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The Texas Instruments BQ24073 is a highly integrated battery charger specifically designed for single-cell lithium-ion (Li-ion) and lithium-polymer (LiPo) batteries. It features a constant current (CC) / constant voltage (CV) charging algorithm, built-in power path management, and supports USB input. Functions 1. Battery Charging: The BQ24073 enables efficient charging of single-cell Li-ion and LiPo batteries using various power sources, including USB. 2. Power Path Management: The device supports power path management that allows simultaneous charging and system operation, ensuring that the system has a continuous power supply. 3. Integrated Current Regulation: It features adjustable charge current regulation suitable for different battery capacities. 4. Thermal Regulation: It includes built-in thermal regulation to prevent overheating during charging cycles. 5. Fault Protection: The device offers protection mechanisms, including overvoltage, overcurrent, and thermal shutdown. Applications 1. Portable Consumer Electronics: Used in smartphones, tablets, and wearables where efficient charging is crucial. 2. Battery-powered Devices: Ideal for applications requiring power management and an efficient energy source. 3. Power Banks: Employed in portable charging solutions for a variety of electronic devices. 4. Electric Toys: Often used in rechargeable battery-operated toys and gadgets. Alternative Parts Some alternative battery charger ICs to the BQ24073 include: - BQ24072: Similar functionality but with varying specifications. - BQ24230: Provides additional features like input current limiting and higher input voltage tolerance. - TP4056: A linear charger for lithium batteries with a simpler design. - MCP73831: A low-power Li-ion battery charger with basic features suitable for less demanding applications. Embedded Modules While no specific embedded modules feature the BQ24073 as a core component, many development boards may utilize similar ICs in combination with microcontroller platforms (e.g., Arduino, Raspberry Pi) tailored for battery-powered projects. Users can also design custom PCB modules incorporating BQ24073 to create battery management systems for various portable devices. Q&A Q1: What types of batteries does the BQ24073 support? A1: The BQ24073 supports single-cell lithium-ion (Li-ion) and lithium-polymer (LiPo) batteries. Q2: Can the BQ24073 operate while charging the battery? A2: Yes, the BQ24073 features power path management that allows the device to operate and charge the battery simultaneously. Q3: What are the protection features included in the BQ24073? A3: The BQ24073 includes several protection mechanisms such as overvoltage protection, overcurrent protection, and thermal shutdown protection. Q4: Is the charge current adjustable on the BQ24073? A4: Yes, the charge current on the BQ24073 can be adjusted to suit different battery capacities and charging requirements. Q5: Can I use the BQ24073 in low-power applications? A5: Yes, the BQ24073's efficient design makes it suitable for both low-power and medium-power applications in portable electronics.