BQ24020DRCR

Series:	bqTINY™-II
Packaging:	Tape & Reel (TR)
Part Status:	Active
Battery Chemistry:	Lithium-Ion/Polymer
Number of Cells:	1
Current - Charging:	Constant - Programmable
Programmable Features:	Current, Timer
Fault Protection:	Over Temperature
Charge Current - Max:	500mA
Battery Pack Voltage:	4.2V
Voltage - Supply (Max):	6.5V
Interface:	USB
Operating Temperature:	-40°C ~ 125°C (TJ)
Package / Case:	10-VFDFN Exposed Pad
Supplier Device Package:	10-VSON (3x3)
Base Part Number:	BQ24020

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Introduction

BQ24020DRCR is the main integrated charge management circuit used in Tablet PCs and other portable electronic devices. Developed by Texas Instruments, its application field and working principle are taken from the company\'s product manual. In this article, we will discuss the BQ24020DRCR tablet battery charger application field, general features and working principle.

Application Field

The BQ24020DRCR is a tablet battery charger that is specifically designed for battery charging applications. It is suitable for use in tablet PC, power bank and portable electronic device battery charging scenarios. It allows users to increase the battery capacity of their devices while reducing the number of charging cycles. The BQ24020DRCR is a highly efficient and compact power source with a wide input voltage range, allowing it to be used in a variety of industrial and consumer applications.

General Features

The BQ24020DRCR is a highly integrated charge management solution that provides an integrated voltage regulation, current sensing, and battery protection in a compact 5-mm x 5-mm QFN package. Its high efficiency output power and accurate current monitoring allow it to offer users a cost-effective solution for their device\'s battery charging needs. The BQ24020DRCR\'s wide input voltage range allows it to be used in international applications, making it ideal for global battery charging applications. Additionally, it can be programmed to accept a wide range of battery types, including both Li-ion and Li-polymer cells.

Working Principle

The BQ24020DRCR is a linear, non-isolated charge management solution. Upon connection to an AC power source, an input voltage is applied to the primary side of the paralleled MOSFETs, providing the power to charge the battery. The inductor then stores a portion of the input power and supplies it to the integrated switching MOSFET at a regulated frequency. This provides regulated current to the integrated linear MOSFET, which in turn supplies the regulated voltage to the battery. The feedback from the battery voltage is used by the integrated error amplifier to adjust the internal temperature compensation and output voltage accordingly. The BQ24020DRCR is designed to provide fast and safe charging, protecting both the battery and the device\'s electronics.

Conclusion

The BQ24020DRCR is a highly integrated charge management solution that offers an efficient and economical solution for tablet PC and portable electronic device battery charging applications. It features an input voltage range that allows it to be used in a wide range of international applications, as well as an integrated linear MOSFET and error amplifier that offers accurate current and battery protection. In summary, the BQ24020DRCR is an excellent choice for portable device battery charging applications.

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