ltc4266a Linear Technology Corporation, ltc4266a Datasheet - Page 30

• Manufacturer Part Number: ltc4266a
• Description: Quad Poe/poe+/ltpoe++ Pse Controller
• Manufacturer: Linear Technology Corporation

LTC4266A/LTC4266C
TYPICAL APPLICATION
RELATED PARTS
PART NUMBER
LTC4270/LTC4271
LTC4266
LTC4274
LTC4274A/LTC4274C
LTC4265
LTC4267
LTC4269-1
LTC4269-2
LTC4278
30
INTERRUPT
GND CPU
SDA
V
SCL
DD
CPU
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone]
DESCRIPTION
12-Port PoE/PoE + /LTPoE ++ PSE Controller
Quad IEEE 802.3at PoE PSE Controller
Single IEEE 802.3at PoE PSE Controller
Single IEEE 802.3at PoE PSE Controller
IEEE 802.3at PD Interface Controller
IEEE 802.3af PD Interface with Integrated Switching
Regulator
IEEE 802.3at PD Interface with Integrated Flyback
Switching Regulator
IEEE 802.3at PD Interface with Integrated Forward
Switching Regulator
IEEE 802.3at PD Interface with Integrated Flyback
Switching Regulator
U1
●
0.1μF
FAX: [phone]
200Ω
200Ω
HCPL-063L
HCPL-063L
Figure 17. One Complete Isolated Powered Ethernet Port
●
www.linear.com
U3
U2
200Ω
200Ω
2k
2k
SMAJ58A
0.1μF
ISOLATED
3.3V
100V
X7R
1μF
ISOLATED
–48V
(NETWORK
COMMENTS
Transformer Isolation, Supports Type 1, Type 2 and LTPoE ++ PDs
2-Event Classification, Programmable I
2-Event Classification, Programmable I
13W through 90W Support
100V, 1A Internal Switch, 2-Event Classification Recognition
Internal 100V, 400mA Switch, Dual Inrush Current,
Programmable Class
2-Event Classification, Programmable Classification, Synchronous
No-Opto Flyback Controller, 50kHz to 250kHz, Auxiliary Support
2-Event Classification, Programmable Classification, Synchronous
Forward Controller, 100kHz to 500kHz, Auxiliary Support
2-Event Classification, Programmable Classification, Synchronous
No-Opto Flyback Controller, 50kHz to 250kHz, 12V Auxiliary Support
V
SCL
SDAIN
SDAOUT
INT
PHYSICAL
V
DD
LAYER
CHIP)
EE
PHY
0.25Ω
R
S
SENSE GATE OUT
LTC4266
DGND AGND
1/4
S1B
Q1
ISOLATED
GND
T1
0.22μF
100V
X7R
© LINEAR TECHNOLOGY CORPORA TION 2011
S1B
CUT
CUT
0.01μF
0.01μF
200V
200V
/I
/I
LT 0811 REV A • PRINTED IN USA
LIM
LIM
75Ω
75Ω
FB1
FB2
75Ω
75Ω
1000pF
2000V
0.01μF
0.01μF
200V
200V
CONNECTOR
4266AC F17
4266acfa
RJ45
1
2
3
4
5
6
7
8