BD9886F-E2

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The BD9886F-E2 integrates an adjustable voltage regulator, integrated power FETs and a buck converter into one single 8-pin SOT-23 miniature package, allowing for flexibility and miniaturization. It is an ultra-low static power consumption solution for lithium ion battery powered applications, and typically fixed at 1.2V. The BD9886F-E2 has a wide range of application fields, including but not limited to digital cameras, digital and video players, GPS devices, and Bluetooth and wireless devices.

The working principle of the BD9886F-E2 is based on the buck switching regulator concept. The chip is capable of controlling the current flows into and out of the battery as well as the current flow through the external power FETs. This allows the system to quickly adjust the voltage levels to suit the external device’s needs. A voltage feedback loop is also employed to regulate the output voltage of the BD9886F-E2, increasing stability and efficiency. This feature allows the BD9886F-E2 to operate over a wide range of input and output voltages.

The BD9886F-E2 provides a built-in voltage regulator and power FETs, eliminating the need for external components and reducing overall system cost. Furthermore, its integrated power FETs enable high-side current sensing, providing a safe and reliable operation in the event of a short-circuit or over-current protection. In addition, the BD9886F-E2 features an adjustable current limit, ensuring that energy production from the battery is optimally used.

The BD9886F-E2 also integrates a temperature sensor to accurately monitor the junction temperature of the device. This is useful for thermal protection or for increasing the life span of the device, as the BD9886F-E2 will automatically switch to low voltage mode in the event of abnormal temperature rise. Furthermore, the BD9886F-E2 is also HIP (high-side protection) compliant, which means that the power FETs are protected against over-voltages and inrush currents.

Overall, the BD9886F-E2 is ideal for ultra-low static power consumption solutions in lithium ion battery powered applications where space and cost savings are important. Its adjustable voltage regulator and integrated power FETs enable high-side current sensing, temperature monitoring, and HIP compliant operation, providing reliable operation in a wide range of applications.

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