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MAX5971A
Single-Port, 40W, IEEE 802.3af/at PSE Controller with Integrated MOSFET
40W, Single-Port, IEEE 802.3af/at-Compliant PSE Controller with Integrated 0.5Ω Power MOSFET and Sense Resistor
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Status
Active: In Production.
Description
The 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, 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 high-capacitance detection for legacy PDs.
The MAX5971A provides input undervoltage lockout (UVLO), input overvoltage lockout, overtemperature detection, output voltage slew-rate limit during startup, and LED status indication.
The MAX5971A is available in a space-saving, 28-pin TQFN (5mm x 5mm) power package, and is rated for the extended (-40°C to +85°C) temperature range.
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Data Sheet
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An evaluation kit is available: MAX5971AEVKIT
Key Features
- IEEE 802.3af/at Compliant
- Up to 40W for Single-Port PSE Applications
- Integrated 0.5Ω Power MOSFET and Sense Resistor
- PD Detection and Classification
- Programmable Current Limit for Class 5 PDs
- High-Capacitance Detection for Legacy Devices
- Supports Both DC and AC Load Removal Detections
- Current Foldback and Duty Cycle-Controlled Current Limit
- LED Indicator for Port Status
- Direct Fast-Shutdown Control Capability
- Space-Saving, 28-Pin TQFN (5mm x 5mm) Package
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Applications/Uses
- Industrial Automation Equipment
- Single-Port PSE End-Point Applications
- Single-Port PSE Power Injectors (Midspan Applications)
- Switches/Routers
- Wireless LAN Access Points/WiMAX™ Base Station
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Key Specifications:
| Power Sourcing Equipment |
| Part Number |
IEEE Compliance |
High Power Mode |
Channels |
Port Current Readout |
Load Disconnect |
Package/Pins |
Smallest Available Pckg.
(mm2) |
Oper. Temp.
(°C) |
Budgetary Price |
| max w/pins |
See Notes |
| MAX5971A |
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Yes |
1 |
No |
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26 |
-40 to +85 |
$3.74 @1k |
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See All Power Sourcing Equipment (8)
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Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific prices and delivery, please see the price and availability page or contact an authorized distributor.
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Diagram
Typical Operating Circuit
Product Guides
Reliability Reports
Software/Models
Ordering Information
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Part Number
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Free
Sample |
Buy |
Status
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Package:
TYPE PINS FOOTPRINT
DRAWING CODE/VAR *
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Temp |
RoHS/Lead-Free?
Materials Analysis
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| MAX5971AETI+
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Active |
TQFN;28 pin;26 mm²
Outline Drawing:21-0140 (PDF)
Land Pattern: 90-0026 (PDF)
Use pkgcode/variation: T2855+6*
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-40°C to +85°C
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RoHS/Lead-Free: Lead Free
Materials Analysis |
| MAX5971AETI+T
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Active |
TQFN;28 pin;26 mm²
Outline Drawing:21-0140 (PDF)
Land Pattern: 90-0026 (PDF)
Use pkgcode/variation: T2855+6*
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-40°C to +85°C
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RoHS/Lead-Free: Lead Free
Materials Analysis |
Notes:
- Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales.
- Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day.
- Part number suffixes: T or T&R = tape and reel; + = RoHS/lead-free; # = RoHS/lead-exempt; -D = drypack; -U/+U on DS parts = cut tape. More: See Full Data Sheet or Maxim Product Naming Conventions.
- * Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.
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Similar Products by Function
| MAX5969A, MAX5969B |
IEEE 802.3af/at-Compliant, Powered Device Interface Controllers with Integrated Power MOSFET |
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More Information
Didn't Find What You Need?
Information Index
Document Ref.: 19-5142
Rev 1;
2010-10-01
This page last modified: 2010-10-01
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