BQ25898CYFFR - English Editing Encyclopedia Entry

Product Overview

Category

The BQ25898CYFFR belongs to the category of integrated circuits (ICs) and is specifically classified as a battery charger IC.

Use

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

Characteristics

• High efficiency: The BQ25898CYFFR offers high charging efficiency, ensuring faster and more efficient battery charging.
• Wide input voltage range: It can accept a wide range of input voltages, making it compatible with different power sources.
• Advanced safety features: This IC incorporates multiple safety mechanisms to protect the battery from overcharging, overvoltage, and overcurrent conditions.
• Programmable charging parameters: Users can customize the charging parameters according to their specific requirements.

Package and Quantity

The BQ25898CYFFR is available in a small form factor package, typically measuring 3mm x 3mm. It is commonly supplied in tape and reel packaging, with a quantity of 3000 units per reel.

Specifications

• Input voltage range: 3.9V to 14V
• Charging current range: Up to 4A
• Output voltage range: 3.6V to 4.44V
• Operating temperature range: -40°C to 85°C
• Integrated thermal regulation and protection circuitry

Pin Configuration

The BQ25898CYFFR has a total of 20 pins, each serving a specific function. The detailed pin configuration is as follows:

1. VIN: Input voltage pin
2. VBUS: USB input voltage pin
3. TS: Temperature sense pin
4. STAT: Status indication pin
5. PG: Power good indication pin
6. ISET: Charging current setting pin
7. VREF: Reference voltage output pin
8. TS/DPDM: Temperature sense or USB D+/D- detection pin
9. SDA: I2C data pin
10. SCL: I2C clock pin
11. BAT: Battery voltage pin
12. SRN: System reset pin
13. ILIM: Input current limit setting pin
14. EN: Enable pin
15. INT: Interrupt pin
16. TS2: Second temperature sense pin
17. TS1: First temperature sense pin
18. TS3: Third temperature sense pin
19. GND: Ground pin
20. VOUT: Output voltage pin

Functional Features

The BQ25898CYFFR offers several functional features, including:

• Constant current and constant voltage charging modes
• Automatic battery detection and initialization
• Thermal regulation to prevent overheating
• Dynamic power management for efficient power utilization
• I2C communication interface for configuration and monitoring

Advantages and Disadvantages

Advantages

• High charging efficiency leads to faster battery charging times.
• Wide input voltage range allows compatibility with various power sources.
• Advanced safety features protect the battery from damage.
• Customizable charging parameters provide flexibility for different applications.

Disadvantages

• Requires additional external components for a complete charging solution.
• Limited availability of alternative models from other manufacturers.

Working Principles

The BQ25898CYFFR operates based on a switching regulator topology. It utilizes a combination of pulse width modulation (PWM) and constant current/constant voltage (CC/CV) charging techniques to efficiently charge lithium-ion batteries. The IC continuously monitors the battery voltage, current, and temperature to ensure safe and optimal charging.

Detailed Application Field Plans

The BQ25898CYFFR is widely used in various portable electronic devices, including smartphones, tablets, smartwatches, and portable power banks. Its compact size, high efficiency, and advanced safety features make it an ideal choice for battery charging applications.

Detailed Alternative Models

While the BQ25898CYFFR is a highly capable battery charger IC, there are alternative models available from other manufacturers that offer similar functionality. Some notable alternatives include:

1. LTC4000-1 - Linear Technology
2. MAX8903A - Maxim Integrated
3. MCP73871 - Microchip Technology
4. TPS2513 - Texas Instruments

These alternative models provide comparable charging capabilities and can be considered as substitutes based on specific application requirements.

In conclusion, the BQ25898CYFFR is a versatile battery charger IC designed for efficient and safe charging of lithium-ion batteries in various electronic devices. Its high efficiency, wide input voltage range, and advanced safety features make it a popular choice among manufacturers.