BQ2004PNG4

Series:	--
Packaging:	Tube
Part Status:	Not For New Designs
Battery Chemistry:	Multi-Chemistry
Number of Cells:	--
Current - Charging:	Constant, Pulsed
Programmable Features:	Voltage
Fault Protection:	--
Charge Current - Max:	--
Battery Pack Voltage:	--
Voltage - Supply (Max):	5.5V
Interface:	--
Operating Temperature:	-20°C ~ 70°C (TA)
Package / Case:	16-DIP (0.300", 7.62mm)
Supplier Device Package:	16-PDIP
Base Part Number:	BQ2004

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PMIC - Battery Chargers
The BQ2004PG4 is a simplistic, cost-effective PMIC solution for battery chargers. This versatile controller is able to be integrated for NiCd, NiMH or Li-ion battery types and their corresponding charge algorithms. This battery charger\'s features enable it to achieve high accuracy, good safety level, and provide an efficient and reliable charging solution.

Application Field
The BQ2004PG4 is an all-in-one, low-cost solution for battery charging. It is well-suited for cell phone, digital camera, and portable device applications. This controller features a high accuracy, low-power charging algorithm that is able to charge multiple-cell batteries. Additionally, it includes a battery voltage scanning function, making it a great choice for charger applications.

Working Principle
The controller is designed to provide a simple, high-efficiency charging control. It uses a current-mode control principle that allows for an adjustable charge current and a 3.2V to 5.6V charging voltage range. Additionally, it allows for a maximum charge current up to 500mA. Furthermore, the BQ2004PG4 has a wide input voltage range from 4.2V to 7.5V, giving it the ability to be operated from a wide variety of power sources.

Safety Features
The BQ2004PG4 is designed to provide the highest battery charging safety levels. It includes several built-in safety functions, such as battery over-voltage protection, temperature monitoring, input over-voltage protection, over-current protection, and over-charge protection. These features ensure the battery is charged safely and efficiently.

Efficiency
The BQ2004PG4 provides a highly efficient charging solution thanks to its current-mode control and unique cloud control loop. Its PWM frequency range allows for an adjustable duty cycle and its low-frequency burst mode reduces the power losses and improves efficiency. Additionally, the controller\'s system architecture enables it to maintain a high level of power efficiency throughout a wide range of charging conditions.

Conclusion
The BQ2004PG4 is a simple and cost-effective PMIC solution for battery charging. Its versatile design and safety features make it well-suited for a variety of cell phone, digital camera, and portable device applications. Additionally, its current-mode control and wide input voltage range allow it to be operated from a variety of power sources. Furthermore, its high efficiency and power savings capabilities make it a great choice for charger applications.

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