RT9266GX5

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The RT9266GX5 is a highly integrated, single-chip buck-boost DCDC switching regulator for use in automotive, industrial and general purpose applications. It unifies a buck-boost switcher and power-on reset controller with an adaptive control scheme in a single package. The combination of these components increases system reliability and accuracy. Additionally, the RT9266GX5 features a wide input voltage range and output power of up to 25W, making it well fitted for a wide range of applications.

Input and Output Voltage

The RT9266GX5 is ideal for applications where the input voltage 6≤Vin≤ 42V and the output voltage needs to be adjustable. The regulation range is set to have a minimum output voltage of 1.5V up to a maximum of 42V, with an accurate output voltage control by 0.2%. Output current up to 5A is also achievable.

Package

It should be noted that the RT9266GX5 is packaged in a thermally enhanced 0.7 “x0.7” QFN-14L-7x7mm package, requiring a low amount of external components. This offers the advantage of allowing for scalability, requiring only one or two external components for customizing the output voltage. It also reduces the total area requirement, providing a fast and robust solution for a smaller package.

Features

• Wide input voltage range: 6V to 42V
• Regulation range of 1.5V to 42V with ± 0.2% accuracy
• Up to 25W output power
• 5A output current
• Adaptive control scheme
• High integration, requiring only one external component
• Small 0.7”x0.7” QFN-14l-7x7mm package

Application Field and Working Principle

The RT9266GX5 is suitable for a variety of applications and environments, from industrial to automotive and general purpose systems. It is designed to reduce total system cost and improve size efficiency when compared with designs based upon regulators, MOSFETs and discrete parts.

The switching regulator is based upon an adaptive control scheme which utilizes an inrush control circuit, a wide range of load current tracking and other features to guarantee an efficient and clean DC/DC conversion process. Additionally, the high integration of the RT9266GX5 eliminates the need for additional power management and protection circuits, further reducing size and cost.

In a typical application the input voltage is applied to the RT9266GX5, which regulates the output voltage according to the desired setting. The circuit uses a buck–boost switcher in order to switch the output voltage at the highest frequency. This topology allows for maximum efficiency over a wide range of input/output voltages and output loads. SL/SS pins adjust the switching frequency from 200 to 800kHz, allowing for efficient power conversion over the entire range.

The RT9266GX5 also features overcurrent protection (OCP), thermal shutdown (TSD) and short circuit protection (SCP). These protection mechanisms ensure the RT9266GX5 operates safely, efficiently and reliably in adverse conditions.

In conclusion, the RT9266GX5 is an ideal solution for automotive, industrial, and general purpose applications that require buck-boost operation in a single, low-cost package. The unique combination of features offers high efficiency and a small package size, making it the perfect choice for a wide range of applications.

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