STMicroelectronics
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STC3115IQT
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STC3115IQT

Product Overview

Category

STC3115IQT belongs to the category of integrated battery fuel gauge ICs.

Use

The STC3115IQT is used for accurately monitoring the state of charge (SoC) and estimating the remaining capacity of single-cell Li-Ion batteries.

Characteristics

  • Accurate SoC measurement
  • High precision voltage and current measurement
  • Integrated 16-bit ADC
  • Low power consumption
  • Wide operating temperature range
  • Small form factor

Package

STC3115IQT is available in a small 10-pin QFN package.

Essence

The essence of STC3115IQT lies in its ability to provide accurate and reliable battery monitoring and estimation, ensuring optimal performance and longevity of Li-Ion batteries.

Packaging/Quantity

STC3115IQT is typically packaged in reels and available in quantities of 2500 units per reel.

Specifications

  • Operating Voltage: 2.7V to 4.5V
  • Operating Temperature Range: -40°C to +85°C
  • Battery Voltage Measurement Range: 0V to 4.3V
  • Current Measurement Range: ±3.84A
  • Resolution: 1.25μV/bit
  • Standby Current: 20μA
  • Communication Interface: I2C

Detailed Pin Configuration

  1. VSS: Ground
  2. SDA: I2C Data Line
  3. SCL: I2C Clock Line
  4. ALERT: Interrupt Output
  5. BAT: Battery Voltage Input
  6. TS: Temperature Sensor Input
  7. VDD: Power Supply
  8. VREF: Reference Voltage Output
  9. VSS: Ground
  10. VBAT: Battery Voltage Output

Functional Features

  • Accurate measurement of battery voltage and current
  • Real-time calculation of SoC and remaining capacity
  • Temperature compensation for improved accuracy
  • Programmable alarm thresholds for voltage and temperature
  • Low power consumption in standby mode
  • I2C interface for easy integration with microcontrollers

Advantages and Disadvantages

Advantages

  • Accurate and reliable battery monitoring
  • High precision measurement
  • Wide operating temperature range
  • Small form factor for space-constrained applications
  • Low power consumption

Disadvantages

  • Limited to single-cell Li-Ion batteries
  • Requires external temperature sensor for accurate temperature compensation

Working Principles

STC3115IQT utilizes a combination of voltage and current measurements along with advanced algorithms to accurately estimate the state of charge and remaining capacity of the battery. It compensates for temperature variations to ensure precise readings.

Detailed Application Field Plans

STC3115IQT finds applications in various fields, including: 1. Portable consumer electronics 2. Medical devices 3. Industrial equipment 4. Electric vehicles 5. Power tools

Detailed and Complete Alternative Models

  1. MAX17043: Integrated fuel gauge IC with high accuracy and low power consumption.
  2. BQ27441: Battery fuel gauge IC with integrated protection features.
  3. LTC2943: Multicell battery gas gauge with I2C interface and high accuracy.

These alternative models offer similar functionality and can be considered as alternatives to STC3115IQT based on specific application requirements.

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Noem 10 veelgestelde vragen en antwoorden met betrekking tot de toepassing van STC3115IQT in technische oplossingen

  1. Q: What is the operating voltage range of STC3115IQT? A: The operating voltage range of STC3115IQT is 2.7V to 4.5V.

  2. Q: What is the typical accuracy of the fuel gauge in STC3115IQT? A: The typical accuracy of the fuel gauge in STC3115IQT is ±1%.

  3. Q: Can STC3115IQT be used in portable electronic devices? A: Yes, STC3115IQT is suitable for use in portable electronic devices.

  4. Q: What is the maximum charge current supported by STC3115IQT? A: The maximum charge current supported by STC3115IQT is 2A.

  5. Q: Does STC3115IQT support temperature monitoring? A: Yes, STC3115IQT supports temperature monitoring.

  6. Q: What is the communication interface used by STC3115IQT? A: STC3115IQT uses an I2C communication interface.

  7. Q: Is STC3115IQT suitable for battery-powered IoT devices? A: Yes, STC3115IQT is suitable for battery-powered IoT devices.

  8. Q: What is the standby current consumption of STC3115IQT? A: The standby current consumption of STC3115IQT is typically 20µA.

  9. Q: Can STC3115IQT be used with lithium-ion batteries? A: Yes, STC3115IQT is compatible with lithium-ion batteries.

  10. Q: Does STC3115IQT have built-in protection features? A: Yes, STC3115IQT has built-in overvoltage, overcurrent, and overtemperature protection features.