RT6266GSP

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The RT6266GSP is a high-efficiency and high-performance monolithic synchronous step-down DC-DC switching regulators designed for automotive and industrial applications. It is versatile, offering adjustable output voltage from 0.6V to 5.5V, and the operating efficiency of up to 96%. It features low noise and excellent EMI suppression, making it suitable for multi-core processor power applications in automotive, consumer and industrial applications.

The RT6266GSP is powered by a low-voltage (2.5V to 5.5V) input power supply and the output voltage can be programmed using a single external resistor. The output voltage can be reduced by decreasing the reference voltage to 0.6V with an increase of power efficiency. Other features include a wide operating temperature range from -40 to +125 degrees Celsius, a fast transient response, and a wide switching frequency range of 300kHz to 1.5MHz.

The main application area of the RT6266GSP is automotive and industrial power management. It can be used for different applications such as the regulation of 5V and 12V automotive lines, DC-DC step-down converters for processor cores, LED drivers, and charging of battery packs.

The working principle of the RT6266GSP is based on pulse width modulation (PWM). It utilizes a buck topology with a switching MOSFET and two inductors to control the output voltage. When the MOSFET is switched at a frequency determined by the voltage divider, current flows into one of the inductors and through the output capacitor. The other inductor absorbs energy from the circuit during the off-time and stores it, preventing it from damaging the output. The output voltage is then regulated at a pre-selected value by controlling the ratio of on-time to off-time.

The RT6266GSP delivers high efficiency, low output noise, and fast transient response for automotive and industrial applications. It simplifies system design and reduces overall system costs. It is designed for a wide operating temperature range and can be easily programmed for multiple output voltages and offers adjustable current limit protection.

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