LTC4269-1
44
42691fc
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900
●
FAX: (408) 434-0507
●
www.linear.com
© LINEAR TECHNOLOGY CORPORATION 2009
LT 0812 REV C • PRINTED IN USA
RELATED PARTS
PART NUMBER DESCRIPTION COMMENTS
LTC4257-1 IEEE 802.3af PD Interface Controller 100V 400mA Internal Switch, Programmable Classifi cation, Dual
Current Limit
LTC4258 Quad IEEE 802.3af Power over Ethernet Controller DC Disconnect Only, IEEE-Compliant PD Detection and Classifi cation,
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 Classifi cation,
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 Classifi cation,
Autonomous Operation
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 Classifi cation Current to 75mA.
Precision Dual Current Limit with Disable.
LTC4265 IEEE 802.3at High Power PD Interface Controller with
2-Event Classifi cation
2-Event Classifi cation Recognition, 100mA Inrush Current, Single-Class
Programming Resistor, Full Compliance to 802.3at
LTC4266 IEEE 802.3at Quad PSE Controller Supports IEEE 802.3at Type 1 and Type 2 PDs, 0.34 Channel Resistance,
Advanced Power Management, High Reliability 4-Point PD Detection,
Legacy Capacitance Detect
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 Classifi cation, and
Port Current and Voltage Monitoring
LTC4266C Quad IEEE 802af PSE Controller With Programmable I
CUT
/I
LIM
, 1-Event Classifi cation, and Port Current and
Voltage Monitoring
LTC4267-1 IEEE 802.3af PD Interface with an 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 Classifi cation, 300kHz
Constant-Frequency PWM, Optimized for IEEE-Compliant PD System
LTC4268-1 High Power PD with Synchronous No-Opto Flyback
Controller
IEEE 802.3af Compliant, 750mA Hot Swap FET, 92% Power Supply
Effi ciency, Flexible Aux Support, Superior EMI
LTC4269-2 IEEE 802.3af/IEEE 802.3at PD with Synchronous
Forward Controller
2-Event Classifi cation Recognition, 94% Power Supply Effi ciency, Flexible
Aux Support, Superior EMI, 100kHz to 500kHz
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 Classifi cation, 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 Classifi cation, and
Port Current and Voltage Monitoring
LTC4274C Single IEEE 802.3af PSE Controller With Programmable I
CUT
/I
LIM
, 1-Event Classifi cation, and Port Current and
Voltage Monitoring
LTC4278 IEEE 802.3at PD Interface with Integrated Flyback
Switching Regulator
2-Event Classifi cation, Programmable Classifi cation, Synchronous
No-Opto Flyback Controller, 50kHz to 250kHz, 12V Auxillary Support
ThinSOT is a trademark of Linear Technology Corporation.