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MAX1889ETE+T
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MAX1889ETE+T

Product Overview

  • Category: Integrated Circuit (IC)
  • Use: Power Management
  • Characteristics: High-efficiency, Step-Up DC-DC Converter
  • Package: 16-pin TQFN (Thin Quad Flat No-Lead)
  • Essence: Voltage Regulator
  • Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

  • Input Voltage Range: 2.5V to 5.5V
  • Output Voltage Range: 4V to 5.5V
  • Maximum Output Current: 500mA
  • Switching Frequency: 1.2MHz
  • Efficiency: Up to 95%
  • Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The MAX1889ETE+T has a total of 16 pins. The pin configuration is as follows:

  1. EN (Enable): Enable input pin for turning the device on/off.
  2. FB (Feedback): Feedback input pin for regulating the output voltage.
  3. LX (Switch Node): Switching node connection for the internal power switch.
  4. PGND (Power Ground): Ground connection for the power stage.
  5. SW (Switch): Connection to the external inductor and diode.
  6. BST (Bootstrap): Bootstrap capacitor connection for driving the high-side MOSFET.
  7. AGND (Analog Ground): Ground connection for the control circuitry.
  8. VCC (Supply Voltage): Supply voltage input pin.

Functional Features

  • High Efficiency: The MAX1889ETE+T utilizes a high-efficiency step-up DC-DC converter design, ensuring minimal power loss during voltage conversion.
  • Wide Input Voltage Range: It can accept input voltages ranging from 2.5V to 5.5V, making it suitable for various applications.
  • Adjustable Output Voltage: The output voltage can be adjusted within the range of 4V to 5.5V, providing flexibility for different system requirements.
  • Integrated Protection Features: The IC includes built-in protection features such as overcurrent protection, thermal shutdown, and undervoltage lockout, ensuring safe operation.

Advantages and Disadvantages

Advantages: - High efficiency results in reduced power consumption. - Wide input voltage range allows for compatibility with different power sources. - Compact package size enables space-saving designs. - Integrated protection features enhance system reliability.

Disadvantages: - Limited maximum output current may not be suitable for high-power applications. - Fixed switching frequency may not be optimal for all scenarios.

Working Principles

The MAX1889ETE+T is a step-up DC-DC converter that converts a lower input voltage to a higher output voltage. It utilizes a high-frequency switching technique to efficiently transfer energy from the input to the output. The internal control circuitry regulates the duty cycle of the switching transistor to maintain the desired output voltage. Feedback from the output voltage is continuously monitored and compared to a reference voltage, allowing for precise regulation.

Detailed Application Field Plans

The MAX1889ETE+T is commonly used in various battery-powered applications, such as portable devices, handheld instruments, and wireless communication systems. It is particularly suitable for boosting the voltage from a single-cell lithium-ion/polymer battery to power components requiring higher voltages, such as LCD displays, audio amplifiers, and RF modules.

Detailed and Complete Alternative Models

  • MAX1771: Step-Up DC-DC Converter, 500mA Output Current, 2.5V to 12V Input Voltage Range.
  • MAX6190: Step-Up DC-DC Converter, 300mA Output Current, 1.8V to 5.5V Input Voltage Range.
  • MAX1724: Step-Up DC-DC Converter, 500mA Output Current, 2.5V to 12V Input Voltage Range.

These alternative models offer similar functionality and can be considered as substitutes for the MAX1889ETE+T in different applications.

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Texniki həllərdə MAX1889ETE+T tətbiqi ilə bağlı 10 ümumi sual və cavabı sadalayın

Sure! Here are 10 common questions and answers related to the application of MAX1889ETE+T in technical solutions:

  1. Q: What is the MAX1889ETE+T? A: The MAX1889ETE+T is a high-efficiency, step-up DC-DC converter designed for applications requiring low input voltage and high output voltage.

  2. Q: What is the input voltage range of the MAX1889ETE+T? A: The input voltage range of the MAX1889ETE+T is typically between 0.8V and 5.5V.

  3. Q: What is the output voltage range of the MAX1889ETE+T? A: The output voltage range of the MAX1889ETE+T can be set from 2.7V to 5.5V using external resistors.

  4. Q: What is the maximum output current of the MAX1889ETE+T? A: The maximum output current of the MAX1889ETE+T is typically 200mA.

  5. Q: Can the MAX1889ETE+T operate with a single-cell Li-ion battery? A: Yes, the MAX1889ETE+T can operate with a single-cell Li-ion battery as it supports input voltages as low as 0.8V.

  6. Q: Does the MAX1889ETE+T have built-in overcurrent protection? A: Yes, the MAX1889ETE+T features built-in overcurrent protection to prevent damage to the device and the connected components.

  7. Q: Is the MAX1889ETE+T suitable for portable devices? A: Yes, the MAX1889ETE+T is suitable for portable devices due to its low input voltage range and high efficiency, making it ideal for battery-powered applications.

  8. Q: Can the MAX1889ETE+T be used in automotive applications? A: Yes, the MAX1889ETE+T can be used in automotive applications as it can handle a wide input voltage range and has built-in protection features.

  9. Q: Does the MAX1889ETE+T require external components for operation? A: Yes, the MAX1889ETE+T requires external resistors to set the desired output voltage and capacitors for stability.

  10. Q: What is the package type of the MAX1889ETE+T? A: The MAX1889ETE+T is available in a 16-pin TQFN package, which is compact and suitable for space-constrained designs.

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