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产品信息
MAX5971AETI+T
Single-Port, 40W, IEEE 802.3af/at PSE Controller with Integrated MOSFET 热交换电压控制器
General Description
The MAX5971AETI+T MAX5971A is a single-port, power-sourcing equipment (PSE) power controller designed for use in IEEE® 802.3af/at-compliant PSE. This device provides powered device (PD) discovery, classification, current limit, and DC and AC load-disconnect detections. The MAX5971A operates automatically without the need for any software programming and features an integrated power MOSFET and sense resistor. The device also supports new Class 5 and 2-event classification for detection and classification of high-power PDs. The MAX5971A provides up to 40W to a single port (Class 5 enabled) and still provides highcapacitance detection for legacy PDs.
Features MAX5971AETI+T
S IEEE 802.3af/at Compliant
S Up to 40W for Single-Port PSE Applications
S Integrated 0.5I Power MOSFET and Sense Resistor
S PD Detection and Classification
S Programmable Current Limit for Class 5 PDs
S High-Capacitance Detection for Legacy Devices
S Supports Both DC and AC Load Removal Detections
S Current Foldback and Duty Cycle-Controlled Current Limit
S LED Indicator for Port Status
S Direct Fast-Shutdown Control Capability
S Space-Saving, 28-Pin TQFN (5mm x 5mm) Package
Applications MAX5971AETI+T
Single-Port PSE End-Point Applications
Single-Port PSE Power Injectors (Midspan Applications)
Switches/Routers
Industrial Automation Equipment
Wireless LAN Access Point/WiMAX™ Base
Station
