BD18GA3WEFJ-E2

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The BD18GA3WEFJ-E2 is a linear voltage regulator integrated circuit (IC) for applications in portable devices such as notebook computers and smartphones, amongst others where low power consumption is a requirement. It is classified as a PMIC (power management IC) and is a part of a range of linear voltage regulators, offering support for a wide input voltage range, allowing it to be used in industrial, communication and automotive markets due to its ability to be integrated into very low power systems.

The BD18GA3WEFJ-E2 is however particularly tailored for use in mobile applications due to its power saving capabilities. This is an essential requirement for the prolonged battery life that mobile and portable devices typically desire. Due to its low start-up current and low-input current (in sleep mode), it is ideal for applications that require an extended battery life in general.

BD18GA3WEFJ-E2 further stands out from other linear voltage regulators due to its low-noise operation and its thermal protection mechanism. This ensures that the device does not overheat and can operate for extended periods without issue.

Application Field

The BD18GA3WEFJ-E2 can be used in many different applications due to its flexible operating range of 3.5V to 8.5V and its low-noise output and output voltage range of 0.8V to 6V. Its wide range of features allows it to be applied in a variety of scenarios from providing steady voltage output in battery-powered products, and providing robust and accurate power supply for PCs and automotive electronics, power supplies for cellular components, to even standby power for the base station battery backup system.

Working Principle

The BD18GA3WEFJ-E2 is a linear voltage regulator, and as such it works by providing a regulated output voltage from an input that can vary from a lower or higher value. To do this, a sensing element measures the output voltage, which is then compared with a reference voltage, allowing the regulator to adjust the output voltage according to the comparison.

Linear voltage regulators such as the BD18GA3WEFJ-E2 use a three terminal system, typically labelled as input, output, and reference. The supply voltage is fed into the input terminal and when the voltage at the output terminal falls below the reference voltage as determined by the reference terminal, the regulator increases the output voltage in order to restore the output voltage level. Conversely, if the output is too high, the regulator decreases the output voltage.

The key benefits of the BD18GA3WEFJ-E2 for high performance applications are the low supply current, the low start-up voltage, the low input current in Sleep Mode and the thermal protection mechanism. The BD18GA3WEFJ-E2 is fast acting and has a low power consumption, making it ideal for applications that require an extended battery life, such as in smartphones and other mobile and portable devices.

In conclusion, the BD18GA3WEFJ-E2 is a versatile and powerful linear voltage regulator which is designed for applications needing extended battery life, low power consumption and low noise operation. Its wide input voltage range and thermal protection mechanism make it ideal for use in mobile and portable applications, as well as in industrial and communication applications.

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