LTC4266A/LTC4266C
30
4266acfd
For more information www.linear.com/LTC4266A
LINEAR TECHNOLOGY CORPORATION 2011
LT 0615 REV D • PRINTED IN USA
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900
●
FAX: (408) 434-0507
●
www.linear.com/LTC4266A
RELATED PARTS
PART NUMBER DESCRIPTION COMMENTS
LTC4270/LTC4271 12-Port PoE/PoE
+
/LTPoE
++
PSE Controller Transformer Isolation, Supports Type 1, Type 2 and LTPoE
++
PDs
LTC4266 Quad IEEE 802.3at PoE PSE Controller 2-Event Classification, Programmable I
CUT
/I
LIM
LTC4274 Single IEEE 802.3at PoE PSE Controller 2-Event Classification, Programmable I
CUT
/I
LIM
LTC4274A/LTC4274C Single IEEE 802.3at PoE PSE Controller 13W through 90W Support
LTC4265 IEEE 802.3at PD Interface Controller 100V, 1A Internal Switch, 2-Event Classification Recognition
LTC4267 IEEE 802.3af PD Interface with Integrated Switching
Regulator
Internal 100V, 400mA Switch, Dual Inrush Current,
Programmable Class
LTC4269-1 IEEE 802.3at PD Interface with Integrated Flyback
Switching Regulator
2-Event Classification, Programmable Classification, Synchronous
No-Opto Flyback Controller, 50kHz to 250kHz, Auxiliary Support
LTC4269-2 IEEE 802.3at PD Interface with Integrated Forward
Switching Regulator
2-Event Classification,
Programmable Classification, Synchronous
Forward Controller, 100kHz to 500kHz, Auxiliary Support
LTC4278 IEEE 802.3at PD Interface with Integrated Flyback
Switching Regulator
2-Event Classification, Programmable Classification, Synchronous
No-Opto Flyback Controller, 50kHz to 250kHz, 12V Auxiliary Support
One Complete 100base-t Isolated Powered Ethernet IEEE 802.3at Port
TYPICAL APPLICATION
4266AC TA02
1
2
3
4
5
6
7
8
2k
2k
0.1µF
200Ω
200Ω
200Ω
200Ω
U2
U3
U1
HCPL-063L
HCPL-063L
V
DD
CPU
SCL
SDA
GND CPU
INTERRUPT
TO
CONTROLLER
PHY
(NETWORK
PHYSICAL
LAYER
CHIP)
V
EE
SENSE GATE OUT
DGND
SCL
SDAIN
SDAOUT
INT
AGND
R
SENSE
0.25Ω
Q1
T1
1/4
LTC4266
V
DD
ISOLATED
–54V
S1B
ISOLATED
3.3V
0.01µF
200V
0.01µF
200V
0.01µF
200V
0.01µF
200V
75Ω75Ω
75Ω75Ω
RJ45
CONNECTOR
1000pF
2000V
•
•
•
•
•• ••
•
•
•
•
FB1
FB2
Q1: FAIRCHILD IRFM120A OR PHILIPS PHT6NQ10T
U1: FAIRCHILD NC7WZ17
U2, U3: AGILENT HCPL-063L
FB1, FB2: TDK MPZ2012S601A
T1: PULSE H6096NL OR COILCRAFT ETH1-230LD
0.1µF
S1B
0.22µF
100V
X7R
C
BULK
TVS
BULK
SMAJ58A
10Ω
1µF
100V
X7R
0.1µF
SMAJ5.0A
10Ω
10µF