BQ24006PWPG4

Series:	--
Packaging:	Tube
Part Status:	Active
Battery Chemistry:	Lithium-Ion
Number of Cells:	2
Current - Charging:	Constant
Programmable Features:	Current, Timer
Fault Protection:	Over Temperature
Charge Current - Max:	1.2A
Battery Pack Voltage:	8.4V
Voltage - Supply (Max):	10V
Interface:	--
Operating Temperature:	-40°C ~ 70°C (TA)
Package / Case:	20-PowerTSSOP (0.173", 4.40mm Width)
Supplier Device Package:	20-HTSSOP
Base Part Number:	BQ24006

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Battery chargers, or power management integrated circuits (PMICs), are devices used in many consumer and industrial applications to manage the charging of rechargeable batteries. The BQ24006PWPG4 is one such PMIC. It is a charger for Lithium-ion (Li-ion) and Li-po batteries, and is designed for high efficiency and low power consumption. In this article, we will explore the application fields and workings of BQ24006PWPG4.
The BQ24006PWPG4 is capable of charging batteries from various sources, such as USB connectors, 12-V adapter, and DC adaptor. It can operate at a maximum of 5V/2A without an external MOSFET. The device has a wide range of protection features, including an input overvoltage protection, an over-temperature protection, an under-voltage protection, and a short circuit protection. It is also very efficient, with the device having an efficiency over 94%. The device is also small and light, with it only needing a 5x5mm footprint and weighing only 4 grams.
The working principles of the BQ24006PWPG4 rely on four basic steps. Firstly, the charger will assess the battery voltage, current and temperature. Depending on these values, the charger will switch between reset, trickle, fast, pre-charge and termination modes. In reset mode, the device will reset, which will prepare the device for charging. The device then goes into trickle mode to allow a low amount of current to flow over a period of time, slowly raising the battery voltage. This is useful for ensuring that the battery has enough charge to start the charging process.
The next stage is the fast charge mode, where the device will rapidly charge the battery up to its maximum capacity. In this mode, the charging current will be regulated to prevent overcharging. Following this is the pre-charge mode, which is used to check the battery before it enters the fast charging mode. This helps to ensure that the battery is suitable for fast charging and not damaged. Finally, the termination mode will stop the charging process once the battery is fully charged.
The BQ24006PWPG4 is mainly used in mobile and tablet devices, due to its high efficiency and small footprint. The device can also be used in medical systems, robotics, and automotive applications. It has been designed to be used in conjunction with a host microcontroller that handles the safety features and control of the charge cycle to ensure that the battery is safely charged and not damaged.
In conclusion, the BQ24006PWPG4 is a small, high efficiency, and safe PMIC device used to charge a wide range of Lithium-ion and Li-Po batteries. The device uses a four steps process to regulate the charging, which is completed in reset, trickle, fast, pre-charge and termination modes. The device has several protection features to ensure that the battery is safe during the charging process. It is mainly used in mobile and tablet devices, but can also be used in other applications such as medical systems, robotics, and automotive applications.

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