BQ2004HPN - English Editing Encyclopedia Entry

Product Overview

Category

BQ2004HPN belongs to the category of integrated circuits (ICs) used in battery charging applications.

Use

The BQ2004HPN IC is primarily used for managing and controlling the charging process of rechargeable batteries.

Characteristics

• The BQ2004HPN is a highly efficient charging IC designed for various battery chemistries.
• It offers precise voltage and current regulation during the charging process.
• The IC incorporates advanced safety features to prevent overcharging and overheating of batteries.
• It supports fast charging capabilities, reducing charging time significantly.
• BQ2004HPN is known for its low power consumption and high reliability.

Package and Quantity

The BQ2004HPN IC is available in a compact 8-pin plastic dual in-line package (PDIP). It is typically sold in reels or tubes containing multiple units.

Specifications

• Input Voltage Range: 4.5V to 10V
• Charging Current Range: 50mA to 1.5A
• Operating Temperature Range: -40°C to +85°C
• Control Interface: I2C (Inter-Integrated Circuit)

Pin Configuration

The BQ2004HPN IC features the following pin configuration:

Pin 1: VCC - Power supply input Pin 2: GND - Ground reference Pin 3: SDA - Serial data line (I2C) Pin 4: SCL - Serial clock line (I2C) Pin 5: BAT - Battery connection Pin 6: TS - Temperature sense input Pin 7: PROG - Programming pin Pin 8: STAT - Status output

Functional Features

1. Battery Charging Control: BQ2004HPN provides precise control over the charging process, ensuring optimal charging parameters for different battery chemistries.
2. Safety Features: The IC incorporates multiple safety mechanisms to prevent overcharging, over-discharging, and overheating of batteries, enhancing their lifespan and safety.
3. Fast Charging Support: BQ2004HPN supports fast charging techniques, reducing the overall charging time without compromising battery health.
4. Temperature Monitoring: The temperature sense input allows the IC to monitor battery temperature, preventing charging if it exceeds safe limits.
5. Status Indication: The status output pin provides information about the charging state, allowing external devices to monitor the charging progress.

Advantages and Disadvantages

Advantages

• Wide input voltage range enables compatibility with various power sources.
• Precise voltage and current regulation ensure accurate charging.
• Advanced safety features protect batteries from damage.
• Fast charging support reduces charging time.
• Low power consumption enhances energy efficiency.

Disadvantages

• Limited to I2C control interface, which may require additional components for compatibility with other communication protocols.
• Availability and pricing may vary depending on the supplier and market demand.

Working Principles

The BQ2004HPN IC operates by monitoring the battery voltage, current, and temperature during the charging process. It uses this information to regulate the charging parameters and ensure safe and efficient charging. The IC communicates with an external microcontroller or host device through the I2C interface, allowing for easy integration into various charging systems.

Application Field Plans

The BQ2004HPN IC finds applications in a wide range of battery-powered devices, including: 1. Portable electronic devices (e.g., smartphones, tablets) 2. Power tools and cordless appliances 3. Electric vehicles and hybrid electric vehicles 4. Energy storage systems 5. Medical devices 6. Industrial equipment

Alternative Models

1. BQ2004H - Similar to BQ2004HPN but with a different package (SOIC-8).
2. BQ2004HN - Enhanced version with additional features like battery authentication and fuel gauge functionality.
3. BQ2004HNE4 - Pin-to-pin compatible alternative with improved efficiency and extended temperature range.

These alternative models offer similar functionality to the BQ2004HPN, providing flexibility in choosing the most suitable IC for specific applications.

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