BQ2004EPN - English Editing Encyclopedia Entry

Product Overview

Category

BQ2004EPN belongs to the category of integrated circuits (ICs) specifically designed for battery charging applications.

Use

The primary use of BQ2004EPN is to regulate and control the charging process of batteries, ensuring optimal performance and safety.

Characteristics

• BQ2004EPN is a highly efficient charging IC that offers precise control over the charging parameters.
• It supports various battery chemistries such as lithium-ion, nickel-cadmium, and lead-acid.
• The IC incorporates advanced safety features like overcharge protection, short-circuit detection, and thermal regulation.
• It is designed to operate within a wide temperature range, making it suitable for diverse environments.

Package and Quantity

BQ2004EPN is available in a compact and industry-standard 16-pin dual-in-line package (DIP). It is typically sold in reels or tubes containing multiple units.

Specifications

• Input Voltage Range: 4.5V to 26V
• Charging Current Range: 100mA to 2A
• Operating Temperature Range: -40°C to +85°C
• Control Interface: I2C (Inter-Integrated Circuit)

Pin Configuration (Detailed)

1. VCC - Power supply input
2. GND - Ground reference
3. SDA - Serial data line (I2C)
4. SCL - Serial clock line (I2C)
5. BAT - Battery voltage sense input
6. TS - Temperature sense input
7. PROG - Programming pin for setting charging parameters
8. STAT - Status output pin
9. CE - Charge enable input
10. VSS - Negative terminal of the charge pump capacitor
11. VDD - Positive terminal of the charge pump capacitor
12. VREF - Reference voltage output
13. VREG - Regulated output voltage
14. ISET - Current sense input
15. THERM - Thermal regulation input
16. NC - No connection

Functional Features

• BQ2004EPN provides accurate and reliable charging control, ensuring optimal battery performance.
• It supports multiple charging modes such as constant current, constant voltage, and trickle charge.
• The IC incorporates a programmable charge termination algorithm for precise charging completion.
• It offers comprehensive protection features like overvoltage, overcurrent, and over-temperature protection.

Advantages

• Wide input voltage range allows compatibility with various power sources.
• Versatile charging capabilities make it suitable for different battery chemistries.
• Advanced safety features ensure protection against potential hazards.
• Compact package enables easy integration into various electronic devices.

Disadvantages

• Limited availability of alternative models from other manufacturers.
• Requires knowledge of I2C communication protocol for proper configuration.

Working Principles

BQ2004EPN utilizes a combination of voltage and current sensing techniques to regulate the charging process. It continuously monitors the battery's voltage and adjusts the charging current accordingly. The IC also measures the battery temperature to prevent overheating during charging.

Detailed Application Field Plans

BQ2004EPN finds applications in various fields, including: 1. Portable electronic devices (e.g., smartphones, tablets) - for efficient and safe battery charging. 2. Electric vehicles - to control the charging of traction batteries. 3. Renewable energy systems - for managing the charging of backup batteries. 4. Industrial equipment - to regulate the charging of batteries used in machinery.

Alternative Models

While BQ2004EPN is a widely used charging IC, there are alternative models available from other manufacturers that offer similar functionality. Some notable alternatives include: - MAX1555 by Maxim Integrated - MCP73831 by Microchip Technology - LTC4054 by Linear Technology

In conclusion, BQ2004EPN is a versatile and efficient charging IC designed for battery charging applications. Its precise control, safety features, and compatibility with various battery chemistries make it a popular choice in the industry.

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