BQ26500PWG4

Introduction

The BQ26500PWG4 is a high-performance, highly integrated, 1-cell lithium-ion/polymer battery fuel gauge, designed to work with 1S single-cell lithium-ion/polymer battery pack. BQ26500PWG4 is designed to measure accumulated capacity to 0.1% of total battery capacity over the product life. The BQ26500PWG4 provides full protection of the total battery system and it can be used with a wide range of lithium-ion/polymer cells.

Application Field and Working Principle

The BQ26500PWG4 is PMIC - Battery Management device, which is especially designed for portable systems like, mobile phones, laptops, tablets and digital cameras. As it is designed to work with 1S single-cell lithium-ion/polymer battery pack, the BQ26500PWG4 is the ideal product for mobile and portable applications.

BQ26500PWG4 features an 8-bit microcontroller and a high performance current sense amplifier, which provide precise and optimized measurements of battery fuel rate and accumulated capacity of the total battery system. BQ26500PWG4 provides the best level of protection by utilizing the 8-bit microcontroller, extensive embedded logic, and state-of-the-art safety features. The safety features provide drastic reduction of the accumulated capacity in dangerous conditions.

The working principle of the BQ26500PWG4 is based on the Coulomb counting, which is the most accurate method to calculate the amount of available energy in the battery. The device measures the battery voltage and current, then provides the capacity for the total battery system. The device also monitors the battery temperature and keeps out of potentially dangerous areas.

Features

The BQ26500PWG4 comes with a range of advanced features that provide precise and accurate measurements of battery fuel rate and accumulated capacity. Some of these features.

• An 8-bit microcontroller with extensive embedded logic.
• High performance current sense amplifier.
• Power supply voltage regulation.
• Battery voltage, current and temperature monitoring.
• 8-level charge/discharge state-monitoring.
• Safety features to prevent dangerous conditions such as over-discharge, over-temperature, overcharge, and short circuit.

Conclusion

The BQ26500PWG4 is a high-performance, highly integrated, 1-cell lithium-ion/polymer battery fuel gauge, designed for use in portable systems like, mobile phones, laptops, tablets and digital cameras. It features an 8-bit microcontroller and a high performance current sense amplifier, and provides accurate and reliable measurements of battery fuel rate and accumulated capacity. It also provides extensive embedded logic and a range of safety features to protect the total battery system from potentially dangerous conditions.