SC197ULTRT

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The SC197ULTRT is a DC-DC buck-boost switching regulator from STMicroelectronics. It features an unique topology that enables it to step-up/step-down with a wide input voltage range, while maintaining a constant output voltage. It also reduces the complexity of external components and improve system efficiency.

The SC197ULTRT is designed for applications that require a low output voltage, such as mobile phones or wireless charging systems. With a wide input voltage range of 3.3V to 80V, it can be used for either step-up or step-down applications. It also has a wide operating temperature range of -40C to 85C, making it ideal for harsh conditions. The device features low switching frequencies, allowing it to achieve high efficiencies. It also has several protection features built in, such as undervoltage, overvoltage, overcurrent and short circuit protection.

The SC197ULTRT has a flexible current limit control and is capable of delivering high peak currents of up to 6A. It can be configured to provide either continuous or discontinuous current modes operation, making it suitable for applications that need high performance. Additionally, its wide output voltage range of 0.8V to 80V makes it suitable for a variety of different applications.

In terms of its working principle, the SC197ULTRT uses an innovative clockless control scheme to control the switching frequency and output voltage. This control scheme is based on the Buck-Boost control topology and relies on an on-board zero voltage switching (ZVS) discriminator to track the output voltage. This provides excellent control accuracy, while also minimizing the harmonic distortion of the output waveform. Additionally, it includes a voltage feedback reference and integrated synchronous rectifiers, allowing it to maintain a high level of efficiency, even under light load conditions.

The SC197ULTRT is a versatile device and is perfectly suited for applications that require efficient, highly accurate and low output voltage regulation. It is a reliable, efficient and cost effective solution for a wide range of applications and is sure to meet the needs of any application that requires a buck-boost converter.

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