTP
CLASS
INRUSH
ILIM1
VDDH
nCLASS_AT
VDDL
THERMAL
HOT SWAP SWITCH
CONTROL & CURRENT
LIMIT BLOCKS
UVLO
UVLO
RTN
ARTN
1.2 V
CONTROL
OSC
SS
FB
GATE
VDDL
VDDL
VDDL
VDDH
5 K
OSC
VDDL
VDDL
VPORT
MONITOR
20 mA
COMP
CS
5 mA
SHUT
DOWN
CONVERTER
DC−DC
&
BANDGAP


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