BQ24450DW

Product Overview

Category

BQ24450DW belongs to the category of integrated circuits (ICs) specifically designed for battery charging applications.

Use

The BQ24450DW is primarily used for managing and controlling the charging process of rechargeable batteries. It provides a reliable and efficient solution for charging various types of batteries, including lead-acid and lithium-ion batteries.

Characteristics

• The BQ24450DW offers a high level of accuracy and precision in battery charging, ensuring optimal performance and longevity of the battery.
• It incorporates advanced charging algorithms and safety features to prevent overcharging, over-discharging, and overheating of the battery.
• The IC is designed to operate within a wide temperature range, making it suitable for use in diverse environments.
• It supports both fast charging and trickle charging modes, allowing flexibility in charging requirements.
• The BQ24450DW is compact in size and requires minimal external components, simplifying the overall design and reducing costs.

Package

The BQ24450DW is available in a small outline package (SOP) with a specified pin configuration. The package ensures easy integration into various electronic systems and provides protection against environmental factors.

Essence

The essence of the BQ24450DW lies in its ability to efficiently charge batteries while ensuring their safety and longevity. It combines intelligent charging algorithms, accurate voltage and current regulation, and comprehensive protection mechanisms to deliver optimal charging performance.

Packaging/Quantity

The BQ24450DW is typically supplied in reels or tubes, depending on the manufacturer's packaging standards. The quantity per package varies but is commonly available in quantities of 250 or 1000 units.

Specifications

• Input Voltage Range: 4.5V to 26V
• Charging Voltage Range: 2V to 20V
• Maximum Charging Current: 2A
• Operating Temperature Range: -40°C to 85°C
• Package Type: SOP-8

Detailed Pin Configuration

The BQ24450DW features an SOP-8 package with the following pin configuration:

1. VCC: Power supply input
2. GND: Ground reference
3. BAT: Battery connection terminal
4. PROG: Programming pin for setting charging parameters
5. ISET: Current sense input for regulating charging current
6. STAT: Status output pin indicating charging status
7. TS: Temperature sense input for thermal management
8. VFB: Feedback voltage input for regulating charging voltage

Functional Features

1. Accurate Charging Control: The BQ24450DW employs advanced charging algorithms and precise voltage/current regulation to ensure accurate and efficient charging of batteries.
2. Comprehensive Protection Mechanisms: It incorporates various safety features such as overvoltage protection, overcurrent protection, and thermal shutdown to safeguard the battery and charging circuitry from potential damage.
3. Flexible Charging Modes: The IC supports both fast charging and trickle charging modes, allowing users to choose the appropriate charging method based on their specific requirements.
4. Temperature Compensation: The BQ24450DW includes temperature sensing capabilities to adjust the charging parameters based on the battery's temperature, ensuring optimal charging performance across different environmental conditions.

Advantages and Disadvantages

Advantages

• High accuracy and precision in battery charging
• Comprehensive protection mechanisms for enhanced safety
• Flexible charging modes for diverse applications
• Compact size and minimal external components required
• Temperature compensation for optimal charging performance

Disadvantages

• Limited maximum charging current (2A)
• Restricted input voltage range (4.5V to 26V)

Working Principles

The BQ24450DW operates by monitoring the battery voltage, current, and temperature during the charging process. It uses this information to regulate the charging voltage and current, ensuring that the battery is charged optimally without exceeding its limits. The IC continuously adjusts the charging parameters based on the battery's characteristics and environmental conditions, providing a reliable and efficient charging solution.

Detailed Application Field Plans

The BQ24450DW finds applications in various fields where battery charging is required. Some of the potential application areas include: - Portable electronic devices (e.g., smartphones, tablets) - Electric vehicles and hybrid electric vehicles - Renewable energy systems (e.g., solar power systems) - Industrial equipment and machinery - Medical devices

Detailed and Complete Alternative Models

1. BQ24650: Similar to the BQ24450DW, this IC offers higher maximum charging current (up to 5A) and an extended input voltage range (4.5V to 40V).
2. BQ24150: This alternative model provides similar functionality but is designed specifically for single-cell lithium-ion batteries.
3. BQ20350: Designed for lead-acid batteries, this IC offers comparable charging control and protection features.

These alternative models can be considered based