BQ20Z655DBT-R1

Product Overview

Category

BQ20Z655DBT-R1 belongs to the category of battery fuel gauge ICs.

Use

This product is primarily used for accurately measuring and monitoring the state of charge (SOC) and remaining capacity of rechargeable batteries.

Characteristics

• Accurate SOC measurement
• Precise remaining capacity estimation
• Integrated protection features
• Low power consumption
• Wide operating temperature range

Package

BQ20Z655DBT-R1 is available in a small form factor package, typically a 30-pin TSSOP (Thin Shrink Small Outline Package).

Essence

The essence of BQ20Z655DBT-R1 lies in its ability to provide reliable and accurate information about the battery's state of charge, enabling efficient utilization and management of battery resources.

Packaging/Quantity

This product is typically sold in reels or tubes containing a specified quantity of ICs, such as 2500 units per reel.

Specifications

• Operating Voltage: 2.7V to 4.5V
• Temperature Range: -40°C to +85°C
• Communication Interface: I2C
• Battery Chemistry Support: Li-Ion, Li-Polymer
• Cell Count: Up to 4 series cells
• Accuracy: ±1% SOC, ±10mV voltage

Detailed Pin Configuration

1. VSS - Ground
2. SDA - I2C Data Line
3. SCL - I2C Clock Line
4. TS1 - Temperature Sense Input 1
5. TS2 - Temperature Sense Input 2
6. BAT - Battery Voltage Sense Input
7. VDD - Power Supply
8. XOUT - Crystal Oscillator Output
9. XIN - Crystal Oscillator Input
10. VSS - Ground
11. VSS - Ground
12. BATC - Battery Charge Current Sense Input
13. SRP - System Reset Output
14. SDA - I2C Data Line
15. SCL - I2C Clock Line
16. TS1 - Temperature Sense Input 1
17. TS2 - Temperature Sense Input 2
18. BAT - Battery Voltage Sense Input
19. VDD - Power Supply
20. XOUT - Crystal Oscillator Output
21. XIN - Crystal Oscillator Input
22. VSS - Ground
23. VSS - Ground
24. BATC - Battery Charge Current Sense Input
25. SRP - System Reset Output
26. VSS - Ground
27. VSS - Ground
28. VSS - Ground
29. VSS - Ground
30. VSS - Ground

Functional Features

• Accurate SOC estimation using advanced algorithms
• Real-time voltage and temperature monitoring
• Integrated protection against overcharging, over-discharging, and short circuits
• Low power consumption for extended battery life
• Programmable features for customization

Advantages and Disadvantages

Advantages

• High accuracy in SOC measurement
• Integrated protection features ensure battery safety
• Wide operating temperature range allows usage in various environments
• Low power consumption prolongs battery life
• Customizable features provide flexibility

Disadvantages

• Limited support for battery chemistries other than Li-Ion and Li-Polymer
• Requires an external crystal oscillator for accurate timekeeping

Working Principles

BQ20Z655DBT-R1 utilizes a combination of voltage and temperature measurements to estimate the state of charge of the battery accurately. It employs sophisticated algorithms to compensate for variations in battery performance over time and under different operating conditions.

The IC continuously monitors the battery voltage and temperature, updating the SOC estimation in real-time. It also provides protection against overcharging, over-discharging, and short circuits to ensure the safety of the battery and the connected system.

Detailed Application Field Plans

BQ20Z655DBT-R1 finds applications in various fields where accurate monitoring and management of battery capacity are crucial. Some potential application areas include:

1. Portable electronic devices (e.g., smartphones, tablets)
2. Laptop computers
3. Electric vehicles
4. Energy storage systems
5. Medical devices
6. Industrial equipment

Detailed and Complete Alternative Models

1. BQ34Z100-G1: Similar functionality with enhanced accuracy and additional features.
2. MAX17048G+: Low-power fuel gauge IC with I2C interface.
3. LTC2943: Battery gas gauge with integrated coulomb counter and temperature monitor.
4. DS2788: Stand-alone fuel gauge IC with SHA-1 authentication.

These alternative models offer similar capabilities to BQ20Z655DBT-R1 and can be considered based on specific requirements and preferences.

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