BQ 24777

BQ 24777

The BQ24777 is a high-efficiency, synchronous, NVDC-1 battery charge controller with system power monitor and processor hot indicator from Texas Instruments. It is designed to charge one, two, three, or four series lithium-ion (Li+) cells or one, two, or three series lithium phosphate (LiFePO4) cells. The BQ24777 has a number of features that make it ideal for a wide range of applications, including:

• High efficiency: The BQ24777 can achieve efficiencies of up to 96%, which helps to extend battery life and reduce heat generation.
• Programmable charge parameters: The BQ24777 allows the user to program the input current, charge current, and charge voltage. This flexibility allows the charger to be optimized for a specific application.
• System power monitor: The BQ24777 monitors the system power consumption and can adjust the charge current accordingly. This helps to ensure that the system has enough power to operate, even while the battery is charging.
• Processor hot indicator: The BQ24777 has a PROCHOT output that can be used to signal the system processor to throttle back its performance if the battery is getting too hot. This helps to prevent the battery from being damaged.

The BQ24777 is available in a small QFN package, making it ideal for space-constrained applications. It is also RoHS compliant and meets all major safety standards.

Here are some examples of applications where the BQ24777 can be used:

• Portable electronics, such as smartphones, tablets, and laptops
• Wearable devices, such as smartwatches and fitness trackers
• Industrial equipment, such as bar code scanners and handheld terminals
• IoT devices, such as smart thermostats and security cameras

The BQ24777 is a versatile and powerful battery charger that can be used in a wide range of applications. It is a popular choice for designers who need a high-efficiency, programmable charger with a small footprint and system power monitoring and processor hot indicator features.