Mfr Part #:

MAX5991AETP

Mfr Name: Analog Devices / Maxim Integrated

The MAX5991AETP from Analog Devices is a highly integrated power management IC for Power over Ethernet (PoE) applications. It supports IEEE 802.3af/at standards and offers high efficiency.

✓ Total Stock: 4,543 pcs

$ Price Range: $1.57

MAX5991AETP Available from 1 distributor

✓ Authorised

✓ Non-Authorised

Distributor		Stock	Pricing	MOQ	PKG	Lead Time	Date Code	On Order Quantity	On Order Delivery
Romaks Technologies ✓ Non-Authorised Inventory information	4,543 pcs On Request	4543 pcs	On Request	1	On Request	On Request	On Request	On Request	On Request

MAX5991AETP Specifications Quick View

Most important parameters for selection – full specs in datasheet.

SELECT ALL

Category	New Products
Manufacturer Name	Analog Devices / Maxim Integrated
Efficiency	90%
Input Voltage	48V
Output Voltage	3.3V
SVHC Present	Not Present

View Similar Products (0)

MAX5991AETP Description

Short technical summary and product information.

The MAX5991AETP is a power management integrated circuit designed for Power over Ethernet (PoE) applications, manufactured by Analog Devices (Maxim Integrated). This device is commonly used in network equipment such as IP phones, wireless access points, and security cameras. It complies with IEEE 802.3af and 802.3at standards, ensuring interoperability with a wide range of PoE-enabled devices.

The IC integrates a PWM controller, MOSFET drivers, and detection circuitry to manage power delivery over Ethernet cables. It converts the 48V PoE input voltage to lower voltages, typically 3.3V or 5V, required by the connected device. Key features include high efficiency, typically exceeding 90%, an adjustable current limit, undervoltage lockout (UVLO), and integrated thermal protection which includes thermal shutdown and overcurrent protection mechanisms.

Its compact TQFN package makes it suitable for space-constrained designs. The MAX5991AETP is ideal for applications requiring reliable power delivery over Ethernet cables, including industrial automation equipment and IoT devices. Proper heat dissipation and adherence to PCB layout guidelines are recommended for optimal performance and reliability.

MAX5991AETP Quick Information

Product Type: Power Over Ethernet (PoE) Controller

Series: MAX5991

Canonical Name: MAX5991AETP Power Over Ethernet Controller

Subcategory: Power Management PMIC

MAX5991AETP Compliance

RoHS Status: RoHS Compliant

Moisture Sensitivity Level (MSL): 1 Unlimited

REACH Status: REACH Unaffected

MAX5991AETP Estimated Pricing

Qty	Low	High
1+	$1.57	$1.57

Estimated market price range - modelled values for guidance only, not live distributor offers.

MAX5991AETP Features

Supports 802.3af and 802.3at PoE standards.
Achieves high efficiency exceeding 90%.
Includes adjustable current limit and UVLO.
Features integrated thermal shutdown protection.
Compact TQFN package for space savings.

MAX5991AETP Applications

Ideal for IP phones and VoIP devices.
Suitable for wireless access points.
Used in IP security cameras.
Applicable for industrial automation.
Powers IoT devices over Ethernet.

MAX5991AETP FAQs

6 frequently asked questions generated from this part’s specifications.

What PoE standards does the MAX5991AETP support?

The MAX5991AETP supports both 802.3af (15.4W) and 802.3at (25.5W) PoE standards.

What is the typical efficiency of the MAX5991AETP?

The typical efficiency exceeds 90%.

What is the input voltage for the MAX5991AETP?

The input voltage is 48V PoE.

What output voltages does the MAX5991AETP provide?

It provides output voltages of 3.3V or 5V.

What package is the MAX5991AETP available in?

It is available in a TQFN package.

Does the MAX5991AETP include thermal protection?

Yes, it includes integrated thermal protection and thermal shutdown.