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MAX17021GTL+T
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MAX17021GTL+T

Product Overview

  • Category: Integrated Circuit (IC)
  • Use: Power Management
  • Characteristics: Low-power fuel gauge for single-cell lithium-ion (Li+) batteries
  • Package: 12-pin TDFN (3mm x 3mm)
  • Essence: Accurate battery capacity measurement and monitoring
  • Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

  • Input Voltage Range: 2.5V to 4.5V
  • Operating Temperature Range: -40°C to +85°C
  • Battery Capacity Measurement Accuracy: ±1%
  • Standby Current: 7µA (typical)
  • Shutdown Current: 0.1µA (typical)

Pin Configuration

The MAX17021GTL+T has the following pin configuration:

  1. VDD: Power Supply Input
  2. GND: Ground
  3. SDA: I²C Serial Data Input/Output
  4. SCL: I²C Serial Clock Input
  5. ALRT: Alert Output
  6. TS: Thermistor Input
  7. BAT: Battery Connection
  8. NC: No Connect
  9. NC: No Connect
  10. NC: No Connect
  11. NC: No Connect
  12. NC: No Connect

Functional Features

  • Accurate battery capacity estimation
  • Programmable alert thresholds
  • Temperature compensation for accurate measurements
  • Low power consumption
  • I²C interface for easy integration with microcontrollers

Advantages

  • High accuracy in measuring battery capacity
  • Low standby and shutdown currents for extended battery life
  • Compact package size for space-constrained applications
  • Easy integration with microcontrollers through I²C interface

Disadvantages

  • Limited to single-cell Li+ batteries
  • Requires external thermistor for temperature compensation

Working Principles

The MAX17021GTL+T is a low-power fuel gauge IC designed for single-cell Li+ batteries. It utilizes a sophisticated algorithm to accurately estimate the battery's remaining capacity. The IC measures the battery voltage, current, and temperature to calculate the state of charge (SOC) and remaining capacity.

By utilizing temperature compensation, the MAX17021GTL+T ensures accurate measurements across a wide range of operating temperatures. The IC also provides programmable alert thresholds, allowing the system to take appropriate actions when the battery capacity reaches critical levels.

Application Field Plans

The MAX17021GTL+T is widely used in various applications that require accurate monitoring of single-cell Li+ battery capacity. Some common application fields include:

  1. Portable electronic devices (e.g., smartphones, tablets)
  2. Wearable devices (e.g., smartwatches, fitness trackers)
  3. Internet of Things (IoT) devices
  4. Medical devices
  5. Industrial equipment

Alternative Models

For those seeking alternative options, here are some detailed and complete alternative models to consider:

  1. MAX17043G+U: Low-power fuel gauge for single-cell Li+ batteries with integrated protector
  2. BQ27441-G1: Battery fuel gauge with integrated protection and authentication
  3. LTC2943: Wide range I²C system monitor for multicell battery stacks

These alternative models offer similar functionality and can be suitable replacements depending on specific requirements.

In conclusion, the MAX17021GTL+T is a highly accurate and low-power fuel gauge IC designed for single-cell Li+ batteries. Its compact package, temperature compensation, and programmable features make it an ideal choice for various portable and IoT devices.

技術ソリューションにおける MAX17021GTL+T 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 MAX17021GTL+T in technical solutions:

  1. Q: What is the MAX17021GTL+T? A: The MAX17021GTL+T is a fuel gauge IC (integrated circuit) designed for accurately measuring the remaining capacity of a battery.

  2. Q: What type of batteries can the MAX17021GTL+T work with? A: The MAX17021GTL+T is compatible with lithium-ion (Li-ion) and lithium-polymer (Li-Po) batteries.

  3. Q: How does the MAX17021GTL+T measure battery capacity? A: It uses a sophisticated algorithm that measures the battery's voltage, current, temperature, and other parameters to estimate its remaining capacity.

  4. Q: Can the MAX17021GTL+T be used in portable devices? A: Yes, the MAX17021GTL+T is commonly used in portable devices such as smartphones, tablets, wearables, and other battery-powered electronics.

  5. Q: Does the MAX17021GTL+T require calibration? A: No, the MAX17021GTL+T is factory-calibrated and does not require additional calibration during normal operation.

  6. Q: Can the MAX17021GTL+T communicate with a microcontroller or host system? A: Yes, it supports I2C communication, allowing it to interface with microcontrollers or host systems for data exchange and control.

  7. Q: What is the accuracy of the MAX17021GTL+T's battery capacity measurement? A: The MAX17021GTL+T has a typical accuracy of ±1% for battery capacity estimation.

  8. Q: Does the MAX17021GTL+T provide real-time battery voltage monitoring? A: Yes, it continuously monitors the battery voltage and provides accurate readings for real-time voltage monitoring.

  9. Q: Can the MAX17021GTL+T detect battery faults or abnormal conditions? A: Yes, it includes built-in features to detect and report battery faults such as overvoltage, undervoltage, and overcurrent conditions.

  10. Q: Is the MAX17021GTL+T available in different package options? A: Yes, the MAX17021GTL+T is available in a small 12-pin TDFN (Thin Dual Flat No-Lead) package, which is suitable for space-constrained applications.

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