BQ24620RVAT

The BQ24620RVAT is a highly integrated switch-mode battery charge controller for 2-series, 3-series, and 4-series cells in a wide range of battery pack applications. It offers a high level of flexibility and safety for charging lithium-ion (Li-Ion) and nickel metal hydride (NiMH) batteries.

Pinout

(Note: The pin configuration below is a general representation. Refer to the specific datasheet for precise details.)

• VBAT: Battery voltage input
• TS: Temperature sense input
• PROG: Programming resistor connection
• VSS: Ground connection
• CE: Charge enable input
• VINDPM: Input voltage DPM
• PG: Power good output
• STAT: Status indication
• PGOOD: Charge good indication
• TS2: Second temperature sense input
• IRCOMP: Current sense resistor connection

Circuit Diagram

Include a circuit diagram illustrating the connections and operation of the BQ24620RVAT IC for a visual representation.

Key Features

• High Integration: The BQ24620RVAT integrates a range of features, including full synchronous PWM controller, high-accuracy voltage regulation, and charge preconditioning.
• Programmable Charge Parameters: It allows programmable settings for charge current, minimum system voltage, and charge voltage thresholds to accommodate various battery pack configurations.
• Safety and Protection: This controller includes built-in safety protections such as input overvoltage protection, overcurrent protection, and thermal regulation, ensuring safe charging operation.
• Wide Input Voltage Range: Operating over a wide input voltage range, the BQ24620RVAT supports various power sources for charging applications.
• Charge Status Indication: The IC provides status indication outputs for power good (PG) and charge good (PGOOD), facilitating system monitoring.

Note: For detailed technical specifications, please refer to the BQ24620RVAT datasheet.

Application

• Portable Electronics: Ideal for charging battery packs used in portable electronic devices such as smartphones, tablets, and portable power banks.
• Energy Storage Systems: Suitable for battery management and charging in energy storage systems, including solar energy storage and uninterruptible power supplies.
• Electric Vehicles: Used in electric vehicle battery charging systems to provide efficient and safe charging for Li-Ion battery packs.

Functionality

The BQ24620RVAT is designed to provide a highly integrated and flexible solution for charging lithium-ion and nickel metal hydride battery packs. Its programmable features and safety protections make it suitable for diverse battery pack applications.

Usage Guide

• Battery Connection: Connect the battery pack to the VBAT pin and ensure proper polarity.
• System Configuration: Use the PROG pin to program the charge parameters according to the battery pack configuration.
• Status Monitoring: Monitor the charge status and system status through the PG and PGOOD outputs, and utilize the STAT pin for status indication.

Frequently Asked Questions

Q: Can the BQ24620RVAT charge multiple series of battery cells?
A: Yes, the BQ24620RVAT is capable of charging 2-series, 3-series, and 4-series battery cells for versatile battery pack applications.

Q: What safety features does the BQ24620RVAT provide?
A: The BQ24620RVAT includes built-in protections such as input overvoltage protection, overcurrent protection, and thermal regulation to ensure safe charging operation.