DS2746G+

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Power management IC (PMIC) devices are becoming increasingly important in the design of modern electronics. The battery management IC, in particular, is becoming ubiquitous as it helps to improve efficiency, reduce cost, and extend battery life. The Texas Instruments DS2746G+ is a specialized PMIC designed to monitor, manage, and protect single- and dual-cell Li-ion and Li-Polymer batteries in mobile devices, such as smartphones and tablets.

The DS2746G+ consists of a linear Li-ion battery charger, a fuel gauge, a programmable current source, and a battery protection circuit. It is a highly integrated IC that includes a 4-channel ADC, 25-bit EEPROM (for configuration), integrated pass transistors and regulators, and integrated reverse-blocking switches. It is available in a low-profile, 6-by-6mm QFN package, making it ideal for space-constrained mobile applications.

Application Field

The primary application for the DS2746G+ is in smartphones and tablets as a battery management IC. It helps to monitor, manage, and protect Li-ion and Li-Polymer batteries in these mobile devices. It can optimize efficiency, reduce power consumption, and prolong battery life by preventing over-charging and over-discharging of the battery.

The DS2746G+ is also suitable for other consumer electronics, such as Wearables, Drones, Medical Devices and Handhelds. It is a low-profile device and can provide better efficiency and protection, making it ideally suited for consumer electronics products.

Working Principle

The DS2746G+ consists of a linear Li-ion battery charger, a fuel gauge, a programmable current source, and a battery protection circuit. The bulk of the device’s functionality is carried out by the fuel gauge, which is capable of calculating the exact amount of energy remaining in a single or dual-cell Li-ion or Li-Polymer battery. It can provide accurate and efficient monitoring of the remaining energy and accurately represents the remaining energy in the battery at any given time.

The integrated linear Li-ion battery charger allows the battery to be safely charged by the device. It supports charge termination, charge status monitoring, and protection from over-voltage and over-temperature conditions. Additionally, the integrated programmable current source produces a maximum output current of 500mA to drive the LEDs, LCDs, and other devices on a mobile device.

Lastly, the integrated battery protection circuit protects the device from over-discharge and other potential fault conditions. The circuit can be programmed to shut down the battery when the voltage reaches a pre-defined limit or when it detects a fault condition.

Conclusion

The Texas Instruments DS2746G+ is a specialized PMIC designed to monitor, manage, and protect single- and dual-cell Li-ion and Li-Polymer batteries in mobile devices, such as smartphones and tablets. It consists of a linear Li-ion battery charger, a fuel gauge, a programmable current source, and a battery protection circuit. It provides efficient and accurate monitoring and management of the battery, optimizing efficiency, reducing power consumption, and prolonging battery life.

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