LTC4269 Series

IEEE 802.3at High Power PD and No-Opto Flyback Controller with AUX Support

Manufacturer: Analog Devices Inc./Maxim Integrated

Catalog

IEEE 802.3at High Power PD and No-Opto Flyback Controller with AUX Support

Part	Supplier Device Package	Number of Channels [custom]	Package / Case	Power - Max [Max]	Type	Mounting Type	Current - Supply	Voltage - Supply [Max]	Voltage - Supply [Min]	Operating Temperature [Max]	Operating Temperature [Min]	Standards	Supplied Contents	Function	Utilized IC / Part	Contents
Analog Devices Inc./Maxim Integrated LTC4269CDKD-2#TRPBF	32-DFN (7x4)	1	32-WFDFN Exposed Pad	25.5 W	Controller (PD) DC/DC	Surface Mount	1.35 mA	60 VDC	37.2 V	70 °C	0 °C	802.3af (PoE) 802.3at (PoE+)
Analog Devices Inc./Maxim Integrated DC1335A-A					Power Management								Board(s)	Power over Ethernet (PoE)	LTC4269-1	Board(s)
Analog Devices Inc./Maxim Integrated LTC4269IDKD-2#TRPBF	32-DFN (7x4)	1	32-WFDFN Exposed Pad	25.5 W	Controller (PD) DC/DC	Surface Mount	1.35 mA	60 VDC	37.2 V	85 °C	-40 C	802.3af (PoE) 802.3at (PoE+)
Analog Devices Inc./Maxim Integrated LTC4269IDKD-2#PBF	32-DFN (7x4)	1	32-WFDFN Exposed Pad	25.5 W	Controller (PD) DC/DC	Surface Mount	1.35 mA	60 VDC	37.2 V	85 °C	-40 C	802.3af (PoE) 802.3at (PoE+)
Analog Devices Inc./Maxim Integrated LTC4269CDKD-1#TRPBF	32-DFN (7x4)	1	32-WFDFN Exposed Pad	25.5 W	Controller (PD) DC/DC	Surface Mount	1.35 mA	60 VDC	37.2 V	70 °C	0 °C	802.3af (PoE) 802.3at (PoE+)
Analog Devices Inc./Maxim Integrated DC1335B-B					Power Management									Power over Ethernet (PoE)	LTC4269-1	Board(s)
Analog Devices Inc./Maxim Integrated LTC4269IDKD-1#TRPBF	32-DFN (7x4)	1	32-WFDFN Exposed Pad	25.5 W	Controller (PD) DC/DC	Surface Mount	1.35 mA	60 VDC	37.2 V	85 °C	-40 C	802.3af (PoE) 802.3at (PoE+)
Analog Devices Inc./Maxim Integrated LTC4269IDKD-1#PBF	32-DFN (7x4)	1	32-WFDFN Exposed Pad	25.5 W	Controller (PD) DC/DC	Surface Mount	1.35 mA	60 VDC	37.2 V	85 °C	-40 C	802.3af (PoE) 802.3at (PoE+)

Catalog

IEEE 802.3at High Power PD and No-Opto Flyback Controller with AUX Support

Description

The LTC4269-2 is an integrated Powered Device (PD) interface and power supply controller featuring 2-event classification signaling, flexible auxiliary power options, and a power supply controller suitable for synchronously rectified forward supplies. These features make the LTC4269-2 ideally suited for an IEEE802.3at PD application.The PD controller features a 100V MOSFET that isolates the power supply during detection and classification, and provides 100mA inrush current limit. Also included are power good outputs, an undervoltage/overvoltage lockout and thermal protection. The current mode forward controller allows for synchronous rectification, resulting in an extremely high efficiency, green product. Soft-start for controlled output voltage start-up and fault recovery is included. Programmable frequency over 100kHz to 500kHz allows flexibility in efficiency vs size and low EMI.ApplicationsIP Phones with Large Color ScreensDual Radio 802.11n Access PointsPTZ Security Cameras