BQ24140YFFT - English Editing Encyclopedia Entry

Product Overview

Category

The BQ24140YFFT 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 BQ24140YFFT 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 from overcharging, overvoltage, and overcurrent.
• It is designed to be compact and lightweight, making it suitable for portable electronic devices.
• The BQ24140YFFT operates with a wide input voltage range, enhancing its versatility.

Package

The BQ24140YFFT is available in a small form factor package, such as a 20-pin QFN (Quad Flat No-Lead) package. This package type ensures easy integration into circuit boards and provides efficient heat dissipation.

Essence

The essence of the BQ24140YFFT lies in its ability to efficiently charge batteries while ensuring their safety and longevity.

Packaging/Quantity

The BQ24140YFFT is typically sold in reels or tubes, containing a specific quantity of ICs per package. The exact packaging and quantity may vary depending on the supplier.

Specifications

• Input Voltage Range: 4.35V to 6.45V
• Charging Voltage Range: 3.5V to 4.44V
• Charging Current Range: Up to 2A
• Operating Temperature Range: -40°C to +85°C
• Control Interface: I2C (Inter-Integrated Circuit)

Detailed Pin Configuration

The BQ24140YFFT features a 20-pin QFN package with the following pin configuration:

1. VIN: Input voltage
2. VBUS: USB input voltage
3. PGND: Power ground
4. SYS: System output voltage
5. TS: Temperature sense input
6. ISET: Charging current set
7. STAT: Status indication
8. CE: Charge enable control
9. SDA: I2C data line
10. SCL: I2C clock line
11. INT: Interrupt output
12. TS/NTC: Temperature sense or NTC thermistor input
13. BAT: Battery voltage
14. TS/NTC: Temperature sense or NTC thermistor input
15. ILIM: Input current limit
16. TS/NTC: Temperature sense or NTC thermistor input
17. TS/NTC: Temperature sense or NTC thermistor input
18. GND: Ground
19. VOUT: Output voltage
20. VREF: Reference voltage

Functional Features

• Fast Charging: The BQ24140YFFT supports fast charging modes, allowing for quicker battery replenishment.
• Thermal Regulation: It incorporates thermal regulation to prevent overheating during the charging process.
• Charge Termination: The IC automatically terminates the charging process when the battery reaches its full capacity.
• Safety Protection: It includes various safety features like overvoltage protection, overcurrent protection, and thermal shutdown to safeguard the battery and the device.

Advantages and Disadvantages

Advantages

• High charging efficiency ensures optimal use of power.
• Multiple charging modes cater to different battery requirements.
• Compact and lightweight design facilitates integration into portable devices.
• Advanced safety features protect the battery from potential damage.

Disadvantages

• Limited availability of alternative models may restrict sourcing options.
• Requires proper circuit design and layout considerations for optimal performance.

Working Principles

The BQ24140YFFT operates by regulating the charging current and voltage supplied to the battery. It utilizes an internal control algorithm to monitor the battery's state and adjust the charging parameters accordingly. The IC communicates with the device's microcontroller through the I2C interface, enabling efficient control and monitoring of the charging process.

Detailed Application Field Plans

The BQ24140YFFT finds applications in various electronic devices that require battery charging capabilities. Some potential application fields include: - Smartphones and tablets - Portable gaming consoles - Wearable devices - Wireless headphones - Portable medical devices

Detailed and Complete Alternative Models

While the BQ24140YFFT is a reliable choice for battery charging applications, there are alternative models available in the market that offer similar functionality. Some notable alternatives include: - BQ24141YFFT - BQ24142YFFT - BQ24143YFFT

These alternative models share comparable features and specifications, providing flexibility in choosing the most suitable IC for specific design requirements.

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