BQ20Z40PW-R1

Battery Management Overview

The BQ20Z40PW-R1 is a System Battery Standard (SBS) compliant gas gauge utilizing Impedance Track technology, designed for lithium-ion and lithium-polymer battery packs. It operates within a supply voltage range of 2.5 V to 6 V and supports cell counts from two to four. The device is housed in a 20-TSSOP package with an operating temperature range of -40°C to +85°C. It provides accurate state-of-charge monitoring and includes protection features such as overcurrent, overtemperature, and short-circuit detection.

Battery Management Feature Summary

• Impedance Track technology enables precise state-of-charge estimation by modeling battery impedance.
• Complies with the System Battery Standard (SBS) 1.1 specification for universal host communication.
• Integrates first-level protection mechanisms including overvoltage, undervoltage, and thermal safeguards.

Battery Management Applications

• Lithium-ion battery pack management in portable electronics
• Lithium-polymer battery systems requiring SBS compliance
• Applications necessitating accurate remaining capacity monitoring

Battery Management Procurement Notes

Verify component authenticity through authorized channels due to the presence of aliases like HPA00744PWR. Confirm that the suffix indicates the specific revision level required for your design. Check current lifecycle status as some variants may be recommended against new designs. Ensure compatibility with the intended host controller interface before procurement.

Battery Management Selection Notes

Select this component when SBS 1.1 compliance and high accuracy are required for 2-4 cell Li-ion or Li-Po packs. Consider the 20-TSSOP package constraints and the -40°C to +85°C operating range. Evaluate if the integrated protection features meet safety requirements without external components. Compare against newer family members if long-term availability is a primary concern.

Battery Management Part Context

This part belongs to the BQ20Z40 series of fuel gauges from Texas Instruments. It shares core functionality with variants like BQ20Z40PW and BQ20Z40PWR, distinguished primarily by the R1 revision suffix. The series utilizes Impedance Track technology for advanced battery monitoring capabilities.

Battery Management Replacement Considerations

Publicly confirmed substitutes include BQ20Z40PW-R1 and BQ20Z40PWR-R1. These variants share identical functional specifications and pinouts, differing only in packaging format or minor revision updates. Verify package compatibility before substitution.