BQ24272YFFT - English Editing Encyclopedia Entry

Product Overview

Category

The BQ24272YFFT 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, ensuring efficient and safe charging.

Characteristics

• The BQ24272YFFT offers high efficiency charging with its advanced power management features.
• It supports various battery chemistries, including lithium-ion (Li-ion), lithium-polymer (Li-Po), and nickel-metal hydride (NiMH).
• This IC incorporates a wide input voltage range, allowing it to be used in diverse charging scenarios.
• It provides protection features such as overvoltage protection, overcurrent protection, and thermal regulation.
• The BQ24272YFFT also includes a programmable charge current and voltage, enabling customization based on specific battery requirements.

Package and Quantity

The BQ24272YFFT is available in a small form factor package, typically a 20-pin QFN (Quad Flat No-leads) package. It is commonly supplied in reels or tubes, with quantities varying based on customer requirements.

Specifications

• Input Voltage Range: 4.35V to 6.45V
• Charge Voltage Range: 3.5V to 4.44V
• Charge Current Range: 0.128A to 2.048A
• Operating Temperature Range: -40°C to +85°C
• Package Type: 20-pin QFN

Detailed Pin Configuration

1. VIN: Input voltage pin
2. VBUS: USB input voltage pin
3. PGND: Power ground pin
4. SYS: System output voltage pin
5. BAT: Battery voltage pin
6. TS: Thermistor input pin
7. ISET: Charge current setting pin
8. STAT: Status output pin
9. CE: Charger enable pin
10. SDA: I2C data pin
11. SCL: I2C clock pin
12. INT: Interrupt output pin
13. TS/NTC: Thermistor input or NTC temperature sense input pin
14. VREF: Reference voltage output pin
15. ILIM: Input current limit setting pin
16. TS/NTC: Thermistor input or NTC temperature sense input pin
17. TS/NTC: Thermistor input or NTC temperature sense input pin
18. GND: Ground pin
19. VREG: Regulated output voltage pin
20. VBUS: USB input voltage pin

Functional Features

• Advanced Power Path Management: Allows simultaneous charging of the battery and powering the system.
• Dynamic Power Management: Optimizes power delivery based on the system's requirements, enhancing overall efficiency.
• Battery Temperature Monitoring: Enables safe charging by monitoring the battery temperature and adjusting charging parameters accordingly.
• Charging Safety Features: Provides protection against overvoltage, overcurrent, and over-temperature conditions, ensuring safe operation.
• Programmable Charge Parameters: Allows customization of charge current and voltage to suit different battery chemistries and capacities.

Advantages and Disadvantages

Advantages

• High charging efficiency
• Wide input voltage range
• Supports multiple battery chemistries
• Comprehensive protection features
• Customizable charge parameters

Disadvantages

• Limited availability in certain package options
• Requires additional external components for complete charging solution

Working Principles

The BQ24272YFFT operates by regulating the charging process through a combination of power management techniques. It utilizes a switching regulator to efficiently convert the input voltage to the desired charging voltage. The IC constantly monitors the battery voltage, current, and temperature to ensure safe and optimal charging. It dynamically adjusts the charge current and voltage based on the battery's state of charge and temperature, maximizing charging efficiency while preventing overcharging or overheating.

Detailed Application Field Plans

The BQ24272YFFT finds applications in various portable electronic devices that require battery charging capabilities. Some common application fields include: - Smartphones and tablets - Wearable devices - Portable medical equipment - Wireless communication devices - Industrial handheld devices

Detailed and Complete Alternative Models

1. BQ24270YFFT: Similar to BQ24272YFFT but with a lower charge current range.
2. BQ24273YFFT: Similar to BQ24272YFFT but with additional features like USB OTG support.
3. BQ24274YFFT: Similar to BQ24272YFFT but optimized for higher input voltage ranges.

These alternative models offer similar functionality and can be considered as alternatives based on specific requirements and design constraints.

In conclusion, the BQ24272YFFT is an integrated circuit designed for efficient and safe battery charging applications. With its advanced power management features, customizable