BQ24203DGN

Product Overview

Category

BQ24203DGN belongs to the category of integrated circuits (ICs) specifically designed for battery charging applications.

Use

This IC is commonly used in portable electronic devices, such as smartphones, tablets, and wearable devices, to efficiently charge lithium-ion batteries.

Characteristics

• High efficiency: The BQ24203DGN offers high charging efficiency, minimizing energy loss during the charging process.
• Fast charging: It supports fast charging protocols, allowing for quicker battery recharge times.
• Compact package: The IC comes in a small form factor package, making it suitable for space-constrained designs.
• Integrated protection features: It incorporates various protection mechanisms to ensure safe and reliable charging, including overvoltage protection, overcurrent protection, and thermal regulation.

Package and Quantity

The BQ24203DGN is available in a 8-pin plastic dual in-line package (DIP). It is typically sold in reels containing a specified quantity, usually 250 or 1000 units per reel.

Specifications

• Input voltage range: 4.35V to 6.45V
• Charging current: Up to 2A
• Programmable charge termination voltage
• Programmable charge current limit
• Thermal regulation and protection
• Power path management
• Battery temperature monitoring

Pin Configuration

The BQ24203DGN has the following pin configuration:

1. VIN: Input voltage
2. GND: Ground
3. TS: Temperature sense input
4. STAT: Status output
5. ISET: Charge current setting
6. PG: Power good output
7. VBAT: Battery voltage
8. VOUT: Output voltage

Functional Features

• Power path management: The IC allows simultaneous charging and discharging of the battery, enabling uninterrupted device operation even during charging.
• Programmable charging parameters: The BQ24203DGN provides flexibility in setting the charge termination voltage and current limit, allowing customization based on specific battery requirements.
• Thermal regulation: It incorporates thermal regulation to prevent overheating during charging, ensuring safe operation.
• Charging status indication: The STAT pin provides information about the charging status, such as charging in progress, charging complete, or fault conditions.

Advantages and Disadvantages

Advantages

• High charging efficiency reduces energy loss.
• Fast charging capability minimizes charging time.
• Integrated protection features ensure safe charging.
• Compact package size suits space-constrained designs.

Disadvantages

• Limited compatibility with certain battery chemistries.
• Requires external components for complete charging circuit implementation.

Working Principles

The BQ24203DGN operates by regulating the charging current and voltage supplied to the connected lithium-ion battery. It monitors the battery voltage, temperature, and charging status to ensure optimal charging performance while protecting against overvoltage, overcurrent, and overheating.

The IC employs a power path management technique that allows the device to draw power from both the input source and the battery simultaneously. This feature enables uninterrupted device operation even when the battery is being charged.

Detailed Application Field Plans

The BQ24203DGN is widely used in various portable electronic devices, including:

1. Smartphones: Enables fast and efficient charging of smartphone batteries, reducing downtime.
2. Tablets: Provides reliable and safe charging for tablet batteries, ensuring extended usage periods.
3. Wearable devices: Supports quick charging of wearable device batteries, enhancing user convenience.
4. Portable gaming consoles: Facilitates rapid charging of gaming console batteries, minimizing interruptions during gameplay.

Alternative Models

For those seeking alternative options, the following models offer similar functionality to the BQ24203DGN:

1. BQ24202DGN
2. BQ24204DGN
3. BQ24205DGN

These models share comparable specifications and features, making them suitable alternatives for battery charging applications.

In conclusion, the BQ24203DGN is a highly efficient integrated circuit designed for charging lithium-ion batteries in portable electronic devices. Its compact package, fast charging capability, and integrated protection features make it an ideal choice for various applications.