Maxim Integrated
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MAX8643AETG+T
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MAX8643AETG+T

Product Overview

  • Category: Integrated Circuit (IC)
  • Use: Power Management
  • Characteristics: High-efficiency, Low-power consumption
  • Package: 24-pin TQFN (Thin Quad Flat No-Lead) package
  • Essence: Voltage Regulator
  • Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

  • Input Voltage Range: 2.7V to 5.5V
  • Output Voltage Range: 0.6V to 3.3V
  • Output Current: Up to 1.5A
  • Efficiency: Up to 95%
  • Quiescent Current: 30µA (typical)
  • Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The MAX8643AETG+T has a total of 24 pins. The pin configuration is as follows:

  1. VIN: Input voltage pin
  2. GND: Ground pin
  3. EN: Enable pin
  4. FB: Feedback pin
  5. SS/TRK: Soft-start/Tracking pin
  6. PG: Power Good pin
  7. VOUT: Output voltage pin
  8. AGND: Analog ground pin
  9. COMP: Compensation pin
  10. BST: Boost pin
  11. LX: Switching node pin
  12. SW: Switch pin
  13. VCC: Supply voltage pin
  14. VCC: Supply voltage pin
  15. VCC: Supply voltage pin
  16. VCC: Supply voltage pin
  17. VCC: Supply voltage pin
  18. VCC: Supply voltage pin
  19. VCC: Supply voltage pin
  20. VCC: Supply voltage pin
  21. VCC: Supply voltage pin
  22. VCC: Supply voltage pin
  23. VCC: Supply voltage pin
  24. VCC: Supply voltage pin

Functional Features

  • High-efficiency step-down voltage regulator
  • Integrated power MOSFETs for high efficiency
  • Adjustable output voltage through external resistors
  • Soft-start and tracking functions for controlled startup
  • Power Good (PG) signal for system monitoring
  • Overcurrent and thermal protection features

Advantages and Disadvantages

Advantages: - High efficiency, reducing power consumption - Wide input voltage range for versatile applications - Compact package size for space-constrained designs - Integrated protection features for enhanced reliability

Disadvantages: - Limited output current compared to higher-power regulators - Requires external resistors for adjustable output voltage

Working Principles

The MAX8643AETG+T is a high-efficiency step-down voltage regulator. It takes an input voltage within the range of 2.7V to 5.5V and converts it to a lower, adjustable output voltage between 0.6V and 3.3V. The integrated power MOSFETs ensure high efficiency by minimizing power losses during the conversion process.

The regulator can be enabled or disabled using the EN pin. Soft-start and tracking functions allow for controlled startup and synchronization with other power supplies in the system. The PG pin provides a signal indicating the status of the output voltage, enabling system monitoring.

The MAX8643AETG+T incorporates overcurrent and thermal protection features to safeguard against potential damage. These protections ensure the safe operation of the regulator under various load conditions and temperature ranges.

Detailed Application Field Plans

The MAX8643AETG+T is suitable for a wide range of applications that require efficient power management. Some potential application fields include:

  1. Portable Electronic Devices: Battery-powered devices such as smartphones, tablets, and portable media players can benefit from the high efficiency and low power consumption of the MAX8643AETG+T. It helps extend battery life and optimize power usage.

  2. IoT Devices: Internet of Things (IoT) devices often operate on limited power sources, such as batteries or energy harvesting systems. The MAX8643AETG+T can efficiently regulate the voltage for various IoT sensors, modules, and communication components.

  3. Industrial Equipment: The regulator's wide input voltage range and compact package make it suitable for industrial equipment that requires stable and efficient power management. Examples include control systems, motor drives, and instrumentation devices.

  4. Automotive Electronics: The MAX8643AETG+T can be used in automotive applications where space is limited, and high efficiency is crucial. It can power various electronic components, such as infotainment systems, navigation units, and advanced driver-assistance systems (ADAS).

Detailed and Complete Alternative Models

  1. MAX8642AETG+T: Similar to the MAX8643AETG+T, but with a lower output current capability of up to 1A.
  2. MAX8644AETG+T: Higher-output

Enumere 10 preguntas y respuestas comunes relacionadas con la aplicación de MAX8643AETG+T en soluciones técnicas

Sure! Here are 10 common questions and answers related to the application of MAX8643AETG+T in technical solutions:

  1. Q: What is the MAX8643AETG+T? A: The MAX8643AETG+T is a high-efficiency, synchronous step-down DC-DC converter with integrated power switches.

  2. Q: What is the input voltage range of the MAX8643AETG+T? A: The input voltage range of the MAX8643AETG+T is typically between 4.5V and 28V.

  3. Q: What is the output voltage range of the MAX8643AETG+T? A: The output voltage range of the MAX8643AETG+T can be programmed from 0.6V to 90% of the input voltage.

  4. Q: What is the maximum output current of the MAX8643AETG+T? A: The maximum output current of the MAX8643AETG+T is typically 3A.

  5. Q: Does the MAX8643AETG+T have built-in protection features? A: Yes, the MAX8643AETG+T includes overcurrent protection, thermal shutdown, and undervoltage lockout.

  6. Q: Can the MAX8643AETG+T operate in a wide temperature range? A: Yes, the MAX8643AETG+T is designed to operate in a temperature range of -40°C to +125°C.

  7. Q: Is the MAX8643AETG+T suitable for battery-powered applications? A: Yes, the MAX8643AETG+T is well-suited for battery-powered applications due to its low quiescent current and high efficiency.

  8. Q: Can the MAX8643AETG+T be used in automotive applications? A: Yes, the MAX8643AETG+T is automotive-grade and can be used in automotive applications.

  9. Q: Does the MAX8643AETG+T require external components for operation? A: Yes, the MAX8643AETG+T requires a few external components such as input/output capacitors and an inductor.

  10. Q: What is the typical efficiency of the MAX8643AETG+T? A: The typical efficiency of the MAX8643AETG+T is around 90% at full load, depending on the input and output voltage conditions.

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