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Thursday - January 21, 2021

NEW Battery-Protection IC “MQC860” for Maximum Quick Charging Performance

MinebeaMitsumi Inc. (hereinafter “MinebeaMitsumi”) has developed a lithium-ion battery protection IC, MQC860, which maximizes the quick-charging performance of smartphones. MQC860 can complement the performance of the charging system for Qualcomm® Snapdragon™ mobile platforms.

Recent products powered by lithium-ion batteries, especially smartphones, increasingly have a larger battery capacity, and it takes longer to charge the batteries with the current charging system. This increases needs for a system that is capable of quick charging. To respond to such market needs and to complement the performance of charging system and battery fuel gauge systems, we have developed a product that can accurately monitor cell voltage by adding a cell voltage monitoring terminal to a battery protection IC.

MinebeaMitsumi is the world’s leading supplier of 1-cell lithium-ion battery protection IC and MQC857 that we developed in 2018, and is the first product compatible with Qualcomm® Quick Charge™ technology, currently used for many high-end smartphones.

Though most smartphones used to use one lithium-ion battery (1-cell) before, more smartphones use two lithium-ion batteries (2-cell) to shorten the charging time. By using core technology applied to MQC860 series, we are also developing next-generation products, scheduled to be released in 2021, which support 2-cell products (MQC883) to complement Quick Charge 5 technology released by Qualcomm Technologies, Inc. in July 2020.

Features
  • MQC860 is an upgrade product of the first generation product, MQC857
  • Impedance of cell voltage monitor terminal reduced to 100 Ω or less
  • Built-in temperature protection function by NTC thermistor
Applications
  • Smartphones and tablets
  • Other mobile devices

MQC Family Roadmap

MQC860 Usage Example

 

Specifications

Overcharge detection voltage
4.1 to 5. 0V (5mV step), ±20mV accuracy
Overdisharge detection voltage
2.1 to 3. 0V (50mV step), ±35mV accuracy
Discharge over-current detection voltage 1
6mV - 50mV (1mV step), ±1.0mV accuracy
Discharge over-current detection voltage 2
15 mV - 100mV (1mV step), ±2.0mV accuracy
Charge over-current detection voltage
-50mV to- -6mV (1mV step), ±1.0mV accuracy
Short-circuit detection voltage
30 - 200mV (10mV step), ±5.0mV accuracy

* Qualcomm, Quick Charge and Snapdragon are trademarks or registered trademarks of Qualcomm Incorporated.

* Qualcomm Snapdragon and Qualcomm Quick Charge are products of Qualcomm Technologies, Inc. and/or its subsidiaries.

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