GG25LJ

Battery Management Overview

The GG25LJ is a battery management gas gauge IC from STMicroelectronics, designed for monitoring Lithium-ion and Lithium Polymer batteries. It operates within a supply voltage range of 2.7 V to 4.5 V and supports an output voltage of 4.2 V. The device features a 10-FCCSP (1.37x2.01 mm) surface-mount package and utilizes an I2C interface. It functions across a temperature range of -40°C to +85°C with a typical operating current of 45 μA. The component is classified as NRND (Not Recommended for New Designs).

Battery Management Feature Summary

• Implements the OptimGauge algorithm for Coulomb counting and voltage-mode gas gauging.
• Provides low battery level alarm output with programmable thresholds.
• Includes internal temperature sensor for compensation and battery swap detection.

Battery Management Applications

• Battery monitoring in portable electronic devices.
• State-of-charge estimation for Lithium-ion systems.
• Low-power consumer electronics requiring fuel gauge functionality.

Battery Management Procurement Notes

Verify the Not Recommended for New Design (NRND) status before integration. Confirm availability through authorized distributors as standard stock may be limited. Ensure the 10-FCCSP footprint matches the PCB layout requirements. Check RoHS compliance documentation for final assembly validation.

Battery Management Selection Notes

Select this component for applications requiring accurate SOC estimation via Coulomb counting. Consider the 45 μA operating current for power-sensitive designs. Verify compatibility with the I2C bus architecture. Evaluate the need for programmable alarm thresholds against system safety requirements.

Battery Management Part Context

The GG25LJ belongs to the GG25L series of gas gauge ICs. It provides hardware functions for low-cost battery monitoring using current sensing and voltage measurements. The series targets cost-effective implementations for portable devices requiring reliable state-of-charge tracking.

Battery Management Replacement Considerations

Public confirmed substitute part numbers are not available in the provided data. Due to the NRND status, alternative components should be evaluated based on functional equivalence and interface compatibility.