BQ24078RGTT

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Active
Battery Chemistry:	Lithium-Ion
Number of Cells:	1
Current - Charging:	Constant
Programmable Features:	Current, Timer
Fault Protection:	Over Temperature, Over Voltage, Reverse Current, Short Circuit
Charge Current - Max:	1.5A
Battery Pack Voltage:	4.35V
Voltage - Supply (Max):	6.4V
Interface:	USB
Operating Temperature:	-40°C ~ 125°C (TJ)
Package / Case:	16-VFQFN Exposed Pad
Supplier Device Package:	16-VQFN (3x3)

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Introduction

The BQ24078RGTT is a programmable high-performance synchronous rectified step-down buck regulator designed to operate from a wide input voltage range. It is specifically designed for battery-powered systems such as smartphones, Internet of Things (IoT) applications, laptop computers, and more. This power management IC (PMIC) is designed to provide efficient, quiet operation and helps to maximize the battery life of these applications.

Application Field and Working Principle

The BQ24078RGTT is designed for use as a battery charger (PMIC-Battery chargers). It is designed to provide high performance and reliable charging for any lithium ion battery chemistry. The IC integrates a power MOSFET, voltage regulators, and a timer to monitor the charging of a battery. It also provides a range of safety and protection features, such as over-voltage protection, over-current protection, temperature sensing and monitoring, and automatic recharging. To achieve this, the BQ24078RGTT uses a patented soft-start mechanism that gradually increases the output voltage while monitoring the battery voltage and current. This helps to prevent dangerous surges and keep the battery charged safely and efficiently.

Features

The BQ24078RGTT features a wide 5V to 22V operating voltage range, making it suitable for most battery chemistries. It has a low RDSON power MOSFET with a maximum switching frequency of 1MHz and a quiescent current of 10mA. The IC also features reverse current protection, low-battery detection, and charge status output (EOC) pin. This feature set provides complete protection against unsafe charging conditions and helps to extend battery life. The IC also features fully-featured reverse power protection, over-temperature protection, and short-circuit protection, making it a reliable and versatile battery charger.

Conclusion

The BQ24078RGTT is an advanced power management IC specifically designed for battery-powered applications. It offers a wide input voltage range, low quiescent current, and a range of safety and protection features. Its integrated power MOSFET and synchronous rectified buck regulator provide efficient and reliable charging for any lithium ion battery chemistry. With its proven performance and reliability, the BQ24078RGTT is an ideal solution for battery-powered applications in need of reliable, efficient power management.

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