BQ2005STR

Product Overview

Category: Integrated Circuit (IC)

Use: Battery Charge Management

Characteristics: - High accuracy battery charge management - Fast charging capability - Temperature monitoring and protection - Overvoltage and undervoltage protection - Small form factor

Package: Small Outline Transistor (SOT) package

Essence: The BQ2005STR is an integrated circuit designed for battery charge management. It provides accurate and efficient charging for various battery types.

Packaging/Quantity: The BQ2005STR is typically sold in reels or tubes, with a quantity of 2500 units per reel/tube.

Specifications

The BQ2005STR has the following specifications:

• Input Voltage Range: 4.5V to 26V
• Charge Voltage Range: 2.7V to 18V
• Charge Current Range: 10mA to 1.5A
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The BQ2005STR has the following pin configuration:

1. VCC: Power supply input
2. GND: Ground reference
3. TS: Temperature sense input
4. BAT: Battery voltage sense input
5. PROG: Charge current programming input
6. STAT: Status output
7. DSG: Discharge control output
8. CHG: Charge control output

Functional Features

The BQ2005STR offers the following functional features:

1. Accurate Battery Charging: The IC ensures precise charging of batteries by monitoring voltage, current, and temperature.
2. Fast Charging Capability: The BQ2005STR supports fast charging, reducing the charging time for batteries.
3. Temperature Monitoring and Protection: It includes temperature sensing to prevent overheating during charging.
4. Overvoltage and Undervoltage Protection: The IC safeguards the battery by monitoring voltage levels and preventing overcharging or deep discharge.
5. Small Form Factor: The BQ2005STR is designed in a compact package, making it suitable for space-constrained applications.

Advantages and Disadvantages

Advantages: - Accurate and efficient battery charging - Fast charging capability - Temperature monitoring and protection - Overvoltage and undervoltage protection - Compact size

Disadvantages: - Limited charge current range (10mA to 1.5A) - Restricted operating temperature range (-40°C to +85°C)

Working Principles

The BQ2005STR operates based on a charge management algorithm that monitors the battery voltage, current, and temperature. It adjusts the charging parameters accordingly to ensure optimal charging efficiency and battery health. The IC also provides various protection mechanisms to prevent overcharging, overheating, and deep discharge.

Detailed Application Field Plans

The BQ2005STR is commonly used in the following application fields:

1. Portable Electronics: It is widely employed in smartphones, tablets, portable media players, and other battery-powered devices.
2. Power Tools: The IC finds application in cordless power tools, ensuring efficient and safe battery charging.
3. Electric Vehicles: It is utilized in electric vehicle charging systems to manage the charging process and protect the battery.

Detailed and Complete Alternative Models

Some alternative models to the BQ2005STR include:

1. BQ2000: A similar IC with basic battery charge management features.
2. BQ2050: Offers advanced battery charge management capabilities with additional communication interfaces.
3. BQ24650: Suitable for higher power applications, supporting charge currents up to 5A.

These alternative models provide different features and specifications to cater to diverse charging requirements.

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