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Analog Devices LTC4292 | Demoboard DC2685A
DC2683A and DC2684A-B LTC4291-1/LTC4292 4-Port IEEE 802.3bt PSE
Overview
| Topology | Other Topology |
| Input voltage | 51-57 V |
Description
Demonstration circuit DC2685A is a 4-port IEEE 802.3bt power sourcing equipment (PSE) composed of a DC2684A (daughter card) and DC2683A (motherboard). The DC2685A (kit) is used for evaluation of the LTC4292/LTC4291 PSE chipset. Up to four IEEE 802.3af, IEEE 802.3at, or IEEE 802.3bt powered devices (PDs) can be connected and powered from this system using a single power supply. A DC590 is connected to the DC2685A for I2C interfacing with QuikEval™.This demonstration manual provides a quick start procedure, a DC2684A daughter card overview, a DC2683A mother board overview, schematics, and layout printouts.
Features
- Four PSE Ports
- Two Power Channels per Port
- Fully Compliant IEEE 802.3bt Type 3 and 4 PSE
- Compliant Support for Type 1, 2, 3, and 4 PDs
- Low Power Path Dissipation per Channel
- 150mΩ Sense Resistance
- 30mΩ or Lower MOSFET RDS(ON)
- Chipset Provides Electrical Isolation
- Eliminates Optos and Isolated 3.3V Supply
- Very High Reliability Multipoint PD Detection
- Connection Check Distinguishes Single-Signature and Dual-Signature PDs
- Continuous, Dedicated Per-Port Power and Current Monitoring
- Per-Port Power Policing
- 1MHz I2C Compatible Serial Control Interface
- Pin or I2C Programmable PD Power Up to 71.3W
- Available in a 40-Lead 6mm × 6mm (LTC4292) and 24-Lead 4mm × 4mm (LTC4291-1) QFN Packages
Typical applications
- PoE PSE Switches/Routers / PoE PSE Midspans
More information
Products
| Order Code | Datasheet | Downloads | Status | Product series | f (mm) | Poles | L (mm) | Vaporphase process | H (mm) | Operation Force (Value) (g) | Electrical Life (Cycles) | Actuator Color | Pins (Value) (pcs) | Rows | Gender | Type | IR (mA) | Packaging | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | 418117270902 | SPEC | 6 files | Active i| Production is active. Expected lifetime: >10 years. | WS-DITV Compact THT with Raised Actuator 2.54 mm | – | 2 | 6.08 | not specified | – | 800 | 2000 | White | 2 | – | – | – | – | Tube | |
 | 434123050816 | SPEC | 5 files | Active i| Production is active. Expected lifetime: >10 years. | WS-TASV J-Bend SMT Tact Switch 6.0x3.5 mm | – | – | – | not specified | 5 | 160 | 50000 | Black | – | – | – | – | 50 | Tape and Reel | |
 | 702937000 | SPEC | 3 files | Active i| Production is active. Expected lifetime: >10 years. | WA-SNSR Self-Retaining Spacer | 4.8 | – | 19.1 | – | – | – | – | – | – | – | – | – | – | – | |
 | 62000311121 | SPEC | 6 files | Active i| Production is active. Expected lifetime: >10 years. | WR-PHD 2.00 mm THT Pin Header | – | – | 6 | – | – | – | – | – | 3 | Single | Pin Header | Straight | 2000 | Bag |
| Order Code | Datasheet | |
|---|---|---|
| 418117270902 | SPEC |
| 434123050816 | SPEC |
| 702937000 | SPEC |
| 62000311121 | SPEC |
| Samples |
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| Order Code | Datasheet | Downloads | Status | Product series | f (mm) | Poles | L (mm) | Vaporphase process | H (mm) | Operation Force (Value) (g) | Electrical Life (Cycles) | Actuator Color | Pins (Value) (pcs) | Rows | Gender | Type | IR (mA) | Packaging | Samples |
|---|