BQ24158YFFT

Introduction

The BQ24158YFFT is a highly integrated single-cell Li-Ion and Li-Polymer battery charger from Texas Instruments. This device offers a comprehensive set of features to support efficient charging of portable devices.

Basic Information Overview

• Category: Battery Charger IC
• Use: Charging single-cell Li-Ion and Li-Polymer batteries
• Characteristics: Highly integrated, efficient charging, thermal regulation
• Package: 24-pin, 4mm x 4mm, 0.5mm pitch, WCSP
• Essence: Efficient and reliable charging solution for portable devices
• Packaging/Quantity: Tape and reel, 3000 units per reel

Specifications

• Input Voltage Range: 3.9V to 6.2V
• Charge Voltage: 4.2V
• Pre-Charge Current: 250mA
• Termination Current: 10% of the fast charge current
• Operating Temperature Range: -40°C to 85°C

Detailed Pin Configuration

The BQ24158YFFT features a 24-pin WCSP package with detailed pin configuration as follows: 1. VIN 2. TS 3. PROG 4. CE 5. STAT 6. PG 7. VSS 8. VSS 9. VSS 10. VSS 11. VSS 12. VSS 13. VSS 14. BAT 15. SYS 16. VSS 17. VSS 18. VSS 19. VSS 20. VSS 21. VSS 22. VSS 23. VSS 24. VSS

Functional Features

• Integrated power FETs for up to 2A charge rate
• Thermal regulation and protection
• Programmable charge current and voltage
• Battery temperature sensing and protection

Advantages and Disadvantages

Advantages

• High integration reduces external component count
• Efficient charging algorithm maximizes battery life
• Thermal regulation enhances safety and reliability

Disadvantages

• Limited to single-cell battery charging
• Requires careful PCB layout due to high switching frequency

Working Principles

The BQ24158YFFT operates by regulating the charge current and voltage to the connected battery based on the programmed settings. It utilizes an efficient switching regulator to maximize charging efficiency while monitoring the battery temperature to ensure safe operation.

Detailed Application Field Plans

The BQ24158YFFT is ideally suited for applications such as: - Portable consumer electronics - Handheld medical devices - Wearable devices - Portable industrial equipment

Detailed and Complete Alternative Models

• BQ24158YFFR: Similar features with different package (QFN)
• BQ24158YFPT: Similar features with different package (TSSOP)

In conclusion, the BQ24158YFFT from Texas Instruments offers a highly integrated and efficient charging solution for single-cell Li-Ion and Li-Polymer batteries, making it an ideal choice for a wide range of portable electronic devices.

Word Count: 430