LTC4267-1
PRODUCTIONPower over Ethernet IEEE 802.3af PD Interface with Integrated Switching Regulator
- Part Models
- 4
- 1ku List Price
- Starting From $2.50
Overview
- Complete Power Interface Port for IEEE 802®.3af Powered Device (PD)
- On-board 100V, UVLO Switch
- Precision Dual Level Inrush Current Limit
- Integrated Current Mode Switching Regulator
- On-board 25k 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 Package
The LTC4267-1 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 LTC4267-1 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 LTC4267-1 provides an increased operational current limit, maximizing power available for class 3 applications.
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 LTC4267-1 includes an on-board error amplifier and voltage reference allowing use in both isolated and nonisolated configurations.
The LTC4267-1 is available in a space saving, low profile 16-pin SSOP package.
Applications
- IP Phone Power Management
- Wireless Access Points
- Security Cameras
- Power over Ethernet
Documentation
Data Sheet 1
Technical Articles 1
Video 1
Product Selector Card 2
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.
| Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| LTC4267CGN-1#PBF | 16-Lead SSOP (Narrow 0.15 Inch) | ||
| LTC4267CGN-1#TRPBF | 16-Lead SSOP (Narrow 0.15 Inch) | ||
| LTC4267IGN-1#PBF | 16-Lead SSOP (Narrow 0.15 Inch) | ||
| LTC4267IGN-1#TRPBF | 16-Lead SSOP (Narrow 0.15 Inch) |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Oct 3, 2024 - 24_0235 (QSOP/SSOP PKG) Migrating Bottom Trace Code Marking to Top Side Laser Marking |
||
| LTC4267CGN-1#PBF | PRODUCTION | |
| LTC4267CGN-1#TRPBF | PRODUCTION | |
| LTC4267IGN-1#PBF | PRODUCTION | |
| LTC4267IGN-1#TRPBF | PRODUCTION | |
|
Apr 6, 2022 - 22_0066 Laser Top Mark for 16QSOP Assembled in ADPG [PNG] |
||
| LTC4267CGN-1#PBF | PRODUCTION | |
| LTC4267CGN-1#TRPBF | PRODUCTION | |
| LTC4267IGN-1#PBF | PRODUCTION | |
| LTC4267IGN-1#TRPBF | PRODUCTION | |
This is the most up-to-date revision of the Data Sheet.
Software Resources
Can't find the software or driver you need?
Request a Driver/SoftwareHardware Ecosystem
Tools & Simulations
LTspice 1
Models for the following parts are available in LTspice:
- LTC4267
- LTC4267-1
- LTC4267-3
LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.
Latest Discussions
No discussions on LTC4267-1 yet. Have something to say?
Start a Discussion on EngineerZone®