MAX5922AEUI+T by Analog Devices

+48V, Single-Port Network Power Switch For Power-Over-LAN

Status: Active
Series: MAX5922
RoHS: Unknown
Download Datasheet Visit Manufacturer Site View Pricing & Stock
The MAX5922A/B/C is a single-port network power controller with an integrated power MOSFET, operating from a +32V to +60V supply rail. The device is specifically designed for power-sourcing equipment (PSE) in power-over-LAN applications and is fully compliant to the IEEE® 802.3af standard. The MAX5922 provides power devices (PD) discovery, classification, current limit, and other necessary functions for an IEEE 802.3af compliant PSE. The MAX5922 is suitable for PSE function in both switch/router systems where the power is delivered to the load through the signal pairs, and in midspan systems where the power is delivered to the load through the spare pairs. In midspan mode, a detection collision avoidance circuit (MAX5922A/C only) provides the necessary back-off timing to prevent fault detections that happen when two different PSEs try to detect and power the same PD. The MAX5922B/C have a detection disable input that can be connected high to disable the detection/classification functions or connected low to enable them. The MAX5922 features a programmable undervoltage lockout (UVLO) that keeps the device in shutdown until the input voltage exceeds a certain threshold, set to 38V (MAX5922A) or 28V (MAX5922B/C) internally. After successfully discovering and classifying a PD, the MAX5922 enters startup mode. During startup, the MAX5922 limits the output voltage and current slew rate to minimize EMI (electromagnetic interference). The MAX5922 has an integrated 0.45Ω N-channel power MOSFET that provides efficient operation and simplified system design. The MAX5922 monitors and provides current-limit protection to the load at all times. The current limit is programmable using an external current-sensing resistor. The MAX5922 features current-limit foldback and duty-cycle limit to ensure robust operation during load-fault and short-circuit conditions. Fault management allows the part to either latch-off or autorestart after a fault. The MAX5922 provides POK, active-low ZC, and active-low FAULT status signals to indicate output power is good, zero-current fault, and other faults (overcurrent, overtemperature), respectively. The MAX5922 is available in a 28-pin TSSOP package and is rated over the extended -40°C to +85°C temperature range.

Where to Buy

Prices starting from US$7.80

Distributor Stock
Logo for Farnell
Farnell
from US$7.80
538
in stock
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Logo for Newark Electronics
Newark Electronics
from US$9.88
538
in stock
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Logo for element14
element14
from US$10.62
538
in stock
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Features

IEEE 802.3af Compliant
+32V to +60V Wide Operating Input Range
0.45Ω Integrated Power Switch
Power Device (PD) Detection and Classification
100µA PD Leakage Detection Tolerant
Programmable Current Limit
Zero-Current Detection with Status Output
Detection Collision Avoidance Option for Midspan Application
Input Logic Signals Compatible with 1.8V to 5V CMOS Logic
Separate Analog and Digital Grounds with Up to ±4V Offset
Power-Good Status Output
Overcurrent and Overtemperature Protection with Status Outputs
Current-Limit Foldback with Timeout and Duty-Cycle Control
Latch or Autorestart Fault Management

Specifications

Compliance IEEE 802.3af
High Power Mode No
# Channels 1
Port Current Readout No
Load Disconnect DC
Package/Pins TSSOP/28
Oper. Temp. (°C) -40 to +85
BudgetaryPrice (See Notes) 4.19

MAX5922AEUI+T Special Function by Analog Devices

NETWORK POWER SWITCH 1 PORT TSSOP-28

Semiconductors - ICs
> Special Function
Status: Unknown
Series: -
RoHS: Unknown
Download Datasheet Visit Manufacturer Site View Pricing & Stock

Specifications

IC Function Network Power Switch
Supply Voltage Min 32V
Supply Voltage Max 60V
IC Package Type TSSOP
No. of Pins 28Pins
Operating Temperature Min -40°C
Operating Temperature Max 85°C
Product Range -
Automotive Qualification Standard -
MSL MSL 1 - Unlimited
SVHC No SVHC (15-Jan-2018)

Alternative Descriptions

Network Power Switch, 1 Port, Tssop-28 | Newark Electronics
NETWORK POWER SWITCH, 1 PORT, TSSOP-28 | element14

Frequently Asked Questions

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Is the MAX5922AEUI+T RoHS compliant?

This part has not been flagged as RoHS Compliant.

Which authorised distributors for MAX5922AEUI+T have stock available?

Authorised distributors including Newark Electronics, element14 and Farnell have stock available or on a lead time for MAX5922AEUI+T .

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