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LTC4278CDKD#PBF
Linear Technology/Analog DevicesRoHS 
RoHS compliant
RoHS compliantPackage 32-WFDFN Exposed Pad
Category PMIC - Power Over Ethernet (PoE) Controllers / PMIC - Power Over Ethernet (PoE) Controllers
Description
LTC4278 Active Tube CMOS power over ethernet controller 1.35mA Max 7mm 37.2V~60V 25.5W
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Inventory: 925
Minimum: 1
Total Price: USD $8.68
Unit Price: USD $8.682639
≥1 USD $8.682639
≥10 USD $3.359991
≥100 USD $3.241926
≥500 USD $3.183588
Technical Details
Supply Chain
Factory Lead Time 8 Weeks
Lifecycle Status PRODUCTION (Last Updated: 2 weeks ago)
Physical
Package / Case 32-WFDFN Exposed Pad
Surface Mount YES
Number of Pins 32
Technical
Operating Temperature 0°C~70°C
Packaging Tube
Published 2011
JESD-609 Code e3
Part Status Active
Moisture Sensitivity Level (MSL) 1 (Unlimited)
Number of Terminations 32
ECCN Code EAR99
Type Controller (PD), DC/DC
Terminal Finish Matte Tin (Sn)
Subcategory Switching Regulator or Controllers
Technology CMOS
Voltage - Supply 37.2V~60V
Terminal Position DUAL
Peak Reflow Temperature (Cel) 260
Number of Functions 1
Terminal Pitch 0.4mm
Frequency 100kHz
Time@Peak Reflow Temperature-Max (s) 30
Base Part Number LTC4278
Pin Count 32
Input Voltage-Nom 14V
Number of Channels 1
Nominal Supply Current 1.35mA
Power - Max 25.5W
Current - Supply 1.35mA Max
Control Mode CURRENT-MODE
Control Technique PULSE WIDTH MODULATION
Nominal Input Voltage 60V
Switcher Configuration SINGLE
Internal Switch(s) Yes
Standards 802.3at (PoE+), 802.3af (PoE)
Dimensions
Height Seated (Max) 0.8mm
Length 7mm
Width 4mm
Compliance
Radiation Hardening No
REACH SVHC No SVHC
RoHS Status ROHS3 Compliant
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