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MAX1649CPA
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MAX1649CPA

Product Overview

Category

MAX1649CPA belongs to the category of integrated circuits (ICs).

Use

The MAX1649CPA is commonly used as a step-up DC-DC converter.

Characteristics

  • Input Voltage Range: 2.5V to 16V
  • Output Voltage Range: Up to 28V
  • Maximum Output Current: 100mA
  • Efficiency: Up to 90%
  • Operating Temperature Range: -40°C to +85°C
  • Package Type: 8-pin PDIP (Plastic Dual In-Line Package)

Essence

The MAX1649CPA is an efficient and versatile step-up DC-DC converter that provides a regulated output voltage higher than the input voltage.

Packaging/Quantity

The MAX1649CPA is available in a standard 8-pin PDIP package. It is typically sold in reels or tubes, with a quantity of 25 units per tube.

Specifications

  • Input Voltage Range: 2.5V to 16V
  • Output Voltage Range: Up to 28V
  • Maximum Output Current: 100mA
  • Switching Frequency: 300kHz
  • Shutdown Current: 0.1µA (typical)
  • Quiescent Current: 120µA (typical)
  • Duty Cycle: Up to 90%

Detailed Pin Configuration

The MAX1649CPA has the following pin configuration:

  1. GND (Ground): Connected to the ground reference.
  2. SW (Switch): Connects to the inductor and serves as the switching node.
  3. FB (Feedback): Provides feedback for regulating the output voltage.
  4. VCC (Voltage Input): Connects to the positive supply voltage.
  5. EN (Enable): Controls the enable/disable function of the device.
  6. NC (No Connection): Pin not connected internally.
  7. NC (No Connection): Pin not connected internally.
  8. VOUT (Voltage Output): Provides the regulated output voltage.

Functional Features

  • High Efficiency: The MAX1649CPA achieves high efficiency, up to 90%, by utilizing a synchronous rectifier and low-dropout (LDO) linear regulator.
  • Low Quiescent Current: With a typical quiescent current of 120µA, the MAX1649CPA minimizes power consumption in standby mode.
  • Adjustable Output Voltage: The output voltage can be adjusted using external resistors, allowing flexibility in various applications.
  • Overcurrent Protection: The device incorporates overcurrent protection to prevent damage to the circuitry in case of excessive load.

Advantages and Disadvantages

Advantages

  • High efficiency leads to reduced power dissipation.
  • Wide input voltage range allows for versatile applications.
  • Compact package size enables space-saving designs.
  • Adjustable output voltage provides flexibility.

Disadvantages

  • Limited maximum output current of 100mA may restrict certain high-power applications.
  • Synchronous rectification may introduce additional complexity in the design.

Working Principles

The MAX1649CPA operates as a step-up DC-DC converter using a pulse-width modulation (PWM) control scheme. It converts the input voltage to a higher regulated output voltage by controlling the duty cycle of the internal switch. The feedback pin monitors the output voltage and adjusts the duty cycle accordingly to maintain a stable output.

Detailed Application Field Plans

The MAX1649CPA is commonly used in various applications, including but not limited to: - Battery-powered devices requiring higher voltage levels. - Portable electronic devices such as smartphones, tablets, and digital cameras. - Automotive electronics, such as dashboard displays and infotainment systems. - Industrial equipment and instrumentation. - LED lighting applications.

Detailed and Complete Alternative Models

  • MAX1674: Step-up DC-DC converter with higher maximum output current of 500mA.
  • MAX1722: Step-up DC-DC converter with lower quiescent current and wider input voltage range.
  • MAX6190: Step-up DC-DC converter with adjustable output voltage and higher efficiency.

These alternative models offer different specifications and features, providing options for specific application requirements.

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Texniki həllərdə MAX1649CPA tətbiqi ilə bağlı 10 ümumi sual və cavabı sadalayın

Sure! Here are 10 common questions and answers related to the application of MAX1649CPA in technical solutions:

  1. Q: What is MAX1649CPA? A: MAX1649CPA is a high-efficiency, step-up DC-DC converter IC designed for various applications requiring higher voltage levels.

  2. Q: What is the input voltage range of MAX1649CPA? A: The input voltage range of MAX1649CPA is typically between 2.5V and 16V.

  3. Q: What is the output voltage range of MAX1649CPA? A: The output voltage range of MAX1649CPA can be adjusted from 4V to 28V using external components.

  4. Q: What is the maximum output current of MAX1649CPA? A: The maximum output current of MAX1649CPA is typically around 100mA.

  5. Q: Can MAX1649CPA operate with low input voltages? A: Yes, MAX1649CPA can operate with input voltages as low as 2.5V, making it suitable for battery-powered applications.

  6. Q: Does MAX1649CPA have built-in protection features? A: Yes, MAX1649CPA includes features like thermal shutdown, overcurrent protection, and reverse-battery protection.

  7. Q: Can MAX1649CPA be used in automotive applications? A: Yes, MAX1649CPA is suitable for automotive applications as it can withstand automotive load-dump transients and has reverse-battery protection.

  8. Q: How efficient is MAX1649CPA? A: MAX1649CPA has a high efficiency of up to 90%, which helps minimize power losses and maximize battery life.

  9. Q: Can MAX1649CPA be used in portable devices? A: Yes, MAX1649CPA is commonly used in portable devices like smartphones, tablets, and portable audio players to generate higher voltage levels.

  10. Q: What are some typical applications of MAX1649CPA? A: Some typical applications of MAX1649CPA include LCD bias supplies, white LED drivers, battery-powered systems, and automotive electronics.

Please note that the answers provided here are general and may vary depending on specific design requirements and application scenarios. It is always recommended to refer to the datasheet and consult with technical experts for accurate information and guidance.