BQ20Z45DBT-R1

Battery Management Overview

The BQ20Z45DBT-R1 is a gas gauge integrated circuit compliant with the System Management Bus (SMBus) 1.1 specification. It utilizes Texas Instruments' Impedance Track technology for accurate battery state-of-charge estimation. The device operates within a supply voltage range of 4.5 V to 25 V and supports lithium-ion and lithium-polymer battery chemistries. It is housed in a 38-pin Thin-Shrink Small Outline Package (TSSOP). The component functions across an industrial temperature range from -40°C to +85°C.

Battery Management Feature Summary

• Impedance Track technology enables precise fuel gauging by modeling battery internal impedance.
• SMBus 1.1 compliance ensures interoperability with host systems for data communication.
• Supports configuration of battery pack parameters including capacity and chemistry type.

Battery Management Applications

• Laptop computers
• Portable medical devices
• Industrial handheld equipment

Battery Management Procurement Notes

Verify the specific suffix DBTR-R1 against official datasheets to confirm tape-and-reel packaging versus tube variants. Confirm RoHS compliance status and lead-free designation prior to ordering. Ensure the supplier provides valid traceability documentation for the Texas Instruments manufacturer part number.

Battery Management Selection Notes

Select this component when SMBus 1.1 interface compatibility is required for legacy or standard host controllers. Choose based on the 38-pin TSSOP package constraint and the 4.5 V to 25 V operating voltage window. Validate that the Impedance Track algorithm meets the accuracy requirements for the specific lithium-ion or polymer cell chemistry in use.

Battery Management Part Context

This part belongs to the BQ20Z family of fuel gauges designed for single-cell applications. It serves as a solution for monitoring battery health in portable electronics where accurate remaining runtime prediction is critical. The device integrates necessary sensing and processing capabilities into a compact form factor suitable for space-constrained designs.

Battery Management Replacement Considerations

Publicly confirmed direct substitute part numbers are not available in the provided source material. Consult Texas Instruments documentation for potential upgrades within the BQ20Z series or newer generations such as the BQ27xxx family, ensuring pinout and software compatibility are verified.