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The BQ2004SNTR is a smart battery monitor IC designed for single-cell lithium-ion and lithium-polymer batteries. It provides accurate state-of-charge (SOC) indication by monitoring voltage, current, and temperature. The device features an integrated coulomb counter and supports communication via the SMBus protocol. It includes programmable thresholds for over-voltage, under-voltage, and temperature protection. The component operates within a supply voltage range of 2.7V to 5.5V and is housed in an 8-pin SOIC package.
Verify the specific suffix 'SNTR' confirms the tape-and-reel packaging format and the SN package style. Ensure compatibility with the target system's SMBus voltage levels and check that the operating temperature range meets the application requirements. Confirm the revision level matches design specifications.
Select this component when accurate SOC monitoring is required for single-cell Li-ion or Li-Po systems. It is suitable for applications needing SMBus integration without external microcontrollers for basic battery management. Consider thermal performance and PCB layout constraints associated with the SOIC package.
This part belongs to Texas Instruments' BQ series of battery management solutions. It is designed to replace older fuel gauge technologies by offering higher accuracy and lower power consumption. The device integrates functions previously requiring multiple discrete components into a single IC.
Check for direct pin-compatible alternatives within the BQ family. Verify that any substitute maintains SMBus compatibility and similar protection threshold programming capabilities. Review updated datasheets for changes in electrical characteristics or package options.