GLF73912

Battery Management Overview

The GLF73912 is an ultra-low power lithium battery protection IC from GLF Integrated Power, designed for compact devices like TWS earbuds. It features a WLCSP-4L package measuring 0.97mm x 0.97mm. Key electrical parameters include a standby current (IQ) of 0.8uA and a shutdown current (ISD) of 0.1uA. The device has a minimum on-resistance (RON) of 38mΩ and provides overcurrent protection at 600mA. It utilizes a positive-cut architecture to ensure system stability and EMI compliance.

Battery Management Feature Summary

• Integrates full battery protection including overcharge, over-discharge, and overcurrent detection without external MOSFETs.
• Features a unique positive-cut design that shares the battery negative with system GND for improved stability.
• Includes a non-auto-recovery function upon power loss to enhance safety and user preference.
• Optimized for minimal footprint to maximize internal space for battery capacity in small form factors.

Battery Management Applications

• True Wireless Stereo (TWS) Bluetooth headphones
• Ultra-small capacity lithium-ion batteries
• Smart wearable electronic devices

Battery Management Procurement Notes

Verify the specific suffix codes against official GLF documentation to confirm exact functional variants, as packaging or minor parameter differences may exist between sub-models. Ensure compatibility with your PCB layout given the 0.97x0.97mm WLCSP-4L footprint. Confirm RoHS compliance status through the manufacturer's latest datasheet before finalizing procurement plans.

Battery Management Selection Notes

Select this component when minimizing board space is critical due to its 0.97x0.97mm size. Choose it for applications requiring extremely low static power consumption to extend battery life during shipping or storage. The positive-cut architecture makes it suitable for systems where grounding stability and EMI performance are primary concerns compared to standard negative-cut alternatives.

Battery Management Part Context

GLF Integrated Power specializes in ultra-low power integrated circuits for smart IoT and consumer electronics. The GLF73912 belongs to their battery protection series, addressing the need for high integration and low leakage in portable devices. This product line aims to solve power efficiency challenges in small-capacity battery applications common in modern wearables.

Battery Management Replacement Considerations

Publicly confirmed substitute part numbers for the GLF73912 are not available in the provided source material. Users should consult official GLF documentation or authorized distributors for verified cross-reference data.

Battery Management FAQ

Does the GLF73912 require external MOSFETs for operation?

No, the GLF73912 is a fully integrated protection IC that does not require external MOSFETs, saving space and reducing component count.

What is the shutdown current specification for the GLF73912?

The GLF73912 has a minimum shutdown current (ISD) of 0.1uA, which helps preserve battery charge during long-term storage or shipping.