BQ2004ESN - English Editing Encyclopedia Entry

Product Overview

Category

BQ2004ESN belongs to the category of integrated circuits (ICs) specifically designed for battery charging applications.

Use

The primary use of BQ2004ESN is to regulate and control the charging process of batteries, ensuring efficient and safe charging.

Characteristics

• BQ2004ESN is a highly reliable and versatile IC with advanced charging algorithms.
• It supports various battery chemistries such as lithium-ion, nickel-cadmium, and lead-acid.
• The IC incorporates multiple safety features to prevent overcharging, over-discharging, and overheating of batteries.
• It offers precise voltage and current regulation during the charging process.
• BQ2004ESN is designed to operate in a wide temperature range, making it suitable for diverse environments.

Package and Quantity

BQ2004ESN is available in a compact and industry-standard package, typically a 16-pin small outline integrated circuit (SOIC). It is commonly sold in reels or tubes containing a quantity of 250 units per package.

Specifications

• Input Voltage Range: 4.5V to 26V
• Charging Current Range: 100mA to 2A
• Operating Temperature Range: -40°C to +85°C
• Battery Chemistry Compatibility: Lithium-ion, Nickel-Cadmium, Lead-Acid
• Communication Interface: I2C (Inter-Integrated Circuit)

Pin Configuration

The pin configuration of BQ2004ESN is as follows:

1. VCC - Power supply input
2. GND - Ground reference
3. SDA - I2C data line
4. SCL - I2C clock line
5. BAT - Battery connection
6. TS - Temperature sense input
7. PROG - Programming pin
8. STAT - Status output
9. VSS - Negative supply voltage
10. VREF - Reference voltage output
11. SRP - Sense resistor programming pin
12. SRN - Sense resistor programming pin
13. ISET - Charging current set pin
14. VBAT - Battery voltage sense input
15. VDD - Positive supply voltage
16. NC - No connection

Functional Features

• BQ2004ESN incorporates advanced charging algorithms that optimize the charging process for different battery chemistries.
• It provides accurate monitoring and control of charging voltage and current, ensuring optimal charging efficiency.
• The IC offers protection against overcharging, over-discharging, and overheating, enhancing battery safety and lifespan.
• BQ2004ESN supports communication through the I2C interface, enabling external control and monitoring of the charging process.
• It features programmable options for charging parameters, allowing customization based on specific battery requirements.

Advantages and Disadvantages

Advantages

• Versatile compatibility with various battery chemistries.
• Precise voltage and current regulation during charging.
• Multiple safety features for enhanced battery protection.
• Customizable charging parameters.
• Compact and industry-standard package.

Disadvantages

• Limited charging current range compared to some other ICs in the market.
• Requires external components for complete charging circuit implementation.

Working Principles

BQ2004ESN operates based on a combination of charging algorithms and control circuitry. When connected to a power source and a battery, it continuously monitors the battery's voltage, current, and temperature. Based on this information, it adjusts the charging parameters to ensure efficient and safe charging. The IC regulates the charging voltage and current to prevent overcharging or damaging the battery. It also incorporates safety measures to protect against over-discharging and overheating.

Application Field Plans

BQ2004ESN finds applications in various fields where battery charging is required. Some of the common application areas include: - Portable electronic devices (e.g., smartphones, tablets) - Power tools and equipment - Electric vehicles and hybrid vehicles - Renewable energy systems (e.g., solar power systems) - Industrial automation and control systems

Alternative Models

For those seeking alternative models with similar functionalities, the following ICs can be considered: - BQ2002SN - BQ2003SN - BQ2005SN - BQ2006SN

These alternatives offer comparable features and are compatible with a wide range of battery chemistries.

In conclusion, BQ2004ESN is a reliable and versatile integrated circuit designed for battery charging applications. With its advanced charging algorithms, safety features, and compatibility with multiple battery chemistries, it provides efficient and safe charging solutions across various industries.