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LTC4267CDHC 데이터시트(PDF) 1 Page - Linear Integrated Systems

부품명 LTC4267CDHC
상세설명  Power over Ethernet IEEE 802.3af PD Interface with Integrated Switching Regulator
PDF  32 Pages
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제조업체  LINEAR [Linear Integrated Systems]
홈페이지  http://www.linearsystems.com
Logo LINEAR - Linear Integrated Systems

LTC4267CDHC 데이터시트(HTML) 1 Page - Linear Integrated Systems

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LTC4267
1
4267fc
Power over Ethernet
IEEE 802.3af PD Interface with
Integrated Switching Regulator
The LTC
®4267 combines an IEEE 802.3af compliant Pow-
ered Device (PD) interface with a current mode switching
regulator, providing a complete power solution for PD
applications. The LTC4267 integrates the 25kΩ signature
resistor, classification current source, thermal overload pro-
tection, signature disable and power good signal along with
an undervoltage lockout optimized for use with the IEEE-
required diode bridge. The precision dual level input current
limit allows the LTC4267 to charge large load capacitors
and interface with legacy PoE systems.
The current mode switching regulator is designed for
driving a 6V rated N-channel MOSFET and features pro-
grammable slope compensation, soft-start, and constant
frequency operation, minimizing noise even with light
loads. The LTC4267 includes an onboard error amplifier
and voltage reference allowing use in both isolated and
nonisolated configurations.
The LTC4267 is available in space saving, low profile
16-pin SSOP or DFN packages.
■
IP Phone Power Management
■
Wireless Access Points
■
Security Cameras
■
Power over Ethernet
■
Complete Power Interface Port for IEEE 802
®.3af
Powered Device (PD)
■
Onboard 100V, 400mA UVLO Switch
■
Precision Dual Level Inrush Current Limit
■
Integrated Current Mode Switching Regulator
■
Onboard 25kΩ Signature Resistor with Disable
■
Programmable Classification Current (Class 0-4)
■
Thermal Overload Protection
■
Power Good Signal
■
Integrated Error Amplifier and Voltage Reference
■
Low Profile 16-Pin SSOP and 3mm × 5mm DFN
Packages
FEATURES
DESCRIPTIO
APPLICATIO S
TYPICAL APPLICATIO
Class 2 PD with 3.3V Isolated Power Supply
PVCC
PWRGD
NGATE
SENSE
ITH/RUN
VFB
PGND
POUT
VPORTP
RCLASS
SIGDISA
VPORTN
LTC4267
+
+
RCLASS
68.1
Ω
1%
5µF
MIN
10k
470
100k
60.4k
PVCC
PVCC
4.7µF
320µF
MIN
22nF
•
•
PA1133
PS2911
BAS516
TLV431
SBM1040
SMAJ58A
3.3V
1.5A
CHASSIS
HD01
+
–
+
–
HD01
–48V
FROM
DATA PAIR
–48V
FROM
SPARE PAIR
4267 TA01
Si3440
0.1
Ω
6.8k
10k
0.1µF
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners.


유사한 부품 번호 - LTC4267CDHC

제조업체부품명데이터시트상세설명
logo
Linear Technology		 LTC4267CDHC LINER-LTC4267CDHC Datasheet
1Mb / 32P		 Power over Ethernet IEEE 802.3af PD Interface with Integrated Switching Regulator
LTC4267CDHC LINER-LTC4267CDHC Datasheet
1Mb / 32P		 Power over Ethernet IEEE 802.3af PD Interface with Integrated Switching Regulator
LTC4267CDHC-3 LINER-LTC4267CDHC-3 Datasheet
1Mb / 32P		 Power over Ethernet IEEE 802.3af PD Interface with Integrated Switching Regulator
More results

유사한 설명 - LTC4267CDHC

제조업체부품명데이터시트상세설명
logo
Linear Technology		 LTC4267 LINER-LTC4267 Datasheet
1Mb / 32P		 Power over Ethernet IEEE 802.3af PD Interface with Integrated Switching Regulator
LTC4257 LINER-LTC4257 Datasheet
263Kb / 20P		 IEEE 802.3af PD Power over Ethernet Interface Controller
LTC4267-1 LINER-LTC4267-1 Datasheet
903Kb / 32P		 Power over Ethernet IEEE 802.3af PD Interface with Integrated Switching Regulator
LTC4267-3 LINER-LTC4267-3 Datasheet
715Kb / 32P		 Power over Ethernet IEEE 802.3af PD Interface with Integrated Switching Regulator
LTC4267CDHC-3 LINER-LTC4267CDHC-3 Datasheet
1Mb / 32P		 Power over Ethernet IEEE 802.3af PD Interface with Integrated Switching Regulator
LTC4257 LINER-LTC4257_15 Datasheet
269Kb / 20P		 IEEE 802.3af PD Power over Ethernet Interface Controller
LTC4267 LINER-LTC4267_15 Datasheet
2Mb / 32P		 Power over Ethernet IEEE 802.3af PD Interface with Integrated Switching Regulator
LTC4267-1 LINER-LTC4267-1_15 Datasheet
378Kb / 32P		 Power over Ethernet IEEE 802.3af PD Interface with Integrated Switching Regulator
LTC4267-3 LINER-LTC4267-3_15 Datasheet
394Kb / 34P		 Power over Ethernet IEEE 802.3af PD Interface with Integrated Switching Regulator
logo
Maxim Integrated Produc...		 MAX5940 MAXIM-MAX5940 Datasheet
248Kb / 15P		 IEEE 802.3af PD Interface Controller For Power-Over-Ethernet
19-2991; Rev 2; 2/06
More results


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