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MAX8821ETI+

MAX8821ETI+ - English Editing Encyclopedia Entry

Product Overview

Category: Integrated Circuit (IC)

Use: Power Management IC

Characteristics: - High efficiency - Low power consumption - Compact size - Wide input voltage range

Package: 28-pin TQFN (Thin Quad Flat No-Lead) package

Essence: The MAX8821ETI+ is a power management IC designed for various applications that require efficient power conversion and management.

Packaging/Quantity: The MAX8821ETI+ is typically sold in reels of 2500 units.

Specifications

  • Input Voltage Range: 2.7V to 5.5V
  • Output Voltage Range: 0.6V to 5.5V
  • Maximum Output Current: 3A
  • Switching Frequency: 1MHz
  • Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The MAX8821ETI+ has a total of 28 pins, each serving a specific function. Here is a detailed pin configuration:

  1. VIN: Input voltage pin
  2. EN: Enable pin
  3. PGND: Power ground pin
  4. SW: Switching node pin
  5. LX: Inductor connection pin
  6. BST: Boost capacitor connection pin
  7. FB: Feedback pin
  8. SS/TR: Soft-start/tracking pin
  9. AGND: Analog ground pin
  10. VCC: Supply voltage pin
  11. PG: Power good indicator pin
  12. PGOOD: Power good output pin
  13. VOUT: Output voltage pin
  14. COMP: Compensation pin
  15. SS/TR: Soft-start/tracking pin
  16. AGND: Analog ground pin
  17. VCC: Supply voltage pin
  18. PG: Power good indicator pin
  19. PGOOD: Power good output pin
  20. VOUT: Output voltage pin
  21. COMP: Compensation pin
  22. AGND: Analog ground pin
  23. VCC: Supply voltage pin
  24. PG: Power good indicator pin
  25. PGOOD: Power good output pin
  26. VOUT: Output voltage pin
  27. COMP: Compensation pin
  28. AGND: Analog ground pin

Functional Features

  • High efficiency power conversion
  • Integrated synchronous rectification
  • Overcurrent and overtemperature protection
  • Soft-start and tracking functionality
  • Power good indicator for output voltage monitoring

Advantages and Disadvantages

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

Disadvantages: - Limited maximum output current of 3A may not be suitable for high-power applications - Higher cost compared to non-integrated power management solutions

Working Principles

The MAX8821ETI+ utilizes a switching regulator architecture to efficiently convert the input voltage to the desired output voltage. It incorporates synchronous rectification to minimize power losses during the conversion process. The IC also includes various control and protection mechanisms to ensure stable and reliable operation.

Detailed Application Field Plans

The MAX8821ETI+ finds applications in a wide range of electronic devices, including but not limited to: - Portable electronic devices (e.g., smartphones, tablets) - Wearable devices - IoT (Internet of Things) devices - Battery-powered devices - Industrial equipment - Automotive electronics

Detailed and Complete Alternative Models

  1. MAX8820ETI+: Similar to MAX8821ETI+, but with a lower maximum output current of 2A.
  2. MAX8822ETI+: Similar to MAX8821ETI+, but with a higher maximum output current of 4A.
  3. MAX8823ETI+: Similar to MAX8821ETI+, but with additional features such as adjustable output voltage and power sequencing capabilities.

These alternative models provide options with varying specifications to cater to different application requirements.

In conclusion, the MAX8821ETI+ is a highly efficient power management IC designed for various electronic devices. Its compact size, wide input voltage range, and integrated protection features make it suitable for a wide range of applications. However, its limited maximum output current and higher cost should be considered when selecting an appropriate solution.

רשום 10 שאלות ותשובות נפוצות הקשורות ליישום של MAX8821ETI+ בפתרונות טכניים

Sure! Here are 10 common questions and answers related to the application of MAX8821ETI+ in technical solutions:

Q1: What is the MAX8821ETI+? A1: The MAX8821ETI+ is a highly integrated power management IC (PMIC) designed for use in portable devices such as smartphones, tablets, and other battery-powered applications.

Q2: What are the key features of the MAX8821ETI+? A2: The key features of the MAX8821ETI+ include multiple voltage regulators, battery charger, power switches, and protection circuits. It also offers high efficiency, low quiescent current, and small form factor.

Q3: How many voltage regulators does the MAX8821ETI+ have? A3: The MAX8821ETI+ has four voltage regulators, including one buck-boost regulator and three low-dropout (LDO) regulators.

Q4: What is the purpose of the buck-boost regulator in the MAX8821ETI+? A4: The buck-boost regulator in the MAX8821ETI+ is used to provide a stable output voltage regardless of the input voltage level. It can step up or step down the voltage as needed.

Q5: Can the MAX8821ETI+ charge the battery while the device is powered on? A5: Yes, the MAX8821ETI+ has a built-in battery charger that can charge the battery while the device is powered on. It supports various charging profiles and provides overvoltage/overcurrent protection.

Q6: What is the maximum charging current supported by the MAX8821ETI+? A6: The maximum charging current supported by the MAX8821ETI+ is typically 2A, but it can be adjusted based on the system requirements.

Q7: Does the MAX8821ETI+ provide any protection features? A7: Yes, the MAX8821ETI+ provides various protection features such as overvoltage protection, overcurrent protection, thermal shutdown, and short-circuit protection.

Q8: Can the MAX8821ETI+ operate with a wide input voltage range? A8: Yes, the MAX8821ETI+ can operate with an input voltage range of 2.5V to 5.5V, making it suitable for a wide range of battery-powered applications.

Q9: Is the MAX8821ETI+ compatible with different battery chemistries? A9: Yes, the MAX8821ETI+ is compatible with various battery chemistries, including lithium-ion (Li-ion), lithium-polymer (LiPo), and nickel-metal hydride (NiMH).

Q10: What is the package type of the MAX8821ETI+? A10: The MAX8821ETI+ is available in a compact 28-pin TQFN package, which is suitable for space-constrained applications.

Please note that these questions and answers are general and may vary depending on specific application requirements.