BQ24090DGQT Integrated Circuits (ICs)

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Active
Battery Chemistry:	Lithium-Ion/Polymer
Number of Cells:	1
Current - Charging:	Constant - Programmable
Programmable Features:	Current
Fault Protection:	Over Temperature, Over Voltage, Short Circuit
Charge Current - Max:	1A
Battery Pack Voltage:	4.2V
Voltage - Supply (Max):	6.45V
Interface:	USB
Operating Temperature:	0°C ~ 125°C (TJ)
Package / Case:	10-TFSOP, 10-MSOP (0.118", 3.00mm Width) Exposed Pad
Supplier Device Package:	10-MSOP-PowerPad
Base Part Number:	BQ24090

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Introduction

PMIC - Battery Chargers are important components in many electronic devices, providing a safe and reliable way to charge batteries used in portable devices. The BQ24090DGQT is a PMIC - Battery Charger that is used in many applications and is known for its high efficiency and wide voltage range. This article will provide an overview of the BQ24090DGQT application field and working principle.

Application Field

The BQ24090DGQT is mainly used in portable electronic devices such as mobile phones, digital cameras, and MP3 players. These devices require a reliable and efficient power source and the BQ24090DGQT provides that. It is a highly efficient battery charger with high charging current and wide input voltage range, going from 0 to 20V. It is also designed to work with different kinds of batteries such as Lithium-Ion and Nickel-Metal Hydride.

Features

The BQ24090DGQT has a number of features that make it desirable for portable devices. It has an adjustable charging current that can range from 0.1A to 1A, allowing the user to easily choose the optimal charge rate. It also has over-voltage and reverse current protection, to avoid any possible damage to the device.The BQ24090DGQT also has an adaptive voltage control system that automatically adjusts the input voltage to the optimal level, depending on the battery\'s current state and the charge rate, ensuring maximum efficiency and safety. Furthermore, it incorporates an open-drain ready signal, so the user can easily monitor the status of the charging process.

Working Principle

The BQ24090DGQT works using a buck-boost topology. This means that it can step up or step down the voltage depending on the battery\'s current state. It uses a capacitor to store energy and then releases it as current when needed. This energy storage and release is what allows the BQ24090DGQT to provide a safe and reliable charging source for batteries. When the battery\'s voltage is higher than the input voltage, the BQ24090DGQT will step down the voltage and charge the battery. When the battery\'s voltage is lower than the input voltage, the BQ24090DGQT will step up the voltage and charge the battery.

Conclusion

The BQ24090DGQT is a PMIC- Battery Charger that is widely used in many applications due to its high efficiency and wide voltage range. It has an adjustable charging current and other features that make it suitable for use in portable devices, such as mobile phones, digital cameras, and MP3 players. Its working principle is based on a buck-boost topology, making it suitable for different kinds of batteries.

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