BQ294700DSGR

Battery Management Overview

The BQ294700DSGR is a lithium-ion protection integrated circuit from the Texas Instruments BQ2947 series, designed for single-cell battery management. It operates within a supply voltage range of up to 30 V and features a maximum operating voltage of 20 V. The device supports Lithium-ion and Lithium Polymer chemistries with a fixed output voltage of 4.35 V and an output current capability of 4.5 mA. It utilizes a WSON-8 surface-mount package and functions across a temperature range of -40°C to +85°C, consuming only 1 µA in working power mode.

Battery Management Feature Summary

• Provides accurate cell-by-cell voltage monitoring for lithium-based batteries
• Integrates overvoltage detection functionality to protect against excessive charge conditions
• Designed for low-power operation with minimal quiescent current consumption

Battery Management Applications

• Single-cell lithium-ion battery protection systems
• Lithium polymer battery management circuits
• Portable electronic devices requiring compact battery safety solutions

Battery Management Procurement Notes

Verify the specific suffix 'DSGR' corresponds to the tape-and-reel packaging configuration required for automated assembly processes. Confirm that the 4.35 V output voltage aligns with the target cell chemistry specifications. Ensure compatibility with the WSON-8 footprint during PCB layout validation. Cross-reference the datasheet for humidity sensitivity classification and reflow soldering profile requirements before procurement finalization.

Battery Management Selection Notes

Select this component when designing for single-cell Li-ion or Li-Po applications requiring integrated overvoltage protection. The 4.35 V output setting suits standard lithium-ion cells. Consider the WSON-8 package size constraints and the -40°C to +85°C operational temperature range. Compare against other BQ2947 variants if different output voltages such as 4.25 V or 4.30 V are needed for alternative cell chemistries.

Battery Management Part Context

This part belongs to the BQ2947 family of battery protection ICs from Texas Instruments. The family offers various output voltage options to accommodate different lithium battery standards. The BQ294700 specifically targets the 4.35 V threshold, distinguishing it from siblings like the BQ294701 (4.25 V) or BQ294702 (4.30 V). All variants share similar monitoring capabilities and packaging formats.

Battery Management Replacement Considerations

Direct functional substitutes within the same family include BQ294701DSGR and BQ294702DSGR, provided the system can tolerate their respective 4.25 V and 4.30 V output thresholds. Verify pinout compatibility and thermal performance when swapping between these variants.