BQ2204ASN-N

Overview

The BQ2204ASN-N is a battery gas gauge integrated circuit manufactured by Texas Instruments. It utilizes the Fuel Gauge Algorithm to provide accurate state-of-charge and remaining capacity data for lithium-ion, lithium-polymer, and other rechargeable battery chemistries. The device features an I2C-compatible interface for communication with host processors. It includes built-in protection mechanisms such as over-voltage, under-voltage, and short-circuit detection. The component operates within a specified temperature range and is housed in a surface-mount package suitable for portable electronic applications requiring precise energy monitoring.

Feature Summary

• Implements advanced fuel gauge algorithms for precise state-of-charge estimation across various battery types
• Provides comprehensive battery health monitoring including cycle count and internal resistance tracking
• Integrates hardware-based safety protections against electrical faults and abnormal operating conditions

Applications

• Portable consumer electronics requiring accurate battery level indication
• Medical devices needing reliable power management and safety alerts
• Industrial handheld tools utilizing rechargeable battery packs

Procurement Notes

Verify the complete part number including suffixes to ensure correct packaging and temperature grade. Confirm compatibility with the target battery chemistry and system voltage levels before integration. Check for recent product change notifications or lifecycle status updates from the manufacturer to ensure long-term availability and support for the design.

Selection Notes

Select this component when high accuracy in state-of-charge reporting is critical for user experience. Ensure the host system supports the required communication protocol and has sufficient processing capability to utilize the algorithm's full potential. Consider the physical footprint and pinout compatibility with the existing PCB layout during the initial design phase.

Part Context

This device belongs to the BQ2200 series of battery gas gauges designed for single-cell applications. It is part of Texas Instruments' portfolio of power management solutions focused on extending battery life and improving system reliability. The series is widely used in industries where accurate power prediction is essential for operational continuity and user satisfaction.

Replacement Considerations

Consult official substitution guides for compatible alternatives within the same family. Verify pin-to-pin compatibility and software register mapping if replacing with similar models. Ensure that any substitute component meets the same electrical specifications and environmental ratings required by the original design.