BQ2944L0DRBR

Battery Management Overview

The BQ2944L0DRBR is a voltage protection integrated circuit designed for two, three, or four-cell lithium-ion battery packs. It provides over-voltage fault protection with a fixed output voltage threshold of 4.35 V. The device operates within a supply voltage range of 4 V to 25 V and features a low operating supply current of 2 µA. It is housed in an 8-lead High Voltage Small Outline No-leads (HVSON) package measuring 3 mm in length. The component supports surface mount installation and functions reliably across an operating temperature range of -40°C to +85°C.

Battery Management Feature Summary

• Provides dedicated over-voltage fault protection for multi-cell lithium-ion battery configurations
• Features a fixed detection threshold voltage of 4.35 V for precise cell monitoring
• Operates with ultra-low quiescent current to minimize standby power consumption
• Supports high input voltage ranges up to 25 V for robust pack protection

Battery Management Applications

• Protection circuits for portable electronic devices using 2-4 cell Li-ion batteries
• Battery management systems requiring fixed over-voltage cutoff thresholds
• Consumer electronics with strict standby power constraints

Battery Management Procurement Notes

Verify the specific suffix 'L0' indicates the 4.35 V threshold variant. Confirm the 8-SON package dimensions match your PCB footprint requirements. Check moisture sensitivity level handling procedures during assembly. Ensure the design accounts for the obsolete status if long-term availability is critical.

Battery Management Selection Notes

Select this component when a fixed 4.35 V over-voltage threshold is required for 2-4 cell Li-ion packs. Consider the low 2 µA supply current for energy-sensitive applications. Verify compatibility with the HVSON-8 package constraints. Evaluate the fixed threshold limitation against adjustable alternatives if system tolerances vary.

Battery Management Part Context

This part belongs to the Texas Instruments BQ2944x series of battery protection ICs. It is specifically engineered for lithium-ion chemistry. The device integrates sensing and control logic to disconnect the load or charger upon detecting over-voltage conditions. It serves as a standalone protection solution without requiring external microcontrollers.

Battery Management Replacement Considerations

Public sources indicate this product is no longer manufactured. Verify if BQ29441DRBR or other family members offer compatible electrical characteristics and pinouts before substitution.