LTC4267 Series

Power over Ethernet IEEE 802.3af PD Interface with Integrated Switching Regulator

Manufacturer: Analog Devices Inc./Maxim Integrated

Catalog

Power over Ethernet IEEE 802.3af PD Interface with Integrated Switching Regulator

Part	Standards	Voltage - Supply	Type	Mounting Type	Current - Supply	Operating Temperature [Max]	Operating Temperature [Min]	Number of Channels [custom]	Supplier Device Package	Power - Max [Max]	Package / Case	Package / Case [x]	Package / Case [y]
Analog Devices Inc./Maxim Integrated LTC4267IGN#PBF	802.3af (PoE)	57 V	Controller (PD) DC/DC	Surface Mount	3 mA	85 °C	-40 C	1	16-SSOP	12.95 W	16-SSOP	0.154 in	3.9 mm
Analog Devices Inc./Maxim Integrated LTC4267CGN#PBF	802.3af (PoE)	57 V	Controller (PD) DC/DC	Surface Mount	3 mA	70 °C	0 °C	1	16-SSOP	12.95 W	16-SSOP	0.154 in	3.9 mm
Analog Devices Inc./Maxim Integrated LTC4267IGN#TRPBF	802.3af (PoE)	57 V	Controller (PD) DC/DC	Surface Mount	3 mA	85 °C	-40 C	1	16-SSOP	12.95 W	16-SSOP	0.154 in	3.9 mm
Analog Devices Inc./Maxim Integrated LTC4267CGN-1#TRPBF	802.3af (PoE)	57 V	Controller (PD) DC/DC	Surface Mount	3 mA	70 °C	0 °C	1	16-SSOP	12.95 W	16-SSOP	0.154 in	3.9 mm
Analog Devices Inc./Maxim Integrated LTC4267IDHC#PBF	802.3af (PoE)	57 V	Controller (PD) DC/DC	Surface Mount	3 mA	85 °C	-40 C	1	16-DFN (5x3)	12.95 W	16-WFDFN Exposed Pad
Analog Devices Inc./Maxim Integrated LTC4267CGN#TRPBF	802.3af (PoE)	57 V	Controller (PD) DC/DC	Surface Mount	3 mA	70 °C	0 °C	1	16-SSOP	12.95 W	16-SSOP	0.154 in	3.9 mm
Analog Devices Inc./Maxim Integrated LTC4267IDHC#TRPBF	802.3af (PoE)	57 V	Controller (PD) DC/DC	Surface Mount	3 mA	85 °C	-40 C	1	16-DFN (5x3)	12.95 W	16-WFDFN Exposed Pad
Analog Devices Inc./Maxim Integrated LTC4267IGN-1#TRPBF	802.3af (PoE)	57 V	Controller (PD) DC/DC	Surface Mount	3 mA	85 °C	-40 C	1	16-SSOP	12.95 W	16-SSOP	0.154 in	3.9 mm
Analog Devices Inc./Maxim Integrated LTC4267CDHC#TRPBF	802.3af (PoE)	57 V	Controller (PD) DC/DC	Surface Mount	3 mA	70 °C	0 °C	1	16-DFN (5x3)	12.95 W	16-WFDFN Exposed Pad
Analog Devices Inc./Maxim Integrated LTC4267CDHC#PBF	802.3af (PoE)	57 V	Controller (PD) DC/DC	Surface Mount	3 mA	70 °C	0 °C	1	16-DFN (5x3)	12.95 W	16-WFDFN Exposed Pad

Catalog

Power over Ethernet IEEE 802.3af PD Interface with Integrated Switching Regulator

Description

The LTC4267 combines an IEEE 802.3af compliant Powered 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 protection, 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 programmable 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.ApplicationsIP Phone Power ManagementWireless Access PointsSecurity CamerasPower over Ethernet