BQ25871YFFT - English Editing Encyclopedia Entry
Product Overview
Category
BQ25871YFFT belongs to the category of integrated battery chargers.
Use
This product is primarily used for charging lithium-ion batteries in various electronic devices such as smartphones, tablets, and portable power banks.
Characteristics
- Integrated battery charger with advanced features
- High efficiency and fast charging capability
- Compact size and low power dissipation
- Supports multiple charging modes (e.g., USB BC1.2, USB Type-C, and proprietary protocols)
- Built-in safety features to protect the battery and device
Package
The BQ25871YFFT is available in a small form factor package, typically a 20-pin WQFN package.
Essence
The essence of BQ25871YFFT lies in its ability to efficiently charge lithium-ion batteries while ensuring safety and compatibility with various charging protocols.
Packaging/Quantity
This product is commonly sold in reels or trays, with quantities varying based on customer requirements.
Specifications
- Input voltage range: 3.9V to 14V
- Charging voltage range: 3.6V to 14V
- Maximum charging current: 3A
- Programmable charging parameters
- Operating temperature range: -40°C to +85°C
- Integrated thermal regulation and protection mechanisms
Detailed Pin Configuration
The BQ25871YFFT has a total of 20 pins, each serving a specific function. The pin configuration is as follows:
- VIN: Input voltage pin
- VBUS: USB input voltage pin
- ISET: Current limit setting pin
- TS: Temperature sense pin
- STAT: Status indication pin
- PG: Power good indication pin
- INT: Interrupt output pin
- ILIM: Input current limit setting pin
- TS/DPDM: Temperature sense or DPDM detection pin
- VREF: Reference voltage output pin
- VSS: Ground pin
- VSS: Ground pin
- VSS: Ground pin
- VSS: Ground pin
- VSS: Ground pin
- VSS: Ground pin
- VSS: Ground pin
- VSS: Ground pin
- VSS: Ground pin
- VBAT: Battery voltage pin
Functional Features
- USB OTG support for device-to-device charging
- Dynamic power management for optimal charging efficiency
- Automatic input current and voltage regulation
- Battery temperature monitoring and protection
- Programmable charge termination and safety timers
- Integrated battery voltage and current monitoring
Advantages and Disadvantages
Advantages
- High charging efficiency reduces charging time
- Wide input voltage range allows compatibility with various power sources
- Multiple charging modes cater to different device requirements
- Comprehensive safety features protect the battery and device from damage
Disadvantages
- Limited maximum charging current compared to some other models
- Requires careful configuration for optimal performance in specific applications
Working Principles
The BQ25871YFFT operates by regulating the charging current and voltage based on the battery's state of charge and the input power source. It employs a switching regulator to efficiently convert the input voltage to the desired charging voltage. The charger continuously monitors the battery temperature, input voltage, and current to ensure safe and efficient charging.
Detailed Application Field Plans
The BQ25871YFFT is widely used in various portable electronic devices, including smartphones, tablets, smartwatches, and portable power banks. Its versatility and compatibility with multiple charging protocols make it suitable for a broad range of applications.
Detailed and Complete Alternative Models
- BQ25871RUYR: Similar to BQ25871YFFT, but with a different package type (32-pin VQFN)
- BQ25872YFFT: Upgraded version with higher maximum charging current (4A)
- BQ25875YFFT: Enhanced model with additional features such as USB PD support
These alternative models offer similar functionality and can be considered based on specific application requirements.
In conclusion, the BQ25871YFFT is an integrated battery charger designed for efficient and safe charging of lithium-ion batteries in various electronic devices. Its compact size, multiple charging modes, and advanced safety features make it a popular choice among manufacturers. With its wide range of applications and availability of alternative models, the BQ25871YFFT remains a reliable solution for battery charging needs.
Liste 10 almindelige spørgsmål og svar relateret til anvendelsen af BQ25871YFFT i tekniske løsninger
Sure! Here are 10 common questions and answers related to the application of BQ25871YFFT in technical solutions:
Q: What is the BQ25871YFFT? A: The BQ25871YFFT is a highly integrated single-cell Li-Ion battery charger with Power Path management for portable applications.
Q: What is Power Path management? A: Power Path management allows simultaneous charging of the battery and powering the system from a USB source, such as a wall adapter or power bank.
Q: What is the input voltage range supported by the BQ25871YFFT? A: The BQ25871YFFT supports an input voltage range of 3.9V to 14V.
Q: Can the BQ25871YFFT charge multiple battery chemistries? A: No, the BQ25871YFFT is specifically designed for single-cell Li-Ion batteries.
Q: What is the maximum charging current supported by the BQ25871YFFT? A: The BQ25871YFFT supports a maximum charging current of 3A.
Q: Does the BQ25871YFFT support USB Type-C? A: Yes, the BQ25871YFFT supports USB Type-C with USB PD (Power Delivery) negotiation.
Q: Can the BQ25871YFFT operate in a wide temperature range? A: Yes, the BQ25871YFFT can operate in a temperature range of -40°C to +85°C.
Q: Does the BQ25871YFFT have built-in safety features? A: Yes, the BQ25871YFFT includes various safety features like thermal regulation, overvoltage protection, and battery temperature monitoring.
Q: Can the BQ25871YFFT be controlled and monitored using a microcontroller? A: Yes, the BQ25871YFFT can be controlled and monitored using an I2C interface, allowing integration with a microcontroller.
Q: What are some typical applications of the BQ25871YFFT? A: The BQ25871YFFT is commonly used in smartphones, tablets, portable media players, and other portable electronic devices that require single-cell Li-Ion battery charging.
Please note that these answers are general and may vary depending on the specific implementation and requirements of your technical solution.