BQ24705RGERG4 - English Editing Encyclopedia Entry

Product Overview

Category

BQ24705RGERG4 belongs to the category of integrated circuits (ICs) specifically designed for battery charging applications.

Use

This product is primarily used in electronic devices that require efficient and reliable battery charging capabilities. It is commonly found in laptops, tablets, smartphones, and other portable electronic devices.

Characteristics

• High efficiency: The BQ24705RGERG4 offers high charging efficiency, ensuring optimal use of power and minimizing energy wastage.
• Fast charging: This IC supports fast charging protocols, allowing devices to charge quickly and efficiently.
• Advanced protection features: It incorporates various protection mechanisms such as overvoltage protection, overcurrent protection, and thermal shutdown, ensuring safe and reliable charging operations.
• Compact package: The BQ24705RGERG4 comes in a small form factor package, making it suitable for space-constrained designs.
• RoHS compliant: This product adheres to the Restriction of Hazardous Substances (RoHS) directive, ensuring environmental friendliness.

Package and Quantity

The BQ24705RGERG4 is available in a 24-pin VQFN (Very Thin Quad Flat No-Lead) package. It is typically sold in reels containing a quantity of 250 units.

Specifications

• Input voltage range: 4.5V to 19V
• Charging voltage range: 3.6V to 24V
• Maximum charging current: 8A
• Operating temperature range: -40°C to 85°C
• Control interface: I2C (Inter-Integrated Circuit)

Pin Configuration

The BQ24705RGERG4 has a total of 24 pins. Here is a detailed pin configuration:

1. VIN: Input voltage
2. GND: Ground
3. ACOK: AC adapter present indication
4. ACSEL: AC adapter selection control
5. ISET: Charging current setting
6. TS: Temperature sense input
7. SRN: Serial data receive and transmit
8. SCL: Serial clock
9. INT: Interrupt output
10. VREF: Reference voltage output
11. BAT: Battery voltage output
12. PGOOD: Power good indication
13. ILIM: Current limit setting
14. VSS: Ground
15. VSS: Ground
16. VSS: Ground
17. VSS: Ground
18. VSS: Ground
19. VSS: Ground
20. VSS: Ground
21. VSS: Ground
22. VSS: Ground
23. VSS: Ground
24. VDD: Supply voltage

Functional Features

• Dynamic power management: The BQ24705RGERG4 dynamically adjusts the charging current based on the battery's state of charge, optimizing the charging process.
• Input source selection: It allows seamless switching between different power sources, such as AC adapter or USB, ensuring uninterrupted charging.
• System power monitoring: This IC provides accurate monitoring of system power consumption, enabling efficient power management.
• LED indicators: It supports LED indicators for visual feedback on charging status and fault conditions.

Advantages and Disadvantages

Advantages

• High charging efficiency leads to reduced energy wastage.
• Fast charging capability saves time.
• Advanced protection features ensure safe charging operations.
• Compact package enables space-saving designs.
• RoHS compliance promotes environmental sustainability.

Disadvantages

• Limited maximum charging current may not be suitable for high-power devices.
• Requires an external microcontroller or host system for full functionality.

Working Principles

The BQ24705RGERG4 operates by regulating the charging current and voltage supplied to the battery. It continuously monitors the battery's state of charge, temperature, and input power source to optimize the charging process. The IC dynamically adjusts the charging parameters to ensure efficient and safe charging while protecting the battery from overvoltage, overcurrent, and overheating.

Detailed Application Field Plans

The BQ24705RGERG4 is widely used in various portable electronic devices, including but not limited to: - Laptops - Tablets - Smartphones - Portable gaming consoles - Portable medical devices - Portable audio players

Its versatile nature and compact package make it suitable for a broad range of applications where efficient and reliable battery charging is essential.

Detailed Alternative Models

For those seeking alternative models with similar functionality, the following options are available: - BQ24707RGRR - BQ24725RGRR - BQ24727RGRR - BQ24735RGRR

These alternatives offer comparable features and can be considered based on specific design requirements and availability.

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