BQ25600CYFFT Integrated Circuits (ICs)

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The BQ25600CYFFT is a highly integrated, cost-effective, and low power quasi-resonant flyback-based battery charger IC, designed for various portable products such as mobile phone, tablet, smart watch, and hearable products. It includes a synchronous rectifier, optimized quasi-resonant control circuitry, MOSFETS, internal power feedback loop, and other components, to deliver continuous and reliable power to the system.

Generally, PMIC - Battery Chargers can be categorized based on the type of power supply it uses, such as wall adapters, USB ports, and solar power sources as well as the voltage rating and current. The BQ25600CYFFT operates by automatically switching between buck and flyback topologies, to provide regulated power to the system without compromising efficiency.

The key features of the BQ25600CYFFT device include its low quiescent current and high efficiency. Furthermore, the device includes an integrated overvoltage protection circuit (OVP), overcurrent protection (OCP), and a thermal protection circuit. Additionally, the device features a low power sleep/wake mode and supports a fast 20mV line compensation, making it suitable for use in portable applications where short charging times are desired.

The wide input voltage range of the BQ25600CYFFT makes it suitable for applications with high line variation and wide temperature variability. For example, the device can be used in applications with input voltage range from ±8V to +32V and temperature range from -40°C to +85°C. The device provides four different charging states such as trickle charge, pre-charge, constant current, and constant voltage. The integrated micro-controller supports automatic cell balancing, which helps to balance the charge across multiple cells in a battery pack.

The integrated power feedback loop enables the device to precisely regulate the voltage at the output, while monitoring the impedance of the battery source. Additionally, the power feedback loop prevents overcharging of the battery by detecting the changes in the battery’s impedance and automatically switching over to lower charging current. This helps to protect the battery from overcharging and also helps to maintain the battery’s health over time.

The BQ25600CYFFT supports several protection features such as overvoltage protection (OVP), overcurrent protection (OCP), and thermal protection. Additionally, the device supports quick and reliable driverless battery connection and disconnection, making it ideal for designs where fast battery connection and disconnection is required. The device also supports USB-C power delivery protocols, allowing it to be used in USB-C portable applications.

In summary, the BQ25600CYFFT is a highly integrated, cost-effective, and low power quasi-resonant flyback-based battery charger IC designed for various portable products such as mobile phone, tablet, smart watch, and hearable products. Its main features include a wide input voltage range, four charging states, micro-controller support for automatic cell balancing, and integrated power feedback loop. It also supports USB-C power delivery protocols, making it suitable for use in portable applications.

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