BQ24055DSSR

Introduction

The BQ24055DSSR is a specialized integrated circuit (IC) belonging to the category of battery charge management. This device is designed to efficiently manage the charging of single-cell Li-Ion or Li-Polymer batteries, making it suitable for a wide range of portable electronic devices. The BQ24055DSSR offers various characteristics such as high efficiency, small package size, and a comprehensive set of protection features. This entry will provide an overview of the product, including its specifications, pin configuration, functional features, advantages, disadvantages, working principles, application field plans, and alternative models.

Basic Information Overview

• Category: Battery Charge Management IC
• Use: Charging single-cell Li-Ion or Li-Polymer batteries in portable electronic devices
• Characteristics: High efficiency, small package size, comprehensive protection features
• Package: DSSOP-10
• Essence: Efficient and reliable battery charging management
• Packaging/Quantity: Typically available in reels of 2500 units

Specifications

• Input Voltage Range: 4.5V to 6.5V
• Charge Voltage: 4.2V
• Precharge Threshold: 2.1V
• Maximum Charge Current: 1.5A
• Termination Current: 10% of the maximum charge current
• Operating Temperature Range: -40°C to 85°C

Detailed Pin Configuration

The BQ24055DSSR features the following pin configuration: 1. VIN (Input voltage) 2. TS (Thermal shutdown) 3. PROG (Charge current programming) 4. STAT (Charge status output) 5. PG (Power good status output) 6. VSS (Ground) 7. BAT (Battery connection) 8. SYS (System connection) 9. ILIM (Input current limit) 10. ISET (Input current setting)

Functional Features

• Integrated power FET for high-efficiency charging
• Thermal regulation and protection
• Programmable charge current
• Automatic recharge
• Battery temperature sensing
• Status indication outputs

Advantages and Disadvantages

Advantages

• High charging efficiency
• Compact package size
• Comprehensive protection features
• Flexible charge current programming

Disadvantages

• Limited to single-cell battery charging
• Requires external components for complete battery management system

Working Principles

The BQ24055DSSR operates by regulating the charging current and voltage to ensure safe and efficient charging of single-cell Li-Ion or Li-Polymer batteries. It utilizes an integrated power FET to minimize power dissipation and maximize charging efficiency. The device also incorporates thermal regulation and protection mechanisms to safeguard the battery during the charging process.

Detailed Application Field Plans

The BQ24055DSSR is well-suited for various portable electronic devices, including smartphones, tablets, portable media players, and handheld gaming consoles. Its ability to efficiently manage the charging of single-cell batteries makes it an ideal choice for applications where space and power efficiency are crucial.

Detailed and Complete Alternative Models

Some alternative models to the BQ24055DSSR include: - BQ24074: Similar functionality with additional input overvoltage protection - MCP73831: Competing IC with similar charging capabilities - MAX1555: Integrated charger IC with automatic power source selection

In conclusion, the BQ24055DSSR is a versatile and efficient battery charge management IC suitable for a wide range of portable electronic devices. Its compact package, high efficiency, and comprehensive protection features make it an excellent choice for designers seeking reliable battery charging solutions.

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