Maxim Integrated
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MAX14745FEWX+T
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MAX14745FEWX+T

Product Overview

  • Category: Integrated Circuit (IC)
  • Use: Power Management
  • Characteristics: High Efficiency, Low Power Consumption
  • Package: 24-WLP (Wafer Level Package)
  • Essence: Power Management IC for Portable Devices
  • Packaging/Quantity: Tape and Reel, 3000 units per reel

Specifications

  • Input Voltage Range: 2.7V to 5.5V
  • Output Voltage Range: 0.8V to 3.6V
  • Maximum Output Current: 1.5A
  • Quiescent Current: 10µA (typical)
  • Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The MAX14745FEWX+T has a total of 24 pins. The pin configuration is as follows:

  1. VIN: Input Voltage
  2. EN: Enable Pin
  3. GND: Ground
  4. VOUT: Output Voltage
  5. FB: Feedback Pin
  6. BST: Boost Pin
  7. SW: Switching Node
  8. AGND: Analog Ground
  9. PGND: Power Ground
  10. LX: Inductor Connection
  11. SS: Soft-Start Pin
  12. PG: Power Good Indicator
  13. VDD: Digital Supply Voltage
  14. VREF: Reference Voltage
  15. CLK: Clock Input
  16. SDATA: Serial Data Input
  17. SCLK: Serial Clock Input
  18. CS: Chip Select Input
  19. IRQ: Interrupt Request Output
  20. INT: Interrupt Output
  21. RST: Reset Input
  22. GPIO1: General Purpose I/O 1
  23. GPIO2: General Purpose I/O 2
  24. GPIO3: General Purpose I/O 3

Functional Features

  • Integrated synchronous boost and buck converters
  • Low quiescent current for improved battery life
  • Adjustable output voltage through feedback pin
  • Power good indicator for system monitoring
  • Interrupt request and interrupt outputs for system control
  • Reset input for device initialization
  • General purpose I/O pins for additional functionality

Advantages and Disadvantages

Advantages

  • High efficiency power management solution
  • Wide input voltage range for compatibility with various power sources
  • Compact wafer level package for space-constrained applications
  • Low power consumption for extended battery life
  • Flexible output voltage adjustment for different device requirements

Disadvantages

  • Limited maximum output current (1.5A)
  • Operating temperature range may not be suitable for extreme environments

Working Principles

The MAX14745FEWX+T is a power management IC designed to efficiently regulate power in portable devices. It incorporates both boost and buck converters, allowing it to step up or step down the input voltage as required by the device. The input voltage range of 2.7V to 5.5V makes it compatible with a wide range of power sources.

The IC features an adjustable output voltage, which can be set using the feedback pin. This allows for flexibility in powering different components within the device. The power good indicator provides a signal to the system indicating that the output voltage is within the desired range.

Interrupt request and interrupt outputs are available for system control purposes. These can be used to trigger specific actions or events based on certain conditions. The reset input allows for device initialization when required.

General purpose I/O pins provide additional functionality and can be used for various purposes depending on the specific application.

Detailed Application Field Plans

The MAX14745FEWX+T is suitable for a wide range of portable devices requiring efficient power management. Some potential application fields include:

  1. Smartphones and Tablets: The IC can regulate power for the various components in these devices, such as the display, processor, and wireless modules.

  2. Wearable Devices: Power management is crucial in wearable devices due to their small form factor and limited battery capacity. The MAX14745FEWX+T can efficiently manage power for sensors, displays, and communication modules.

  3. Portable Medical Devices: Medical devices often require precise power regulation to ensure accurate measurements and reliable operation. This IC can be used in devices such as blood glucose monitors, pulse oximeters, and portable ECG monitors.

  4. IoT (Internet of Things) Devices: With the increasing popularity of IoT devices, efficient power management becomes essential. The MAX14745FEWX+T can be utilized in smart home devices, environmental sensors, and other IoT applications.

Detailed and Complete Alternative Models

  1. MAX14746FEWX+T: Similar to MAX14745FEWX+T but with a higher maximum output current of 2A.
  2. MAX14747FEWX+T: A variant with additional features like integrated battery charger and fuel gauge functionality.
  3. MAX147

Seznam 10 běžných otázek a odpovědí souvisejících s aplikací MAX14745FEWX+T v technických řešeních

Sure! Here are 10 common questions and answers related to the application of MAX14745FEWX+T in technical solutions:

  1. Q: What is MAX14745FEWX+T? A: MAX14745FEWX+T is a highly integrated power management IC (PMIC) designed for use in portable devices, IoT applications, and other low-power systems.

  2. Q: What are the key features of MAX14745FEWX+T? A: Some key features include multiple voltage regulators, battery charging capability, power sequencing, GPIOs, and I2C/SPI interfaces.

  3. Q: Can MAX14745FEWX+T support multiple voltage rails? A: Yes, it can support up to six different voltage rails, making it suitable for powering various components in a system.

  4. Q: Does MAX14745FEWX+T have built-in battery charging functionality? A: Yes, it has a built-in charger that supports Li-ion/Li-polymer batteries with programmable charging current and voltage limits.

  5. Q: How does MAX14745FEWX+T handle power sequencing? A: It provides flexible power sequencing options through its power-on reset (POR) and enable pins, allowing controlled startup and shutdown of different power domains.

  6. Q: Can MAX14745FEWX+T be controlled using a microcontroller or processor? A: Yes, it can be easily controlled via an I2C or SPI interface, enabling communication with a host microcontroller or processor.

  7. Q: Is MAX14745FEWX+T suitable for low-power applications? A: Absolutely! It is designed to operate efficiently in low-power systems, offering high efficiency and low quiescent current.

  8. Q: Can MAX14745FEWX+T provide power to external devices? A: Yes, it has multiple GPIOs that can be used to supply power to external components or peripherals.

  9. Q: Does MAX14745FEWX+T have any built-in protection features? A: Yes, it includes various protection mechanisms such as overvoltage protection (OVP), undervoltage lockout (UVLO), and thermal shutdown.

  10. Q: What are some typical applications of MAX14745FEWX+T? A: It is commonly used in portable devices like smartphones, tablets, wearables, as well as IoT devices, industrial equipment, and other battery-powered systems.

Please note that the answers provided here are general and may vary depending on specific design requirements and application scenarios.