LTC4268IDKD-1#TRPBF Linear Technology, LTC4268IDKD-1#TRPBF Datasheet - Page 48

• Manufacturer Part Number: LTC4268IDKD-1#TRPBF
• Description: IC PD HIGH POWER W/CNTRL 32-DFN
• Manufacturer: Linear Technology
• Type: Power over Ethernet Switch (PoE)r

Specifications of LTC4268IDKD-1#TRPBF

• Applications: Remote Peripherals (Industrial Controls, Cameras, Data Access)
• Internal Switch(s): Yes
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 32-WFDFN Exposed Pad
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

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ThinSOT is a trademark of Linear Technology Corporation.
48
®
1952
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone]
DESCRIPTION
Single Switch Synchronous Forward Counter
Current Mode Flyback DC/DC Controller in ThinSOT™
Adjustable Frequency Current Mode Flyback Controller
Isolate No-Opto Synchronous Flyback Controller With
Wide Input Supply Range
IEEE 802.3af PD Interface Controller
Quad IEEE 802.3af Power over Ethernet Controller
Quad IEEE 802.3af Power over Ethernet Controller
Single IEEE 802.3af Power over Ethernet Controller
High Power Single PSE Controller
High Power PD Interface Controller With 750mA
Current Limit
IEEE 802.3af PD Interface With an Integrated Switching
Regulator
IEEE 802.3af PD Interface With an Integrated Switching
Regulator
●
FAX: [phone]
●
www.linear.com
COMMENTS
Synchronous Controller, Programmable Volt-Sec Clamp, Low Start Current
300kHz Constant Frequency, Adjustable Slope Compensation, Optimized
for High Input Voltage Applications
Slope Comp Overcurrent Protect, Internal/External Clock
Adjustable Switching Frequency, Programmable Undervoltage Lockout,
Accurate Regulation Without Trim, Synchronous for High Effi ciency
100V 400mA Internal Switch, Programmable Classifi cation Dual
Current Limit
DC Disconnect Only, IEEE-Compliant PD Detection and Classifi cation,
Autonomous Operation or I
AC or DC Disconnect IEEE-Compliant PD Detection and Classifi cation,
Autonomous Operation or I
AC or DC Disconnect IEEE-Compliant PD Detection and Classifi cation,
Autonomous Operation or I
Internal Switch, Autonomous Operation, 30W
750mA Internal Switch, Programmable Classifi cation Current to 75mA.
Precision Dual Current Limit With Disable.
100V 400mA Internal Switch, Programmable Classifi cation, 200kHz
Constant Frequency PWM, Interface and Switcher Optimized for IEEE-
Compliant PD System
100V 400mA Internal Switch, Programmable Classifi cation, 300kHz
Constant Frequency PWM, Interface and Switcher Optimized for IEEE-
Compliant PD System
2
2
2
C Control
C Control
C Control
© LINEAR TECHNOLOGY CORPORATION 2007
LT 0109 REV B • PRINTED IN USA
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