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MAX173CNG
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MAX173CNG

Product Overview

  • Category: Integrated Circuit (IC)
  • Use: Battery Fuel Gauge
  • Characteristics: Accurate battery capacity measurement, low power consumption, small package size
  • Package: 24-pin DIP (Dual In-line Package)
  • Essence: MAX173CNG is a battery fuel gauge IC designed to accurately measure the capacity of rechargeable batteries.
  • Packaging/Quantity: Available in tape and reel packaging, with 250 units per reel.

Specifications

  • Operating Voltage Range: 2.5V to 4.8V
  • Battery Chemistry Support: Li-Ion, Li-Polymer, LiFePO4
  • Capacity Measurement Accuracy: ±1%
  • Temperature Measurement Range: -40°C to +85°C
  • Interface: I2C
  • Standby Current: 7µA (typical)

Pin Configuration

The MAX173CNG has a total of 24 pins. The pin configuration is as follows:

  1. VDD: Power supply voltage input
  2. GND: Ground reference
  3. SDA: I2C data line
  4. SCL: I2C clock line
  5. INT: Interrupt output
  6. TS: Temperature sense input
  7. BAT: Battery voltage sense input
  8. STAT: Status output
  9. ALRT: Alert output
  10. VSSOP: Negative terminal of sense resistor
  11. VSSON: Negative terminal of sense resistor
  12. VDDOP: Positive terminal of sense resistor
  13. VDDON: Positive terminal of sense resistor
  14. VSS: Negative terminal of sense resistor
  15. VDD: Positive terminal of sense resistor
  16. VSS: Negative terminal of sense resistor
  17. VDD: Positive terminal of sense resistor
  18. VSS: Negative terminal of sense resistor
  19. VDD: Positive terminal of sense resistor
  20. VSS: Negative terminal of sense resistor
  21. VDD: Positive terminal of sense resistor
  22. VSS: Negative terminal of sense resistor
  23. VDD: Positive terminal of sense resistor
  24. VSS: Negative terminal of sense resistor

Functional Features

  • Accurate measurement of battery capacity
  • Low power consumption for extended battery life
  • Temperature compensation for accurate readings in varying conditions
  • I2C interface for easy integration with microcontrollers
  • Interrupt and alert outputs for system notifications

Advantages and Disadvantages

Advantages

  • Accurate battery capacity measurement helps optimize battery usage.
  • Low power consumption prolongs battery life.
  • Small package size allows for space-efficient designs.
  • Temperature compensation ensures accurate readings in different environments.

Disadvantages

  • Limited to specific battery chemistries (Li-Ion, Li-Polymer, LiFePO4).
  • Requires I2C interface support from the host system.

Working Principles

The MAX173CNG works by monitoring the voltage and current of the connected battery to accurately estimate its remaining capacity. It utilizes an internal algorithm that takes into account factors such as temperature and discharge rate to provide precise capacity measurements. The IC communicates with the host system through the I2C interface, allowing for real-time monitoring and control.

Application Field Plans

The MAX173CNG is suitable for a wide range of applications where accurate battery capacity measurement is crucial. Some potential application fields include:

  1. Portable electronic devices (smartphones, tablets, laptops)
  2. Wearable devices (smartwatches, fitness trackers)
  3. Medical devices (portable monitors, insulin pumps)
  4. Industrial equipment (handheld tools, wireless sensors)
  5. Automotive electronics (electric vehicles, hybrid vehicles)

Alternative Models

For those seeking alternative options, the following battery fuel gauge ICs can be considered:

  1. MAX17055: Similar features and specifications to MAX173CNG, but with a different package.
  2. BQ27441: Battery fuel gauge IC from Texas Instruments with comparable functionality.
  3. LTC2943: Integrated circuit from Linear Technology offering battery monitoring capabilities.

These alternatives provide similar functionality and can be evaluated based on specific project requirements.

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技術ソリューションにおける MAX173CNG の適用に関連する 10 件の一般的な質問と回答をリストします。

Sure! Here are 10 common questions and answers related to the application of MAX173CNG in technical solutions:

  1. Q: What is MAX173CNG? A: MAX173CNG is a high-accuracy fuel gauge IC (Integrated Circuit) designed for monitoring the state of charge (SOC) of lithium-ion batteries.

  2. Q: What are the key features of MAX173CNG? A: The key features of MAX173CNG include accurate SOC estimation, temperature compensation, programmable alert thresholds, low-power operation, and I2C communication interface.

  3. Q: How does MAX173CNG estimate the state of charge (SOC)? A: MAX173CNG uses a sophisticated algorithm that combines voltage, current, and temperature measurements to accurately estimate the SOC of the battery.

  4. Q: Can MAX173CNG be used with any type of lithium-ion battery? A: Yes, MAX173CNG can be used with various types of lithium-ion batteries, including LiCoO2, LiFePO4, LiMn2O4, and more.

  5. Q: What is temperature compensation in MAX173CNG? A: Temperature compensation is a feature that adjusts the SOC estimation based on the battery's temperature, ensuring accurate readings even in different temperature conditions.

  6. Q: Can MAX173CNG provide real-time battery health information? A: Yes, MAX173CNG provides real-time battery health information such as remaining capacity, time-to-empty, time-to-full, and cycle count.

  7. Q: How can I communicate with MAX173CNG? A: MAX173CNG supports I2C communication protocol, allowing easy integration with microcontrollers or other devices.

  8. Q: Can MAX173CNG generate alerts for specific battery conditions? A: Yes, MAX173CNG has programmable alert thresholds that can trigger an interrupt or set a flag when specific battery conditions are met, such as low SOC or high temperature.

  9. Q: Is MAX173CNG suitable for portable devices with limited power consumption? A: Yes, MAX173CNG is designed for low-power operation, making it suitable for portable devices where power efficiency is crucial.

  10. Q: Are there any evaluation kits available for MAX173CNG? A: Yes, Maxim Integrated provides evaluation kits and software tools to help developers quickly prototype and evaluate the performance of MAX173CNG in their applications.

Please note that these answers are general and may vary depending on the specific implementation and requirements of your technical solution.