LTC4268-1
46
42681fc
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900
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FAX: (408) 434-0507
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www.linear.com
LINEAR TECHNOLOGY CORPORATION 2007
LT 0812 REV C • PRINTED IN USA
PART NUMBER DESCRIPTION COMMENTS
LTC4257-1 IEEE 802.3af PD Interface Controller 100V 400mA Internal Switch, Programmable Classification Dual
Current Limit
LTC4258 Quad IEEE 802.3af Power over Ethernet Controller DC Disconnect Only, IEEE-Compliant PD Detection and Classification,
Autonomous Operation or I
2
C Control
LTC4259A-1 Quad IEEE 802.3af Power over Ethernet Controller AC or DC Disconnect IEEE-Compliant PD Detection and Classification,
Autonomous Operation or I
2
C Control
LTC4263 Single IEEE 802.3af Power over Ethernet Controller AC or DC Disconnect IEEE-Compliant PD Detection and Classification,
Autonomous Operation or I
2
C Control
LTC4263-1 High Power Single PSE Controller Internal Switch, Autonomous Operation, 30W
LTC4264 High Power PD Interface Controller With 750mA
Current Limit
750mA Internal Switch, Programmable Classification Current to 75mA.
Precision Dual Current Limit With Disable.
LTC4266 Quad IEEE 802.3at PoE PSE Controller With Programmable I
CUT
/I
LIM
, 2-Event Classification, and Port Current and
Voltage Monitoring
LTC4266A Quad LTPoE++ PSE Controller Provides Up to 90W. Backwards Compatible with IEEE 802.3af and IEEE
802.3at PDs. With Programmable I
CUT
/I
LIM
, 2-Event Classification, and Port
Current and Voltage Monitoring
LTC4266C Quad IEEE 802.3af PSE Controller With Programmable I
CUT
/I
LIM
, 1-Event Classification, and Port Current and
Voltage Monitoring
LTC4267 IEEE 802.3af PD Interface With an Integrated
Switching Regulator
100V 400mA Internal Switch, Programmable Classification, 200kHz Constant-
Frequency
PWM, Interface and Switcher Optimized for IEEE-Compliant
PD System
LTC4267-1 IEEE 802.3af PD Interface with Integrated Switching
Regulator
Internal 100V, 400mA Switch, Programmable Class, 200kHz Constant-
Frequency PWM
LTC4267-3 IEEE 802.3af PD Interface With an Integrated
Switching Regulator
100V 400mA Internal Switch, Programmable Classification, 300kHz Constant-
Frequency PWM, Interface and Switcher Optimized for IEEE-Compliant
PD System
LTC4269-1 IEEE 802.3af PD Interface with Integrated Flyback
Switching Regulator
2-Event Classification, Programmable Classification, Synchronous No-Opto
Flyback Controller, 50kHz to 250kHz, Aux Support
LTC4269-2 IEEE 802.3af PD Interface with Integrated Forward
Switching Regulator
2-Event Classification, Programmable Classification, Synchronous Forward
Controller, 100kHz to 500kHz, Aux Support
LTC4270/
LTC4271
12-Port PoE/PoE+/LTPoE++™ PSE Controller Transformer Isolation, Supports Type 1,Type 2 and LTPoE++ PDs
LTC4274 Single IEEE 802.3at PoE PSE Controller With Programmable I
CUT
/I
LIM
, 2-Event Classification, and Port Current and
Voltage Monitoring
LTC4274A Single LTPoE++ PSE Controller Provides Up to 90W. Backwards Compatible with IEEE 802.3af and IEEE
802.3at PDs. With Programmable I
CUT
/I
LIM
, 2-Event Classification, and Port
Current and Voltage Monitoring
LTC4274C Single IEEE 802.3af PSE Controller With Programmable I
CUT
/I
LIM
, 1-Event Classification, and Port Current and
Voltage Monitoring
LTC4278 IEEE 802.3af PD Interface with Integrated Flyback
Switching Regulator
2-Event Classification, Programmable Classification, Synchronous No-Opto
Flyback Controller, 50kHz to 250kHz, 12V Auxiliar
y Support
relaTeD parTs
