Техническая Спецификация для Linear Technology DC1814A-D LTC4274A-4: LTPoE++ (90W) PSE (req. DC2093) DC1814A-D DC1814A-D
Модели
DC1814A-D
LTC4274A/LTC4274C
30
4274acfc
© LINEAR TECHNOLOGY CORPORATION 2011
LT 0812 REV C • PRINTED IN USA
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900
●
FAX: (408) 434-0507
●
www.linear.com
RELATED PARTS
PART NUMBER
DESCRIPTION
COMMENTS
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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
LTC4266A/LTC4266C
Quad IEEE 802.3at PoE PSE Controller
13W through 90W Support
LTC4274
Single IEEE 802.3at PoE PSE Controller
2-Event Classification, Programmable I
CUT
/I
LIM
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
Regulator
Internal 100V, 400mA Switch, Dual Inrush Current,
Programmable Class
Programmable Class
LTC4269-1
IEEE 802.3at PD Interface with Integrated Flyback
Switching Regulator
Switching Regulator
2-Event Classification, Programmable Classification, Synchronous
No-Opto Flyback Controller, 50kHz to 250kHz, Auxiliary Support
No-Opto Flyback Controller, 50kHz to 250kHz, Auxiliary Support
LTC4269-2
IEEE 802.3at PD Interface with Integrated Forward
Switching Regulator
Switching Regulator
2-Event Classification, Programmable Classification, Synchronous
Forward Controller, 100kHz to 500kHz, Auxiliary Support
Forward Controller, 100kHz to 500kHz, Auxiliary Support
LTC4278
IEEE 802.3at PD Interface with Integrated Flyback
Switching Regulator
Switching Regulator
2-Event Classification, Programmable Classification, Synchronous
No-Opto Flyback Controller, 50kHz to 250kHz, 12V Auxiliary Support
No-Opto Flyback Controller, 50kHz to 250kHz, 12V Auxiliary Support
One Complete Isolated Powered Ethernet Port
TYPICAL APPLICATION
4274AC TA02
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
SMBALERT
TO
CONTROLLER
PHY
(NETWORK
PHYSICAL
LAYER
CHIP)
0.22μF
100V
X7R
V
EE
SENSE GATE OUT
V
DD
SCL
SDAIN
SDAOUT
INT
SDAIN
SDAOUT
INT
R
SENSE
0.25Ω
Q1
T1
LTC4274A/
LTC4274C
DGND AGND
ISOLATED
–54V
SMAJ58A
S1B
ISOLATED
3.3V
ISOLATED
GND
0.01μF
200V
0.01μF
200V
0.01μF
200V
0.01μF
200V
75Ω
75Ω
75Ω
75Ω
RJ45
CONNECTOR
1000pF
2000V
2000V
s
s
s
s
s
s
s
s
s
s
s
s
FB1
FB2
S1B