BQ24073RGTRG4 - English Editing Encyclopedia Entry

Product Overview

Category

BQ24073RGTRG4 belongs to the category of integrated circuits (ICs) specifically designed for battery charging applications.

Use

This product is primarily used for charging lithium-ion or lithium-polymer batteries in various electronic devices such as smartphones, tablets, portable media players, and other portable electronic devices.

Characteristics

• Input voltage range: 4.35V to 6.45V
• Output voltage range: 3.5V to 4.44V
• Charging current: Up to 1.5A
• Programmable charge termination current
• Thermal regulation and protection
• Battery temperature monitoring
• Integrated power FET
• Small form factor package

Package and Quantity

The BQ24073RGTRG4 is available in a small 20-pin QFN (Quad Flat No-Lead) package. It is typically sold in reels with a quantity of 2500 units per reel.

Specifications

• Input Voltage Range: 4.35V to 6.45V
• Output Voltage Range: 3.5V to 4.44V
• Charging Current: Up to 1.5A
• Charge Termination Current: Programmable
• Operating Temperature Range: -40°C to +85°C
• Package Type: 20-pin QFN

Pin Configuration

The BQ24073RGTRG4 has the following pin configuration:

1. VBUS: Input voltage from USB port
2. AC/DC: Input voltage from AC adapter
3. STAT1: Status indicator output
4. STAT2: Status indicator output
5. PG: Power good indicator output
6. TS: Battery temperature sense input
7. ISET: Charge current programming resistor connection
8. VSS: Ground
9. BAT: Battery connection
10. VOUT: Output voltage to the system
11. SYS: System voltage input
12. EN2: Enable input 2
13. EN1: Enable input 1
14. ILIM: Input current limit programming resistor connection
15. SDA: I2C data input/output
16. SCL: I2C clock input
17. TS/NTC: Battery temperature sense or NTC thermistor input
18. INT: Interrupt output
19. VDD: Supply voltage
20. NC: No connection

Functional Features

• Integrated power FET for efficient charging
• Programmable charge termination current for different battery capacities
• Thermal regulation and protection to prevent overheating
• Battery temperature monitoring for safe charging
• Status indicator outputs for visual feedback
• I2C interface for advanced control and monitoring capabilities
• Input current limit programming for compatibility with different power sources

Advantages and Disadvantages

Advantages

• High charging efficiency
• Flexible charge termination options
• Comprehensive thermal protection
• Accurate battery temperature monitoring
• Compact package size
• Advanced control and monitoring capabilities

Disadvantages

• Limited availability in certain regions
• Relatively higher cost compared to some alternatives

Working Principles

The BQ24073RGTRG4 operates by regulating the charging current and voltage to safely charge lithium-ion or lithium-polymer batteries. It utilizes an integrated power FET to efficiently transfer power from the input source to the battery. The charge termination current can be programmed to suit different battery capacities, ensuring optimal charging without overcharging.

Thermal regulation and protection mechanisms are implemented to prevent excessive heat generation during charging. The device continuously monitors the battery temperature and adjusts the charging parameters accordingly. This ensures safe and reliable charging while prolonging the battery's lifespan.

The BQ24073RGTRG4 also provides status indicator outputs, allowing the user to visually monitor the charging process. Additionally, it features an I2C interface for advanced control and monitoring capabilities, enabling integration with system-level battery management functions.

Detailed Application Field Plans

The BQ24073RGTRG4 is widely used in various portable electronic devices that require lithium-ion or lithium-polymer battery charging. Some specific application fields include:

1. Smartphones: The BQ24073RGTRG4 is commonly found in smartphones, providing efficient and safe charging for their built-in batteries.

2. Tablets: Tablets rely on the BQ24073RGTRG4 to ensure optimal charging of their high-capacity batteries, allowing users to enjoy extended usage times.

3. Portable Media Players: This IC is utilized in portable media players to facilitate quick and reliable charging, ensuring uninterrupted entertainment on the go.

4. Wearable Devices: The BQ24073RGTRG4 plays a crucial role in wearable devices such as smartwatches and fitness trackers, enabling convenient and efficient charging.

Detailed and Complete Alternative Models