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MAX8878EUK28+T
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MAX8878EUK28+T

Product Overview

  • Category: Integrated Circuit (IC)
  • Use: Voltage Regulator
  • Characteristics: Low Dropout, Low Quiescent Current, High PSRR
  • Package: SOT-23-5
  • Essence: Step-Down (Buck) Regulator
  • Packaging/Quantity: Tape and Reel, 3000 pieces per reel

Specifications

  • Input Voltage Range: 2.5V to 6.5V
  • Output Voltage: 2.8V
  • Output Current: Up to 150mA
  • Quiescent Current: 17µA (typical)
  • Dropout Voltage: 120mV at 100mA load
  • PSRR: 70dB at 1kHz
  • Operating Temperature Range: -40°C to +85°C

Pin Configuration

The MAX8878EUK28+T has a total of 5 pins in the SOT-23 package:

  1. GND: Ground connection
  2. EN: Enable pin for turning the regulator on/off
  3. FB: Feedback pin for setting the output voltage
  4. VIN: Input voltage pin
  5. VOUT: Output voltage pin

Functional Features

  • Low dropout voltage allows efficient regulation even with small input-output differentials.
  • Low quiescent current ensures minimal power consumption during standby or idle conditions.
  • High Power Supply Rejection Ratio (PSRR) reduces sensitivity to fluctuations in the input voltage.
  • Thermal shutdown and current limit protection features enhance device reliability.

Advantages and Disadvantages

Advantages

  • Small package size enables space-saving designs.
  • Wide input voltage range provides flexibility in various applications.
  • Low quiescent current extends battery life in portable devices.
  • High PSRR ensures stable output voltage even in noisy environments.

Disadvantages

  • Limited output current may not be suitable for high-power applications.
  • Dropout voltage may cause a significant power loss in low input voltage scenarios.

Working Principles

The MAX8878EUK28+T is a step-down (buck) regulator that converts a higher input voltage to a lower output voltage. It utilizes a switching mechanism to efficiently regulate the output voltage while minimizing power dissipation. The feedback pin (FB) allows the user to set the desired output voltage by connecting appropriate resistors. The enable pin (EN) controls the on/off state of the regulator.

Detailed Application Field Plans

The MAX8878EUK28+T is commonly used in various battery-powered applications, such as:

  1. Mobile Phones
  2. Portable Media Players
  3. Digital Cameras
  4. Wireless Headsets
  5. Handheld Gaming Devices

Due to its small package size, low quiescent current, and wide input voltage range, it is well-suited for these portable devices where space and power efficiency are crucial.

Detailed and Complete Alternative Models

  1. MAX8887: Similar specifications with adjustable output voltage.
  2. MAX8869: Higher output current capability with fixed output voltage.
  3. MAX8890: Higher output voltage range with adjustable output voltage.
  4. MAX8860: Lower dropout voltage with fixed output voltage.

These alternative models provide options based on specific requirements, allowing designers to choose the most suitable solution for their applications.

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Noem 10 veelgestelde vragen en antwoorden met betrekking tot de toepassing van MAX8878EUK28+T in technische oplossingen

Sure! Here are 10 common questions and answers related to the application of MAX8878EUK28+T in technical solutions:

  1. Q: What is the MAX8878EUK28+T? A: The MAX8878EUK28+T is a low-dropout linear regulator (LDO) IC that provides a fixed output voltage of 2.8V.

  2. Q: What is the input voltage range for the MAX8878EUK28+T? A: The input voltage range for the MAX8878EUK28+T is typically between 2.5V and 6.5V.

  3. Q: What is the maximum output current of the MAX8878EUK28+T? A: The MAX8878EUK28+T can provide a maximum output current of 150mA.

  4. Q: Can the MAX8878EUK28+T be used in battery-powered applications? A: Yes, the low dropout voltage and low quiescent current make it suitable for battery-powered applications.

  5. Q: Does the MAX8878EUK28+T have built-in thermal shutdown protection? A: Yes, the MAX8878EUK28+T has built-in thermal shutdown protection to prevent overheating.

  6. Q: Can I use the MAX8878EUK28+T in automotive applications? A: No, the MAX8878EUK28+T is not specifically designed for automotive applications.

  7. Q: Is the MAX8878EUK28+T available in different package options? A: No, the MAX8878EUK28+T is only available in a SOT23-5 package.

  8. Q: What is the typical dropout voltage of the MAX8878EUK28+T? A: The typical dropout voltage of the MAX8878EUK28+T is 120mV at 100mA load.

  9. Q: Can I use the MAX8878EUK28+T to power digital logic circuits? A: Yes, the MAX8878EUK28+T can be used to power various digital logic circuits.

  10. Q: Does the MAX8878EUK28+T require any external components for operation? A: Yes, the MAX8878EUK28+T requires a minimum of two external capacitors for stability and proper operation.

Please note that these answers are based on general information about the MAX8878EUK28+T and may vary depending on specific application requirements. It is always recommended to refer to the datasheet and consult with the manufacturer for detailed technical information.