TPS51631ARSMT

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TPS51631ARSMT is a high precision, low dropout voltage regulator integrated circuit (IC) series. It features an internal programmable current limit, adjustable output voltage, over-temperature protection and short-circuit protection. It is primarily used to produce a stable dc supply from an unregulated source. With up to 93% power efficiency and a wide temperature range of -40°C to + 125°C, the TPS51631ARSMT is suitable for many taxing application fields.

Applications of TPS51631ARSMT include automotive, medical equipment, networking systems, industrial control and lighting systems. It provides an output voltage with ±1.5% accuracy, which is suitable for powering most processors, memory and peripherals, reliable and low cost voltage regulation. The TPS51631ARSMT also has an embedded supervisory circuit to provide accurate power-on reset, power good signals and system sequencing functions.

The working principle of the TPS51631ARSMT is based on a proprietary switching topology that integrates a voltage-controlled oscillator (VCO) with a fixed-frequency synchronous buck controller. The VCO adjusts the switching frequency to sustain a constant output voltage over varying supply conditions such as load and line changes. The buck controller drives the power switches to provide a regulated output voltage from the input source.

The TPS51631ARSMT has an 800 mV low dropout voltage, which ensures a minimal drop in output voltage when the input voltage decreases. An adjustable current limit provides the user with the flexibility to protect against accidental brief high current surge events and protect components from over-current damage. Additionally, an internal thermal limit function provides over-temperature protection for the device and the system.

The combination of features, such as the wide temperature range, up to 93% efficiency, internal protection and accurate voltage regulation, makes the TPS51631ARSMT ideal for applications in various fields and requires a reliable power supply with high accuracy, low noise and strict compatibility requirements.

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