Datasheet

LTC4266
30
4266fe
For more information www.linear.com/LTC4266
 LINEAR TECHNOLOGY CORPORATION 2009
LT 0514 REV E • PRINTED IN USA
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone]
●
FAX: [phone]
●
www.linear.com/LTC4266
relAteD pArts
PART NUMBER DESCRIPTION COMMENTS
LT3803 Constant Frequency Current Mode Flyback DC/DC
Controller in ThinSOT™
200kHz Operation, Adjustable Slope Compensation
LTC4258 Quad IEEE 802.3af PoE PSE Controller DC Disconnect Sensing Only
LTC4263 Single IEEE 802.3af PSE Controller Internal FET Switch
LTC4265 IEEE 802.3at PD Interface Controller 100V, 1A Internal Switch, 2-Event Classification Recognition
LTC4266A Quad LTPoE++ PSE Controller Up to 90W, Backwards Compatible with IEEE 802.3af and IEEE 802.3at PDs
LTC4266C Quad IEEE 802.3af PSE Controller Programmable I
CUT
/I
LIM
, 1-Event Classification
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 Integrated Switching Regulator 2-Event Classification, Programmable Classification, Synchronous No-Opto
Flyback Controller, 50kHz to 250kHz
LTC4269-2 IEEE 802.3at PD Interface Integrated Switching Regulator 2-Event Classification, Programmable Classification, Synchronous Forward
Controller, 100kHz to 500kHz
4266 F22
1
2
3
4
5
6
7
8
2k
2k
1µF
100V
X7R
0.1µF
0.1µF
200Ω
200Ω
200Ω
200Ω
U2
U3
U1
HCPL-063L
HCPL-063L
V
DD
CPU
SCL
SDA
GND CPU
INTERRUPT
D
TSS
: DIODES INC SMAJ58A
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
TO
CONTROLLER
PHY
(NETWORK
PHYSICAL
LAYER
CHIP)
0.22µF
100V
X7R
V
EE
SENSE GATE OUT
V
DD
SCL
SDAIN
SDAOUT
INT
R
S
0.25Ω
Q1
T1
1/4
LTC4266
DGND AGND
–48V
ISOLATED
SMAJ58A S1B
ISOLATED
3.3V
ISOLATED
GND
0.01µF
200V
0.01µF
200V
0.01µF
200V
0.01µF
200V
75Ω75Ω
75Ω75Ω
RJ45
CONNECTOR
1000pF
2000V
•
•
•
•
•• ••
•
•
•
•
FB1
FB2
S1B
Figure 22. One Complete Isolated Powered Ethernet Port
typicAl ApplicAtion