BQ20Z80DBTR-V101

Overview

Category: Integrated Circuit (IC)

Use: Battery Fuel Gauge

Characteristics: - Measures and reports battery capacity - Monitors battery health and status - Provides accurate estimation of remaining battery life - Enables efficient power management

Package: DBT (Thin Shrink Small Outline Package)

Essence: The BQ20Z80DBTR-V101 is a highly integrated IC designed for battery fuel gauging applications. It accurately measures the capacity of a battery, monitors its health and status, and provides valuable information for efficient power management.

Packaging/Quantity: The BQ20Z80DBTR-V101 is available in a Thin Shrink Small Outline Package (DBT) and is typically sold in reels or tubes containing multiple units.

Specifications

• Operating Voltage Range: 2.7V to 4.8V
• Communication Interface: I2C
• Temperature Range: -40°C to +85°C
• Accuracy: ±1% (typical)
• Cell Balancing: Yes
• Gas Gauge Algorithm: Impedance Track™

Pin Configuration

The BQ20Z80DBTR-V101 has a total of 16 pins. Here is the 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. SRP - System Reset Output
8. SRN - System Reset Input
9. VDD - Power Supply
10. DSG - Discharge FET Control Output
11. DSR - Discharge Sense Resistor Connection
12. PACK+ - Positive Terminal of Battery Pack
13. PACK- - Negative Terminal of Battery Pack
14. VSS - Ground
15. VSS - Ground
16. VSS - Ground

Functional Features

1. Accurate Capacity Measurement: The BQ20Z80DBTR-V101 utilizes the Impedance Track™ gas gauge algorithm to accurately measure the capacity of the battery, providing reliable information about its remaining charge.

2. Health and Status Monitoring: This IC continuously monitors the health and status of the battery, including parameters like temperature, voltage, and current. It provides valuable data for battery management and diagnostics.

3. Efficient Power Management: By accurately estimating the remaining battery life, the BQ20Z80DBTR-V101 enables efficient power management in devices, allowing users to optimize their usage and plan accordingly.

4. Cell Balancing: The IC supports cell balancing, which helps equalize the charge levels of individual cells within a battery pack, improving overall performance and extending battery life.

Advantages and Disadvantages

Advantages: - Accurate capacity measurement - Comprehensive health and status monitoring - Efficient power management capabilities - Cell balancing feature enhances battery performance

Disadvantages: - Requires I2C communication interface - Limited operating temperature range (-40°C to +85°C)

Working Principles

The BQ20Z80DBTR-V101 works based on the Impedance Track™ gas gauge algorithm. It measures the impedance of the battery during different charge and discharge cycles to estimate its capacity accurately. By continuously monitoring various parameters like temperature, voltage, and current, it provides real-time information about the battery's health and status.

The IC communicates with the host device through the I2C interface, enabling seamless integration into various applications. It also supports cell balancing, which ensures that each cell within a battery pack is charged and discharged evenly, preventing imbalances and maximizing overall battery performance.

Application Field Plans

The BQ20Z80DBTR-V101 is widely used in various applications that require accurate battery fuel gauging and efficient power management. Some of the detailed application field plans include:

1. Portable Electronics: Smartphones, tablets, laptops, and other portable devices benefit from the accurate estimation of battery life provided by the BQ20Z80DBTR-V101. It enables users to plan their usage and optimize power consumption.

2. Electric Vehicles (EVs): The IC plays a crucial role in EVs by accurately measuring the battery capacity, monitoring its health, and providing real-time information to the vehicle's power management system. This ensures optimal utilization of the battery and enhances the driving range.

3. Energy Storage Systems: Battery energy storage systems rely on accurate battery fuel gauging for efficient energy management. The BQ20Z80DBTR-V101 provides the necessary capabilities to monitor and manage the stored energy effectively.

4. Medical Devices: Medical devices often operate on batteries and require precise monitoring of battery status. The BQ20Z80DBTR-V101 ensures reliable power management in