XC9111C181MR-G

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The XC9111C181MR-G is a synchronous step-down dc-dc switching regulator from Toshiba\'s XC9111 series of voltage regulators. This particular device can be used in a wide range of applications, as it is able to provide power to various components with its wide input voltage range (2.6V to 5.5V) and adjustable output voltage range of 0.6V to 5.5V. The built-in protection functions such as over current detection, under voltage lockout, and thermal shutdown make this regulator a reliable solution for many applications.

Application Fields

The XC9111C181MR-G is capable of providing power to a wide range of applications, including portable devices such as cellular phones, digital cameras, and personal multimedia players. Additionally, its exceptional efficiency, low quiescent current, and excellent transient response make it ideal for automotive applications such as car audio systems and navigation systems.

The XC9111C181MR-G can also be used in a variety of industrial applications, from audio amplifiers and household appliace controllers to micro-processor based applications. Moreover, the device can be used to provide optimal power management and reliable power supply for high power applications such as TV sets, home theater systems, and gaming systems.

Working Principle

The XC9111C181MR-G is a synchronous step-down dc-dc switching regulator that uses a high‑efficiency subsystem to convert an input voltage into a regulated output voltage. The device includes an internal power MOSFET that acts as a switch, and a buck controller that drives the switch. The buck controller generates a clock signal, and switches the internal MOSFET on and off based on the clock signal. As a result, energy is transferred from the input to the output, which results in the generation of a regulated output voltage.

The device also has current mode control with cycle-by-cycle current limit, which allows it to provide a steady output voltage with fast transient response, excellent load and line regulation. The device also features Enhanced Equilibrium Control, which reduces the drain-source MOSFET operating temperature under light loads and enhances the load transient response.

In addition, the device features an output voltage adjustment mode that can be continuously tuned from 0.6V to 5.5V. This allows the output voltage to be adjusted to match specific application requirements. All the features of the XC9111C181MR-G make it a reliable and energy efficient solution when it comes to powering various devices.

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