BQ24161BYFFT - English Editing Encyclopedia Entry

Product Overview

Category

BQ24161BYFFT 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

• Efficient charging: BQ24161BYFFT offers high-efficiency charging capabilities, ensuring optimal use of power during the charging process.
• Fast charging: The product supports fast charging protocols, enabling quick replenishment of battery capacity.
• Advanced safety features: It incorporates multiple safety mechanisms to prevent overcharging, overvoltage, and overheating, ensuring safe and reliable charging operations.
• Compact package: BQ24161BYFFT comes in a small form factor package, making it suitable for space-constrained designs.
• Low standby power consumption: The product minimizes power consumption when not actively charging, enhancing overall energy efficiency.

Package and Quantity

BQ24161BYFFT is available in a compact 20-pin QFN (Quad Flat No-Lead) package. It is typically sold in reels containing a specified quantity, commonly 250 or 300 units per reel.

Specifications

• Input voltage range: 4.35V to 6.45V
• Charging current: Up to 3A
• Programmable charge termination current
• Programmable charge voltage
• Thermal regulation and protection
• Battery temperature monitoring
• Integrated power FETs (Field-Effect Transistors)
• I2C interface for configuration and status monitoring

Detailed Pin Configuration

1. VIN: Input voltage supply
2. GND: Ground reference
3. TS: Battery temperature sense input
4. STAT: Charge status output
5. CE: Charger enable control input
6. SDA: I2C data line
7. SCL: I2C clock line
8. VBUS: USB input voltage supply
9. D+/D-: USB data lines
10. BAT: Battery connection
11. PROG: Programmable charge termination current control
12. ILIM: Input current limit control
13. PG: Power good output
14. TS/NTC: Thermistor input for battery temperature monitoring
15. INT: Interrupt output
16. TS1: Temperature sense input 1
17. TS2: Temperature sense input 2
18. TS3: Temperature sense input 3
19. TS4: Temperature sense input 4
20. VOUT: Output voltage supply

Functional Features

• Constant current (CC) and constant voltage (CV) charging modes
• Automatic detection of USB or adapter power source
• Dynamic power path management for simultaneous charging and system operation
• Thermal regulation to prevent overheating during charging
• Charge status indication through the STAT pin
• Programmable charge parameters for customization
• Fault protection against overvoltage, overcurrent, and short circuits

Advantages and Disadvantages

Advantages

• High charging efficiency ensures optimal use of power.
• Fast charging capability reduces charging time.
• Advanced safety features protect the battery and device from potential hazards.
• Compact package allows for flexible integration in various designs.
• Low standby power consumption enhances energy efficiency.

Disadvantages

• Limited availability of alternative models from other manufacturers.
• Relatively higher cost compared to some competing products.

Working Principles

BQ24161BYFFT operates based on a switching regulator topology combined with advanced charging algorithms. It regulates the charging process by controlling the charging current and voltage according to the battery's characteristics. The integrated power FETs efficiently transfer power from the input source to the battery, ensuring effective charging while minimizing power losses.

Detailed Application Field Plans

BQ24161BYFFT finds extensive application in the following fields: 1. Mobile devices: Smartphones, tablets, and wearable electronics. 2. Portable consumer electronics: Bluetooth speakers, power banks, and handheld gaming devices. 3. Industrial equipment: Handheld measurement devices, portable medical devices, and ruggedized devices. 4. Internet of Things (IoT): Battery-powered IoT sensors, trackers, and smart home devices.

Alternative Models

While BQ24161BYFFT is a highly capable charging IC, alternative models from other manufacturers can also be considered for specific requirements. Some notable alternatives include: - MCP73871 by Microchip Technology - MAX1555 by Maxim Integrated - LTC4054 by Linear Technology

These alternatives offer similar functionality and can be evaluated based on factors such as cost, availability, and specific design considerations.

In conclusion, BQ24161BYFFT is a versatile integrated circuit designed for efficient and fast charging of lithium-ion batteries. With its advanced features and compact package, it caters to various applications in the mobile, consumer electronics, industrial, and IoT sectors. While alternative models