BQ24253YFFR - English Editing Encyclopedia Entry

Product Overview

Category

BQ24253YFFR belongs to the category of integrated circuits (ICs) specifically designed for battery charging applications.

Use

This product is primarily used for managing and controlling the charging process of rechargeable batteries in various electronic devices such as smartphones, tablets, portable media players, and other portable electronic devices.

Characteristics

• The BQ24253YFFR offers a compact and efficient solution for battery charging.
• It supports multiple charging modes, including fast charging and trickle charging.
• The IC incorporates advanced safety features to protect the battery from overcharging, overvoltage, and overcurrent conditions.
• It provides accurate battery voltage and current monitoring capabilities.
• The BQ24253YFFR is designed to operate with a wide input voltage range, making it suitable for various power sources.

Package and Quantity

The BQ24253YFFR is available in a small form factor package, typically a 20-pin QFN (Quad Flat No-Lead) package. It is commonly supplied in reels or trays, with quantities varying based on customer requirements.

Specifications

• Input Voltage Range: 4.35V to 6.45V
• Charging Voltage Range: 3.5V to 4.44V
• Maximum Charging Current: 2A
• Operating Temperature Range: -40°C to +85°C
• Efficiency: Up to 95%
• Standby Current: <10µA

Pin Configuration

The BQ24253YFFR features a 20-pin QFN package with the following pin configuration:

1. VBUS
2. AC/DC
3. TS
4. STAT
5. PG
6. CE
7. ISET
8. SRN
9. SRP
10. VSS
11. VSS
12. VSS
13. VSS
14. VSS
15. VSS
16. VSS
17. VSS
18. VSS
19. VDD
20. VDD

Functional Features

• Input Current Limiting: The IC provides input current limiting to protect the power source from excessive current draw.
• Battery Temperature Monitoring: It incorporates a temperature sensor to monitor the battery temperature and adjust the charging parameters accordingly.
• Charge Termination: The BQ24253YFFR automatically terminates the charging process when the battery is fully charged, preventing overcharging.
• Battery Detection: It supports battery detection and identification for optimal charging performance.
• Status Indication: The STAT pin provides status indication, allowing the host system to monitor the charging process.

Advantages and Disadvantages

Advantages

• Compact size and high integration make it suitable for space-constrained applications.
• Multiple charging modes provide flexibility for different battery types and charging requirements.
• Advanced safety features protect the battery and ensure safe charging.
• Wide input voltage range allows compatibility with various power sources.

Disadvantages

• Limited maximum charging current may not be suitable for devices requiring higher charging speeds.
• Lack of built-in communication protocols limits compatibility with certain advanced charging systems.

Working Principles

The BQ24253YFFR operates based on a switching regulator topology. It utilizes a combination of control circuitry, power MOSFETs, and sensing mechanisms to regulate the charging process. The IC continuously monitors the battery voltage, current, and temperature to adjust the charging parameters accordingly. It employs pulse width modulation (PWM) techniques to efficiently transfer power from the input source to the battery.

Detailed Application Field Plans

The BQ24253YFFR is widely used in various portable electronic devices that require efficient and reliable battery charging. Some of the common application fields include:

1. Smartphones and Tablets
2. Portable Media Players
3. Wearable Devices
4. Bluetooth Headsets
5. Handheld Gaming Consoles

Detailed Alternative Models

For users seeking alternative options, several other ICs with similar functionalities are available in the market. Some notable alternatives to the BQ24253YFFR include:

1. MCP73871-2CCI/MLI
2. LTC4000-1
3. MAX1555ETB+
4. TPS2513

These alternative models offer comparable features and can be considered based on specific application requirements.

In conclusion, the BQ24253YFFR is a compact and efficient integrated circuit designed for battery charging applications. With its advanced features and wide range of applications, it provides an effective solution for managing rechargeable batteries in portable electronic devices.

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