LTC4267IGN-3#PBF
ActivePOWER OVER ETHERNET IEEE 802.3AF PD INTERFACE WITH INTEGRATED 300KHZ SWITCHING REGULATOR
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LTC4267IGN-3#PBF
ActivePOWER OVER ETHERNET IEEE 802.3AF PD INTERFACE WITH INTEGRATED 300KHZ SWITCHING REGULATOR
Deep-Dive with AI
Technical Specifications
Parameters and characteristics for this part
| Specification | LTC4267IGN-3#PBF |
|---|---|
| Auxiliary Sense | False |
| Current - Supply [Max] | 3 mA |
| Internal Switch(s) | False |
| Mounting Type | Surface Mount |
| Number of Channels | 1 |
| Operating Temperature [Max] | 85 °C |
| Operating Temperature [Min] | -40 °C |
| Package / Case | 0.154 in |
| Package / Case | 16-SSOP |
| Package / Case | 3.9 mm |
| Power - Max [Max] | 12.95 W |
| Standards | 802.3af (PoE) |
| Supplier Device Package | 16-SSOP |
| Type | Controller (PD), DC/DC |
| Voltage - Supply [Max] | 57 V |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
| Distributor | Package | Quantity | $ | |
|---|---|---|---|---|
| Digikey | Tube | 1 | $ 7.25 | |
| 10 | $ 4.94 | |||
| 25 | $ 4.35 | |||
| 100 | $ 3.68 | |||
| 250 | $ 3.35 | |||
| 500 | $ 3.15 | |||
| 1000 | $ 2.99 | |||
| 2500 | $ 2.83 | |||
Description
General part information
LTC4267-3 Series
The LTC4267-3 combines an IEEE 802.3af compliant Powered Device (PD) interface with a 300kHz current mode switching regulator, providing a complete power solution for PD applications. The LTC4267-3 integrates the 25k 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 LTC4267-3 provides an increased operational current limit, maximizing power available for class 3 applications.The 300kHz current mode switching regulator provides higher output power or smaller external size compared to its lower frequency counterparts. The LTC4267-3 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 LTC4267-3 includes an onboard error amplifier and voltage reference allowing use in both isolated and nonisolated configurations.The LTC4267-3 is available in a space saving, low profile 16-pin SSOP or DFN packages.ApplicationsIP Phone Power ManagementWireless Access PointsSecurity CamerasPower over Ethernet