Monolithic Power Systems Inc.
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MP28490DN-LF
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MP28490DN-LF

Product Overview

  • Category: Integrated Circuit (IC)
  • Use: Power Management
  • Characteristics:
    • High efficiency
    • Low power consumption
    • Small form factor
  • Package: DFN-8 (Dual Flat No-Lead)
  • Essence: Power management IC for various applications
  • Packaging/Quantity: Tape and Reel, 3000 units per reel

Specifications

  • Input Voltage Range: 2.7V to 5.5V
  • Output Voltage Range: 0.6V to VIN
  • Maximum Output Current: 1.5A
  • Switching Frequency: 1.2MHz
  • Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The MP28490DN-LF has the following pin configuration:

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

Functional Features

  • Integrated synchronous step-down converter
  • Adjustable output voltage
  • Overcurrent protection
  • Thermal shutdown protection
  • Under-voltage lockout
  • Soft-start function for controlled startup

Advantages and Disadvantages

Advantages: - High efficiency leads to reduced power consumption - Compact size allows for space-saving designs - Wide input voltage range enables versatile applications - Comprehensive protection features enhance reliability

Disadvantages: - Limited maximum output current may not be suitable for high-power applications - Operating temperature range may restrict usage in extreme environments

Working Principles

The MP28490DN-LF is a synchronous step-down converter that efficiently converts a higher input voltage to a lower output voltage. It utilizes a high-frequency switching technique to minimize power losses and maximize efficiency. The integrated control circuitry ensures stable and regulated output voltage, while the protection features safeguard against overcurrent and overheating conditions.

Detailed Application Field Plans

The MP28490DN-LF is widely used in various applications, including but not limited to:

  1. Portable electronic devices
  2. Battery-powered systems
  3. IoT (Internet of Things) devices
  4. Wearable technology
  5. Industrial automation
  6. Automotive electronics

Detailed and Complete Alternative Models

  1. MP28390DN-LF: Similar specifications, different package (SOT-23-6)
  2. MP28590DN-LF: Higher maximum output current (2A), similar specifications
  3. MP28690DN-LF: Lower input voltage range (1.8V to 5.5V), similar specifications

These alternative models provide flexibility in choosing the most suitable power management IC based on specific requirements.

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Enumere 10 preguntas y respuestas comunes relacionadas con la aplicación de MP28490DN-LF en soluciones técnicas

Sure! Here are 10 common questions and answers related to the application of MP28490DN-LF in technical solutions:

  1. Q: What is MP28490DN-LF? A: MP28490DN-LF is a specific model of power management integrated circuit (PMIC) designed for use in various technical solutions.

  2. Q: What are the key features of MP28490DN-LF? A: Some key features of MP28490DN-LF include multiple voltage regulators, power sequencing, fault protection, and high efficiency.

  3. Q: What technical solutions can MP28490DN-LF be used in? A: MP28490DN-LF can be used in a wide range of applications such as industrial automation, consumer electronics, automotive systems, and more.

  4. Q: How many voltage regulators does MP28490DN-LF have? A: MP28490DN-LF has multiple voltage regulators, typically including buck converters, LDOs (low-dropout regulators), and other types depending on the specific variant.

  5. Q: What is power sequencing, and why is it important? A: Power sequencing refers to the controlled order in which different power supplies or voltage rails are turned on/off. It is important to ensure proper functionality and prevent damage to sensitive components.

  6. Q: Does MP28490DN-LF provide any fault protection mechanisms? A: Yes, MP28490DN-LF usually includes various fault protection features like overvoltage protection (OVP), undervoltage lockout (UVLO), overcurrent protection (OCP), and thermal shutdown.

  7. Q: Can MP28490DN-LF operate at high efficiency? A: Yes, MP28490DN-LF is designed to operate with high efficiency, minimizing power losses and maximizing battery life in portable devices.

  8. Q: Is MP28490DN-LF suitable for automotive applications? A: Yes, MP28490DN-LF is often used in automotive systems due to its robustness, wide input voltage range, and ability to withstand harsh operating conditions.

  9. Q: Are there any evaluation boards or reference designs available for MP28490DN-LF? A: Yes, the manufacturer of MP28490DN-LF typically provides evaluation boards and reference designs to help engineers quickly prototype and integrate the IC into their solutions.

  10. Q: Where can I find more detailed information about MP28490DN-LF? A: You can refer to the datasheet, application notes, and technical documentation provided by the manufacturer of MP28490DN-LF for more detailed information on its specifications, features, and application guidelines.