BQ29412DCTT

Series:	--
Packaging:	Tape & Reel (TR)
Lead Free Status / RoHS Status:	--
Part Status:	Active
Moisture Sensitivity Level (MSL):	--
Function:	Battery Protection
Battery Chemistry:	Lithium-Ion
Number of Cells:	2 ~ 4
Fault Protection:	Over Voltage
Interface:	--
Operating Temperature:	-40°C ~ 110°C (TA)
Package / Case:	8-LSSOP, 8-MSOP (0.110", 2.80mm Width)
Supplier Device Package:	SM8
Base Part Number:	BQ29412

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Introduction to BQ29412DCTT

The BQ29412DCTT is a Li-ion battery protector designed by Texas Instruments, offering your system protection and flexibility while also saving time and costs. It is a 3-cell series Li-ion battery protector, targeting mobile devices such as mobile phones and tablets.This device can protect the battery cells from over-voltage, over-current, over-temperature and under-voltage. It includes a separate integrated power FET on each line for maximum protection of the battery and for cell balancing, with open-drain faults outputs. Moreover, it supports temperature monitoring, battery pre-charging, and sleeps modes, which also guarantee an effective protection of the battery in different stages of the charging process.

BQ29412DCTT Application Field and Working Principle

BQ29412DCTT is mainly used in mobile device battery management, such as mobile phones, tablets and watches. It provides electrical protection to the battery and ensures efficient operation under different conditions.The working principle of BQ29412DCTT is to maintain the cells’ voltages within a certain balance range, preventing them from overcharge, undercharge and overcurrent. This is necessary for the battery’s effective operation and to avoid any damage to the battery.In order to achieve its goal, BQ29412DCTT constantly monitors the voltage of each cell and compares it with the reference voltage. Once the cell voltage goes beyond the threshold, the FET is activated and power delivery is limited to ensure each cell\'s safety.The BQ29412DCTT also has an independent power FET which works separately from conventional power management ICs. This FET is capable of engaging an open-drain fault signal to discharge the cells in case of external shorts circuit or over current. It prevents any damage to the components and keeps the battery safe.Moreover, the BQ29412DCTT also offers temperature monitoring and pre-charging capabilities. It automatically measures the cell temperature to make sure the temperature does not exceed the set threshold. Additionally, it can pre-charge the cells with a low voltage before it starts the actual charging to avoid overcharging.

Conclusion

In conclusion, the BQ29412DCTT is a 3-cell series Li-ion battery protector which is suitable for mobile devices, such as mobile phones and tablets. It can prevent the battery from over-voltage, over-current, over-temperature and under-voltage, as well as guaranteeing a safety power delivery process. Additionally, it also monitors temperature, provides pre-charging capabilities and uses an independent power FET to discharge cells when necessary.

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