BQ24610

The BQ24610 is a highly integrated battery charger controller designed by Texas Instruments for single-cell lithium-ion and lithium-polymer batteries. It supports both USB and AC adapters as input sources, offering flexible power management in portable electronic devices. The device features an adjustable constant-current/constant-voltage (CC/CV) charging algorithm, ensuring safe and efficient battery charging while maintaining precise control over charge current and voltage levels. This charger integrates a high-efficiency synchronous buck converter, which minimizes power loss and improves thermal performance—critical for compact designs. It includes built-in protection mechanisms such as overvoltage, overcurrent, and overtemperature protection, enhancing system reliability under varying operating conditions. Additionally, the BQ24610 supports programmable charge termination and pre-charge modes, enabling optimal performance across different battery chemistries and states of charge. The chip provides comprehensive status monitoring through a dedicated I2C interface, allowing external microcontrollers to read charge parameters, fault conditions, and configuration settings. This feature simplifies system integration and enables intelligent power management in applications like wearables, medical devices, and IoT sensors. Its low quiescent current ensures minimal power consumption during standby or shutdown modes, extending battery life in battery-powered systems. Designed for space-constrained applications, the BQ24610 comes in a small 3mm × 3mm WSON package, making it ideal for ultra-thin and portable electronics. It operates over a wide input voltage range from 3.5V to 6.5V, accommodating various power sources including standard USB ports and wall adapters. The internal power MOSFETs reduce component count and board area, contributing to cost-effective and streamlined PCB layouts. The BQ24610 also supports dynamic power path management, allowing the system to be powered directly from the input source while simultaneously charging the battery—a key feature for uninterrupted operation in mobile devices. This functionality prevents battery drain during active use and ensures continuous system performance even when the battery is low. Furthermore, the device offers configurable charge current limits and voltage accuracy within ±1%, ensuring consistent and reliable battery health over time. With its robust feature set, high integration level, and support for industry-standard communication protocols, the BQ24610 is well-suited for applications requiring efficient, safe, and intelligent battery charging in modern consumer and industrial electronics.