BQ2014SN-D120

Series:	--
Packaging:	Tube
Lead Free Status / RoHS Status:	--
Part Status:	Not For New Designs
Moisture Sensitivity Level (MSL):	--
Function:	Battery Monitor
Battery Chemistry:	Multi-Chemistry
Number of Cells:	--
Fault Protection:	--
Interface:	--
Operating Temperature:	0°C ~ 70°C (TA)
Package / Case:	16-SOIC (0.154", 3.90mm Width)
Supplier Device Package:	16-SOIC
Base Part Number:	BQ2014

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The BQ2014SN-D120 is a power-management integrated circuit (PMIC) and part of Texas Instruments\' battery management family. It has a built in system monitor and is designed specifically for protecting single cell Li-Ion battery packs. The BQ2014SN-D120 is a single IC solution for managing a Li-Ion battery and protecting it from excessive over- and under-voltage conditions.The BQ2014SN-D120 uses precise current and voltage measurements to provide a robust, safe, and energy efficient solution for battery packs. It contains analog monitoring, control, and protection circuitry, as well as integrated charging, safety timer, and power source switching. This all-in-one solution is ideal for applications requiring fast and accurate monitoring, protection and charging.The main application field for the BQ2014SN-D120 is Li-Ion battery powered portable electronics, such as laptops, tablets, and mobile phones. The device enables highly precise current, voltage, and temperature measurements necessary for providing safe, regulated power supplies. Because of its integration of power source switching, the device can offer added benefits such as improved portability and battery life.The working principle of the BQ2014SN-D120 is fairly simple: it uses a monitoring circuit to monitor the current and voltage of the battery pack. The device then compares the measured levels with predetermined thresholds, and sends corresponding signals to the protection and control circuit. The protection and control circuit then controls the switching circuit, to turn on or off the external power supply or battery. The device is then able to provide over- and under-voltage protection for the battery pack.The BQ2014SN-D120 also contains an integrated Li-Ion charging circuit. This enables it to charge the battery pack without requiring an external charger. It is programmed with a charging voltage, current, thermal regulation loop compensation and battery end-of-charge voltage limits to ensure safe and efficient charging. Once the battery is fully charged, the device will automatically switch from charging mode to battery monitor mode, ensuring the battery is well maintained.Also contained within the BQ2014SN-D120 is a safety timer circuit. This timer ensures safe operation by monitoring the time taken for charging, discharging and calibration process of Li-ion batteries. As it monitors the time taken for these processes, it will detect and react to any unexpected operations or short circuits that may occur, providing an extra layer of safety and reliability.In conclusion, the BQ2014SN-D120 is an ideal device for protection and charging of Li-ion battery packs in portable electronics. With precise current and voltage measurements, easy over-current, over-voltage and thermal protection, built in charger and a safety timer, the device ensures reliable and safe operation. It is a perfect solution for applications requiring precise power management and top-tier safety.

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