BQ24278RGET

Product Overview

Category

BQ24278RGET belongs to the category of integrated circuits (ICs) specifically designed for battery charging applications.

Use

This product is primarily used for charging lithium-ion batteries in various electronic devices such as smartphones, tablets, and portable electronics.

Characteristics

• Integrated circuit for battery charging
• Supports fast charging protocols
• High efficiency power management
• Compact package size
• Low power consumption
• Overvoltage and overcurrent protection

Package

BQ24278RGET is available in a small 24-pin QFN (Quad Flat No-leads) package. This package offers excellent thermal performance and ease of integration into electronic devices.

Essence

The essence of BQ24278RGET lies in its ability to efficiently charge lithium-ion batteries while providing protection against overvoltage and overcurrent conditions.

Packaging/Quantity

This product is typically sold in reels or tubes containing a specified quantity of ICs, depending on the manufacturer's packaging standards.

Specifications

• Input voltage range: 3.9V to 6.45V
• Charging voltage range: 3.5V to 4.44V
• Maximum charging current: 2A
• Programmable charging profiles
• Thermal regulation and protection
• Battery temperature monitoring
• Power path management

Detailed Pin Configuration

1. VIN: Input voltage pin
2. GND: Ground pin
3. TS: Temperature sense input
4. STAT: Status output pin
5. ISET: Charging current setting pin
6. VBUS: USB input voltage pin
7. PG: Power good output pin
8. BAT: Battery voltage pin
9. SYS: System voltage pin
10. ILIM: Input current limit setting pin
11. SDA: I2C data pin
12. SCL: I2C clock pin
13. TS/NTC: Temperature sense or NTC input pin
14. INT: Interrupt output pin
15. CE: Charge enable input pin
16. D+/D-: USB data pins
17. VREG: Regulated output voltage pin
18. TS/NTC: Temperature sense or NTC input pin
19. TS/NTC: Temperature sense or NTC input pin
20. TS/NTC: Temperature sense or NTC input pin
21. TS/NTC: Temperature sense or NTC input pin
22. TS/NTC: Temperature sense or NTC input pin
23. TS/NTC: Temperature sense or NTC input pin
24. TS/NTC: Temperature sense or NTC input pin

Functional Features

1. Fast charging support: BQ24278RGET is capable of supporting various fast charging protocols, enabling quick and efficient battery charging.
2. Power path management: This IC allows simultaneous charging of the battery while powering the device, ensuring uninterrupted operation.
3. Thermal regulation and protection: The integrated thermal regulation feature prevents overheating during charging, enhancing safety and reliability.
4. Programmable charging profiles: Users can customize charging profiles to meet specific battery requirements, optimizing charging efficiency.

Advantages and Disadvantages

Advantages

• High charging efficiency
• Compact package size
• Supports fast charging protocols
• Overvoltage and overcurrent protection
• Programmable charging profiles

Disadvantages

• Limited availability of alternative models
• Relatively high cost compared to standard charging ICs

Working Principles

BQ24278RGET operates by regulating the charging current and voltage supplied to the lithium-ion battery. It monitors the battery temperature, input voltage, and current to ensure safe and efficient charging. The IC also manages the power path between the input source and the battery, allowing simultaneous charging and device operation.

Detailed Application Field Plans

BQ24278RGET finds applications in a wide range of electronic devices that utilize lithium-ion batteries. Some notable application fields include: - Smartphones - Tablets - Portable media players - Wearable devices - Bluetooth headsets - Digital cameras - Handheld gaming consoles

Detailed and Complete Alternative Models

While BQ24278RGET is a highly capable charging IC, there are alternative models available in the market that offer similar functionality. Some notable alternatives include: - BQ24296: A similar IC with additional USB OTG support - LTC4000: A high-performance battery charger with advanced features - MCP73871: A compact charging IC with integrated pass transistor

These alternative models can be considered based on specific requirements and design constraints.

In conclusion, BQ24278RGET is an integrated circuit designed for efficient charging of lithium-ion batteries in various electronic devices. With its fast charging support, power management capabilities, and protection features, it offers significant advantages in terms of charging efficiency and safety