BQ24272RGER

BQ24272RGER

Product Overview

Category

The BQ24272RGER belongs to the category of integrated circuits (ICs) specifically designed for battery charging applications.

Use

This IC is commonly used in portable electronic devices, such as smartphones, tablets, and wearable devices, to efficiently charge lithium-ion batteries.

Characteristics

• High efficiency: The BQ24272RGER incorporates advanced charging algorithms and power management techniques to maximize charging efficiency.
• Fast charging: It supports various fast charging protocols, including USB Battery Charging Specification 1.2, making it suitable for quick charging requirements.
• Compact package: The IC comes in a small 24-pin VQFN package, allowing for space-saving integration into compact electronic devices.
• Thermal regulation: It includes built-in thermal regulation features to prevent overheating during charging, ensuring safe operation.

Package and Quantity

The BQ24272RGER is available in a 24-pin VQFN package. It is typically sold in reels or tubes containing a specified quantity, usually ranging from 250 to 3000 units per package.

Specifications

• Input voltage range: 3.9V to 6.45V
• Charging voltage range: 3.5V to 4.44V
• Charging current range: Up to 3A
• Operating temperature range: -40°C to +85°C
• Integrated safety features: Overvoltage protection, overcurrent protection, thermal regulation, and battery temperature monitoring.

Pin Configuration

The BQ24272RGER has a total of 24 pins, each serving a specific function. The detailed pin configuration is as follows:

1. VIN: Input voltage pin
2. PGND: Power ground pin
3. STAT: Status output pin
4. ISET: Charging current setting pin
5. TS: Thermistor input pin
6. VSS: Ground pin
7. VDD: Power supply pin
8. TS/NTC: Thermistor input or NTC temperature sensing pin
9. BAT: Battery voltage sense pin
10. VBUS: USB input voltage sense pin
11. SDA: I2C data pin
12. SCL: I2C clock pin
13. INT: Interrupt output pin
14. EN/SET: Enable and setting pin
15. ILIM: Input current limit setting pin
16. SRN: Serial resistor network pin
17. VREF: Reference voltage output pin
18. D+/D-: USB data pins
19. VBUS: USB input voltage sense pin
20. GND: Ground pin
21. PG: Power good output pin
22. TS/NTC: Thermistor input or NTC temperature sensing pin
23. TS/NTC: Thermistor input or NTC temperature sensing pin
24. VSS: Ground pin

Functional Features

The BQ24272RGER offers several functional features that enhance its performance and usability:

1. Dynamic power management: The IC intelligently adjusts the charging current based on the available input power, maximizing charging efficiency.
2. Battery temperature monitoring: It continuously monitors the battery temperature to prevent overcharging or overheating, ensuring safe operation.
3. Charge termination: The IC automatically terminates the charging process when the battery is fully charged, preventing overcharging and extending battery life.
4. Reverse boost mode: It supports reverse boost functionality, allowing the battery to act as a power source for other devices in certain applications.

Advantages and Disadvantages

Advantages

• High charging efficiency
• Fast charging capability
• Compact package size
• Integrated safety features
• Wide operating temperature range

Disadvantages

• Limited availability of alternative models
• Relatively higher cost compared to some other charging ICs

Working Principles

The BQ24272RGER operates based on a combination of power management techniques and charging algorithms. It regulates the charging current and voltage to ensure optimal charging efficiency while protecting the battery from overcharging, overcurrent, and overheating.

When connected to an input power source, the IC detects the available power and adjusts the charging current accordingly. It continuously monitors the battery temperature and adjusts the charging parameters to prevent any potential safety hazards.

The IC also supports various charging modes, such as pre-conditioning, constant current, and constant voltage, to efficiently charge the battery while maintaining its health and longevity.

Detailed Application Field Plans

The BQ24272RGER is widely used in various portable electronic devices, including:

1. Smartphones
2. Tablets
3. Wearable devices (smartwatches, fitness trackers)
4. Portable gaming consoles
5. Bluetooth headphones and speakers
6. Portable medical devices

Its compact size, high efficiency, and integrated safety features make it an ideal choice for these applications, ensuring reliable and fast charging while maintaining battery health.