Meixin Integrated
Maaaring representasyon ang larawan.
Tingnan ang mga detalye para sa mga detalye ng produkto.
MAX5947AESA+T
Tingnan ang Detalye DataSheets

MAX5947AESA+T

Product Overview

  • Category: Integrated Circuit (IC)
  • Use: Power Management
  • Characteristics: High-Efficiency, Low-Power, Step-Down DC-DC Converter
  • Package: 8-pin SOIC (Small Outline Integrated Circuit)
  • Essence: Voltage Regulator
  • Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

  • Input Voltage Range: 2.7V to 5.5V
  • Output Voltage Range: 0.6V to VIN
  • Maximum Output Current: 1.5A
  • Efficiency: Up to 95%
  • Switching Frequency: 1MHz
  • Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The MAX5947AESA+T has the following pin configuration:

  1. GND (Ground): Connected to the ground reference of the circuit.
  2. EN (Enable): Active-high enable input for turning the device on or off.
  3. FB (Feedback): Feedback voltage input for regulating the output voltage.
  4. LX (Switch Node): Connects to the inductor and provides the switching path for the internal MOSFET.
  5. SW (Switch): Connects to the external power switch.
  6. PGND (Power Ground): Connected to the ground reference for the power stage.
  7. VCC (Supply Voltage): Connects to the positive supply voltage.
  8. VIN (Input Voltage): Connects to the input voltage source.

Functional Features

  • High efficiency conversion of input voltage to regulated output voltage.
  • Low-power operation for energy-efficient applications.
  • Step-down (buck) topology for reducing voltage levels.
  • Internal synchronous rectification for improved efficiency.
  • Overcurrent and overtemperature protection for safe operation.
  • Soft-start feature for controlled startup and reduced inrush current.

Advantages and Disadvantages

Advantages: - High efficiency results in reduced power consumption. - Wide input voltage range allows for versatile applications. - Small package size enables space-saving designs. - Integrated protection features enhance reliability. - Soft-start feature prevents excessive current during startup.

Disadvantages: - Limited maximum output current may restrict certain high-power applications. - Operating temperature range may not be suitable for extreme environments. - Requires external components for complete circuit implementation.

Working Principles

The MAX5947AESA+T is a step-down DC-DC converter that regulates the output voltage by efficiently converting the input voltage. It utilizes a buck topology, where the input voltage is stepped down to a lower level using an inductor and a power switch. The internal synchronous rectification further improves efficiency by reducing power losses.

The device operates by continuously switching the power switch on and off at a high frequency, typically 1MHz. This switching action controls the energy transfer from the input to the output, resulting in a regulated output voltage. The feedback voltage on the FB pin is compared to a reference voltage, and the duty cycle of the power switch is adjusted accordingly to maintain the desired output voltage.

The MAX5947AESA+T also incorporates various protection features such as overcurrent and overtemperature protection. These safeguards ensure safe operation and prevent damage to the device and connected components.

Detailed Application Field Plans

The MAX5947AESA+T finds applications in various fields, including:

  1. Portable Electronics: Power management for smartphones, tablets, and portable media players.
  2. IoT Devices: Efficient power supply for sensors, wireless modules, and microcontrollers.
  3. Industrial Automation: Voltage regulation for control systems, motor drives, and PLCs.
  4. Automotive Electronics: Power management for infotainment systems, lighting, and ADAS.
  5. Consumer Electronics: Energy-efficient power supply for TVs, set-top boxes, and gaming consoles.

Detailed and Complete Alternative Models

  1. MAX5947BESA+T: Similar specifications and features as MAX5947AESA+T, but with a different pin configuration.
  2. MAX5948AESA+T: Step-down DC-DC converter with higher maximum output current (3A) and wider input voltage range (2.5V to 5.5V).
  3. MAX5949AESA+T: Buck-boost DC-DC converter capable of regulating both lower and higher output voltages.

These alternative models offer similar functionality and can be considered based on specific application requirements.

Word count: 529 words

Maglista ng 10 karaniwang tanong at sagot na nauugnay sa aplikasyon ng MAX5947AESA+T sa mga teknikal na solusyon

Sure! Here are 10 common questions and answers related to the application of MAX5947AESA+T in technical solutions:

  1. Q: What is the MAX5947AESA+T? A: The MAX5947AESA+T is a power management IC (PMIC) designed for use in PoE (Power over Ethernet) applications.

  2. Q: What is the purpose of the MAX5947AESA+T? A: The MAX5947AESA+T provides power sourcing equipment (PSE) functionality, allowing it to deliver power to connected devices over an Ethernet cable.

  3. Q: What is the maximum power output of the MAX5947AESA+T? A: The MAX5947AESA+T can deliver up to 15.4 watts of power per port, which is compliant with the IEEE 802.3af standard.

  4. Q: Can the MAX5947AESA+T support higher power levels? A: No, the MAX5947AESA+T is designed for low-power PoE applications and does not support higher power levels like those specified in the IEEE 802.3at standard.

  5. Q: How many ports does the MAX5947AESA+T support? A: The MAX5947AESA+T supports up to four PoE ports, allowing you to power up to four devices simultaneously.

  6. Q: Does the MAX5947AESA+T require any external components? A: Yes, the MAX5947AESA+T requires external MOSFETs, transformers, and capacitors to complete the PoE circuitry.

  7. Q: What is the input voltage range of the MAX5947AESA+T? A: The MAX5947AESA+T operates from a wide input voltage range of 36V to 57V.

  8. Q: Can the MAX5947AESA+T provide power to non-PoE devices? A: Yes, the MAX5947AESA+T can also be used to power non-PoE devices by connecting them to the non-PoE ports.

  9. Q: Does the MAX5947AESA+T have any built-in protection features? A: Yes, the MAX5947AESA+T includes various protection features like overcurrent protection, thermal shutdown, and undervoltage lockout.

  10. Q: What is the package type of the MAX5947AESA+T? A: The MAX5947AESA+T is available in an 8-pin SOIC (Small Outline Integrated Circuit) package.

Please note that these answers are general and may vary depending on the specific application and requirements. It's always recommended to refer to the datasheet and consult with the manufacturer for detailed information.