BQ24250YFFT - English Editing Encyclopedia Entry

Product Overview

Category

The BQ24250YFFT belongs to the category of integrated circuits (ICs) and specifically falls under the power management ICs.

Use

This product is primarily used for managing power in portable electronic devices, such as smartphones, tablets, and wearable devices. It provides efficient charging and power delivery capabilities.

Characteristics

• High efficiency: The BQ24250YFFT offers high charging efficiency, minimizing energy loss during the charging process.
• Fast charging: It supports fast charging protocols, enabling quick replenishment of device batteries.
• Compact package: The product comes in a small form factor, making it suitable for space-constrained applications.
• Integrated protection features: It incorporates various protection mechanisms, including overvoltage, overcurrent, and thermal protection, ensuring safe operation.

Package and Quantity

The BQ24250YFFT is available in a compact 20-pin QFN (Quad Flat No-Lead) package. It is typically sold in reels containing a specific quantity, usually around 2500 units per reel.

Specifications

• Input voltage range: 3.9V to 6.45V
• Output voltage range: 3.9V to 6.2V
• Charging current: Up to 2A
• Operating temperature range: -40°C to 85°C
• Standby current: Less than 100µA

Detailed Pin Configuration

The BQ24250YFFT has a total of 20 pins, each serving a specific function. Here is a brief overview of the pin configuration:

1. VIN: Input voltage pin
2. VBUS: USB input voltage pin
3. PGND: Power ground pin
4. SYS: System output voltage pin
5. STAT: Status indication pin
6. ISET: Charging current setting pin
7. TS: Temperature sense pin
8. VBAT: Battery voltage pin
9. PROG: Programming pin
10. ILIM: Input current limit pin
11. EN2: Enable pin 2
12. EN1: Enable pin 1
13. SDA: I2C data pin
14. SCL: I2C clock pin
15. INT: Interrupt output pin
16. TS/NTC: Temperature sense or NTC input pin
17. BATFET: Battery FET control pin
18. SRN: Serial resistor network pin
19. VOUT: Output voltage pin
20. GND: Ground pin

Functional Features

• Dynamic Power Path Management: The BQ24250YFFT allows simultaneous charging of the battery and powering the system, ensuring uninterrupted device operation.
• USB OTG Support: It provides USB On-The-Go (OTG) functionality, enabling the device to act as a host or peripheral.
• I2C Interface: The product features an I2C interface for communication with the host microcontroller, allowing for advanced control and monitoring capabilities.
• Battery Temperature Monitoring: It incorporates temperature sensing to prevent overheating during charging, ensuring safe operation.

Advantages and Disadvantages

Advantages

• High charging efficiency leads to reduced energy consumption.
• Fast charging capability enables quick device turnaround.
• Compact package size suits space-constrained applications.
• Integrated protection mechanisms ensure safe operation.

Disadvantages

• Limited input voltage range may restrict compatibility with certain power sources.
• Requires additional programming for specific application requirements.

Working Principles

The BQ24250YFFT operates by regulating the flow of power from the input source to the battery and the system. It employs various control algorithms to optimize charging efficiency and protect against potential hazards such as overvoltage and overcurrent. The integrated power path management feature allows seamless power transfer between the input and output, ensuring continuous device operation.

Detailed Application Field Plans

The BQ24250YFFT finds applications in a wide range of portable electronic devices, including: - Smartphones - Tablets - Wearable devices (smartwatches, fitness trackers) - Portable gaming consoles - Bluetooth headphones

Detailed and Complete Alternative Models

1. BQ24250RGET: Similar to BQ24250YFFT, but with a different package type (VQFN).
2. BQ24250YFFR: Same as BQ24250YFFT, but available in tape and reel packaging.
3. BQ24250YFPT: Variant with a different pin configuration, suitable for specific layout requirements.

These alternative models offer similar functionality and can be considered as substitutes based on specific application needs.

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