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LTC4257IDD-1#PBF
Linear Technology/Analog DevicesRoHS 
RoHS compliant
RoHS compliantPackage 8-WFDFN Exposed Pad
Category PMIC - Power Over Ethernet (PoE) Controllers / PMIC - Power Over Ethernet (PoE) Controllers
Description
LTC4257 Active Tube CMOS power over ethernet controller 3mA 3mm 57V Max 12.95W
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Inventory: 6384
Minimum: 1
Total Price: USD $1.81
Unit Price: USD $1.807863
≥1 USD $1.807863
≥200 USD $0.699776
≥500 USD $0.676144
≥1000 USD $0.663015
Technical Details
Supply Chain
Factory Lead Time 8 Weeks
Lifecycle Status PRODUCTION (Last Updated: 3 months ago)
Physical
Package / Case 8-WFDFN Exposed Pad
Surface Mount YES
Number of Pins 8
Compliance
RoHS Status ROHS3 Compliant
Lead Free Lead Free
Dimensions
Length 3mm
Technical
Operating Temperature -40°C~85°C
Packaging Tube
Published 2005
JESD-609 Code e3
Part Status Active
Moisture Sensitivity Level (MSL) 1 (Unlimited)
Number of Terminations 8
ECCN Code EAR99
Type Controller (PD)
Terminal Finish Matte Tin (Sn)
Subcategory Power Management Circuits
Technology CMOS
Voltage - Supply 57V Max
Terminal Position DUAL
Peak Reflow Temperature (Cel) 260
Number of Functions 1
Terminal Pitch 0.5mm
Depth 3mm
Time@Peak Reflow Temperature-Max (s) 30
Base Part Number LTC4257
Pin Count 8
Number of Channels 1
Adjustable Threshold NO
Power - Max 12.95W
Current - Supply 3mA
Supply Current-Max (Isup) 3mA
Internal Switch(s) Yes
Standards 802.3af (PoE)
Auxiliary Sense No
Alternative Model
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