BQ27441DRZR-G1A

Product Overview

Category

The BQ27441DRZR-G1A belongs to the category of integrated circuits (ICs) specifically designed for battery management.

Use

This IC is primarily used for fuel gauge applications in single-cell Li-ion and Li-polymer batteries. It accurately measures the battery's remaining capacity, voltage, temperature, and other parameters to provide reliable information about the battery's state of charge.

Characteristics

• High accuracy: The BQ27441DRZR-G1A offers precise measurements of battery parameters, ensuring accurate estimation of remaining capacity.
• Low power consumption: This IC operates with minimal power consumption, making it suitable for portable devices with limited energy resources.
• Small form factor: With its compact size, the BQ27441DRZR-G1A can be easily integrated into various electronic devices.
• Advanced features: It provides advanced features such as overvoltage protection, undervoltage detection, and temperature monitoring.

Package

The BQ27441DRZR-G1A is available in a small package, typically a 10-pin SON (Small Outline No-Lead) package.

Essence

The essence of the BQ27441DRZR-G1A lies in its ability to accurately monitor and report the state of charge of a single-cell Li-ion or Li-polymer battery.

Packaging/Quantity

The BQ27441DRZR-G1A is commonly packaged in reels, with a quantity of 2500 units per reel.

Specifications

• Operating Voltage Range: 2.5V to 4.8V
• Operating Temperature Range: -40°C to +85°C
• Communication Interface: I2C
• Battery Capacity Measurement Resolution: 1 mAh
• Fuel Gauge Accuracy: ±1%
• Standby Current: < 20 µA

Detailed Pin Configuration

The BQ27441DRZR-G1A has the following pin configuration:

1. VSS: Ground
2. SDA: I2C Serial Data
3. SCL: I2C Serial Clock
4. TS: Temperature Sense Input
5. BAT: Battery Voltage Sense Input
6. SRP: System Reset Output
7. GND: Ground
8. VDD: Power Supply
9. VSS: Ground
10. VSS: Ground

Functional Features

• Accurate fuel gauge measurements
• Overvoltage protection
• Undervoltage detection
• Temperature monitoring
• Programmable capacity alert
• Coulomb counter functionality
• Integrated self-discharge compensation

Advantages and Disadvantages

Advantages

• High accuracy in measuring battery parameters
• Low power consumption
• Compact size for easy integration
• Advanced features for enhanced battery management

Disadvantages

• Limited to single-cell Li-ion and Li-polymer batteries
• Requires I2C communication interface support

Working Principles

The BQ27441DRZR-G1A works by continuously monitoring the battery's voltage, current, and temperature. It uses sophisticated algorithms to estimate the remaining capacity based on these measurements. The IC also compensates for self-discharge and provides protection against overvoltage and undervoltage conditions.

Detailed Application Field Plans

The BQ27441DRZR-G1A is widely used in various applications that require accurate monitoring of single-cell Li-ion or Li-polymer batteries. Some common application fields include:

1. Portable electronic devices (e.g., smartphones, tablets, laptops)
2. Wearable devices (e.g., smartwatches, fitness trackers)
3. Medical devices (e.g., portable medical equipment, insulin pumps)
4. Industrial equipment (e.g., handheld tools, wireless sensors)
5. Electric vehicles (e.g., electric bicycles, scooters)

Detailed and Complete Alternative Models

1. BQ27441-G1A: Similar to the BQ27441DRZR-G1A but available in a different package.
2. BQ27441EVM-G1A: Evaluation module for testing and development purposes.
3. BQ27441-G1: Non-reel packaged version of the BQ27441DRZR-G1A.

These alternative models offer similar functionality and can be considered as substitutes for the BQ27441DRZR-G1A in various applications.

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