BQ24166YFFT - English Editing Encyclopedia Entry

Product Overview

Category

The BQ24166YFFT belongs to the category of integrated circuits (ICs) specifically designed for battery charging applications.

Use

This IC is primarily used for managing and controlling the charging process of rechargeable batteries in various electronic devices.

Characteristics

• The BQ24166YFFT offers high efficiency charging, ensuring optimal use of power.
• It supports multiple charging modes, including fast charging and trickle charging.
• This IC incorporates advanced safety features to protect the battery and the device from overcharging, overvoltage, and overcurrent conditions.
• It is designed to be compact and lightweight, making it suitable for portable electronic devices.
• The BQ24166YFFT is compatible with a wide range of battery chemistries, such as lithium-ion (Li-ion) and lithium-polymer (LiPo).

Package and Quantity

The BQ24166YFFT is available in a small form factor package, typically a 20-pin QFN (Quad Flat No-Lead) package. It is commonly supplied in tape and reel packaging, with a quantity of 250 units per reel.

Specifications

• Input Voltage Range: 4.5V to 17V
• Charging Voltage Range: 3.5V to 4.44V
• Maximum Charging Current: 2A
• Operating Temperature Range: -40°C to 85°C
• Standby Current: <10µA
• Efficiency: Up to 95%

Pin Configuration

The BQ24166YFFT has a total of 20 pins, each serving a specific function. The pin configuration is as follows:

1. VIN: Input voltage pin
2. VBUS: USB input voltage pin
3. PGND: Power ground pin
4. STAT: Status output pin
5. TS: Temperature sense input pin
6. ISET: Charging current set pin
7. VREF: Reference voltage output pin
8. PROG: Programming pin
9. EN/UVLO: Enable/Undervoltage lockout pin
10. CE: Charge enable input pin
11. SRN: Synchronous rectification control pin
12. BAT: Battery voltage sense pin
13. TS/NTC: Thermistor input pin
14. TS2: Second temperature sense input pin
15. ILIM: Input current limit pin
16. SDA: I2C data pin
17. SCL: I2C clock pin
18. INT: Interrupt output pin
19. VOUT: Output voltage pin
20. PG: Power good output pin

Functional Features

• Fast Charging: The BQ24166YFFT supports high-speed charging, allowing devices to quickly recharge their batteries.
• Thermal Regulation: It incorporates a thermal regulation feature that adjusts the charging current based on the battery's temperature, ensuring safe and efficient charging.
• Dynamic Power Management: This IC dynamically manages power distribution between the input source and the battery, optimizing charging efficiency.
• Charge Status Indication: The STAT pin provides information about the charging status, enabling the device to display appropriate indicators or notifications.

Advantages and Disadvantages

Advantages

• High charging efficiency leads to reduced charging time.
• Comprehensive safety features protect the battery and the device from potential damage.
• Compact size and lightweight design make it suitable for portable electronic devices.
• Wide compatibility with various battery chemistries enhances its versatility.

Disadvantages

• Limited maximum charging current may not be suitable for devices requiring higher charging rates.
• Requires additional external components for complete charging circuit implementation.

Working Principles

The BQ24166YFFT operates by regulating the flow of current from the input source to the battery. It utilizes a combination of voltage and current control techniques to ensure efficient and safe charging. The IC continuously monitors the battery's voltage, temperature, and charging status to adjust the charging parameters accordingly.

Detailed Application Field Plans

The BQ24166YFFT finds applications in a wide range of electronic devices that require battery charging capabilities. Some notable application fields include: - Smartphones and tablets - Portable gaming consoles - Wearable devices - Wireless headphones and earbuds - Portable power banks

Detailed Alternative Models

For users seeking alternative options, several other ICs offer similar functionality to the BQ24166YFFT. Some notable alternatives include: - BQ24160YFFR - BQ24163YFFR - BQ24168YFFR - BQ24169YFFR

These alternative models provide comparable features and can be considered based on specific requirements and compatibility with the target application.

In conclusion, the BQ24166YFFT is a highly efficient integrated circuit designed for battery charging applications. Its compact size, comprehensive safety features, and compatibility with various