BQ24161YFFT - English Editing Encyclopedia Entry

Product Overview

Category

The BQ24161YFFT 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 BQ24161YFFT 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 BQ24161YFFT operates within a wide input voltage range, allowing compatibility with different power sources.

Package

The BQ24161YFFT is available in a small form factor package, such as a thin QFN (Quad Flat No-leads) package. This package type offers excellent thermal performance and ease of integration into circuit boards.

Essence

The essence of the BQ24161YFFT lies in its ability to efficiently charge batteries while providing necessary protection mechanisms, ensuring safe and reliable operation.

Packaging/Quantity

The BQ24161YFFT is typically sold in reels or trays, 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 Current Range: Up to 3A
• Operating Temperature Range: -40°C to +85°C
• Battery Voltage Regulation Accuracy: ±0.5%
• Charge Termination Accuracy: ±5mV
• Standby Current: <100µA

Detailed Pin Configuration

The BQ24161YFFT has a total of 20 pins, each serving a specific function. The pin configuration is as follows:

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: Temperature sense pin
7. STAT: Charging status indicator pin
8. ISET: Charging current setting pin
9. ILIM: Input current limit setting pin
10. EN: Enable pin
11. PROG: Programming pin
12. DPPM: D+/D- pull-down control pin
13. DCP: Detection control pin
14. SRN: Soft-start control pin
15. SDA: I2C data pin
16. SCL: I2C clock pin
17. INT: Interrupt output pin
18. THERM: Thermal regulation pin
19. TS/NTC: Thermistor input pin
20. GND: Ground pin

Functional Features

• Fast Charging: The BQ24161YFFT supports high-speed charging, reducing the charging time for batteries.
• Thermal Regulation: This IC incorporates thermal regulation mechanisms to prevent overheating during the charging process.
• Charge Termination: It includes accurate charge termination algorithms to prevent overcharging and extend battery life.
• Input Current Limiting: The BQ24161YFFT provides input current limiting functionality to protect the power source from excessive current draw.
• Programmability: Certain parameters of the IC can be programmed using the PROG pin, allowing customization based on specific requirements.

Advantages and Disadvantages

Advantages

• High charging efficiency ensures optimal use of power.
• Multiple charging modes cater to different battery types and charging scenarios.
• Advanced safety features protect the battery from damage.
• Compact form factor enables integration into various electronic devices.
• Wide input voltage range enhances compatibility with different power sources.

Disadvantages

• Limited availability of alternative models from other manufacturers.
• Relatively higher cost compared to some other charging ICs in the market.

Working Principles

The BQ24161YFFT operates based on a combination of charging algorithms and control mechanisms. It regulates the charging current and voltage to ensure safe and efficient charging of batteries. The IC continuously monitors various parameters such as battery voltage, temperature, and charging status to adjust its operation accordingly.

Detailed Application Field Plans

The BQ24161YFFT finds applications in a wide range of electronic devices that require battery charging capabilities. Some notable application fields include: - Smartphones and tablets - Portable gaming consoles - Wearable devices - Wireless headphones and earbuds - Portable medical devices - IoT (Internet of Things) devices

Detailed and Complete Alternative Models

While the BQ24161YFFT is a highly capable charging IC, there are alternative models available from other manufacturers that offer similar functionalities. Some notable alternatives include: - MCP73871 by Microchip Technology - MAX1555 by Maxim Integrated