XC9236A18CER-G

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XC9236A18CER-G Application Field and Working Principle

The XC9236A18CER-G is a DC/DC switching regulator integrated circuit intended for general purpose power supplies and battery operated applications. It is classified as a PMIC (Power Management IC) and is part of the Voltage Regulators & DC DC Switching Regulators category. This IC is an efficient, step-down switching regulator that provides a regulated output voltage of 1.8V at currents up to 0.8A.

Main Features of the XC9236A18CER-G

• High efficiency of up to 97%
• Wide input voltage range from 3.0V to 6.5V
• Low quiescent current of 0.34mA
• Adjustable 1.8V output voltage
• Current limit protection and short-circuit protection

Applications of the XC9236A18CER-G

The XC9236A18CER-G is an ideal choice for battery-operated applications, allowing for higher efficiency, greater battery life and reduced heat dissipation. Its wide input voltage range and adjustable output voltage makes it a great solution for applications requiring a regulated output voltage of 1.8V. Possible applications include, but are not limited to, portable audio players, digital cameras, PDAs, and other battery-powered devices.

Working Principle of the XC9236A18CER-G

The XC9236A18CER-G DC/DC switching regulator works by shutting off the power supply during the switching cycle then turning it on again when the output voltage is at or close to the desired voltage. This cycle is repeated many times per second in order to maintain a stable output voltage level. The XC9236A18CER-G is a synchronous buck switching regulator, meaning it uses an active device (in this case, a MOSFET) to regulate the output voltage and provide current limiting, short circuit protection and other protection features.

The XC9236A18CER-G has several stages in its operation. First, the voltage source is connected to the buck MOSFET propagating a current through the winding of an inductor (L1). The buck MOSFET then switches off, causing a voltage to be induced in the inductor’s winding (Vin). The induced voltage is then transferred to the load by the low-side MOSFET, providing a stable output voltage (Vout). Additionally, a feedback loop is used to monitor the output voltage, keeping it at or close to the desired value.

Conclusion

The XC9236A18CER-G DC/DC switching regulator is a low power, high efficiency, step-down switching regulator that is perfect for battery-operated applications, offering a wide input voltage range and adjustable output voltage. Its synchronous buck switching regulator design ensures a stable and reliable output voltage, making it an ideal choice for portable electronic devices.

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