Maxim Integrated
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MAX5939PESA
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MAX5939PESA

Product Overview

Category

MAX5939PESA belongs to the category of integrated circuits (ICs).

Use

The MAX5939PESA IC is primarily used for power management applications.

Characteristics

  • Package: The MAX5939PESA comes in a small 8-pin SOIC package.
  • Essence: This IC is designed to provide efficient power management solutions.
  • Packaging/Quantity: The MAX5939PESA is typically sold in reels or tubes, with a quantity of 250 units per reel/tube.

Specifications

The specifications of MAX5939PESA include:

  • Input Voltage Range: 4.5V to 5.5V
  • Output Voltage Range: 0.8V to 3.6V
  • Maximum Output Current: 1A
  • Operating Temperature Range: -40°C to +85°C
  • Quiescent Current: 50µA (typical)

Pin Configuration

The MAX5939PESA has the following pin configuration:

  1. VIN: Input voltage pin
  2. GND: Ground pin
  3. EN: Enable pin
  4. FB: Feedback pin
  5. VOUT: Output voltage pin
  6. SW: Switching pin
  7. PGND: Power ground pin
  8. SS/TR: Soft-start/Tracking pin

Functional Features

The MAX5939PESA offers the following functional features:

  • Integrated synchronous step-down DC-DC converter
  • Adjustable output voltage
  • Overcurrent protection
  • Thermal shutdown protection
  • Soft-start and tracking capability
  • Low quiescent current

Advantages and Disadvantages

Advantages: - Efficient power management solution - Small package size - Wide input voltage range - Adjustable output voltage

Disadvantages: - Limited maximum output current (1A) - Limited operating temperature range (-40°C to +85°C)

Working Principles

The MAX5939PESA operates as a synchronous step-down DC-DC converter. It takes an input voltage within the specified range and converts it to a lower, adjustable output voltage. The IC incorporates various protection features such as overcurrent and thermal shutdown to ensure safe operation.

Detailed Application Field Plans

The MAX5939PESA can be used in various applications, including but not limited to: - Portable electronic devices - Battery-powered systems - Industrial equipment - Automotive electronics

Alternative Models

Here are some alternative models that offer similar functionality to the MAX5939PESA:

  1. LT8610ABEMSE: Synchronous step-down DC-DC converter with adjustable output voltage and higher maximum output current.
  2. TPS54332DDAR: Integrated power management IC with adjustable output voltage and wider operating temperature range.
  3. ADP2384ACPZ-R7: Step-down DC-DC converter with adjustable output voltage and additional features like power good indicator.

These alternative models provide options for different requirements and specifications.

In conclusion, the MAX5939PESA is an integrated circuit designed for power management applications. It offers adjustable output voltage, efficient operation, and various protection features. While it has limitations in terms of maximum output current and operating temperature range, there are alternative models available to suit specific needs.

Seznam 10 běžných otázek a odpovědí souvisejících s aplikací MAX5939PESA v technických řešeních

Sure! Here are 10 common questions and answers related to the application of MAX5939PESA in technical solutions:

  1. Q: What is MAX5939PESA? A: MAX5939PESA is a power-over-Ethernet (PoE) controller designed for use in network devices that require both data and power over an Ethernet cable.

  2. Q: What is the maximum power output of MAX5939PESA? A: MAX5939PESA can deliver up to 25.5W of power to a PoE device, complying with the IEEE 802.3af standard.

  3. Q: Can MAX5939PESA be used with non-PoE devices? A: No, MAX5939PESA is specifically designed for PoE applications and cannot be used with non-PoE devices.

  4. Q: How does MAX5939PESA detect if a device is PoE compatible? A: MAX5939PESA uses a signature detection mechanism called "autoclassification" to identify if a connected device is PoE compatible or not.

  5. Q: Can MAX5939PESA provide power to multiple devices simultaneously? A: Yes, MAX5939PESA supports multi-port operation and can provide power to multiple PoE devices connected to its ports.

  6. Q: What is the input voltage range supported by MAX5939PESA? A: MAX5939PESA operates with an input voltage range of 36V to 57V.

  7. Q: Does MAX5939PESA have built-in protection features? A: Yes, MAX5939PESA includes various protection features such as overcurrent protection, thermal shutdown, and undervoltage lockout.

  8. Q: Can MAX5939PESA be used in high-temperature environments? A: Yes, MAX5939PESA is designed to operate in a wide temperature range of -40°C to +85°C, making it suitable for various environments.

  9. Q: Is MAX5939PESA compatible with all Ethernet standards? A: Yes, MAX5939PESA is compatible with both 10BASE-T and 100BASE-TX Ethernet standards.

  10. Q: Can MAX5939PESA be used in industrial applications? A: Yes, MAX5939PESA is suitable for industrial applications that require PoE functionality, such as IP cameras, wireless access points, and VoIP phones.

Please note that these answers are general and may vary depending on the specific implementation and requirements of your technical solution.