TNY263P

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PMIC - AC DC Converters, Offline Switchers

TNY263P is an integrated circuit developed to convert AC power to DC power. It is often used as an offline switcher, meaning it can step down AC voltage, allowing regulated output from a small form factor. The TNY263P is commonly deployed in lighting systems and is suitable for use in a multitude of applications that require efficient and reliable power conversion.

The TNY263P has a very simple operating principle. The circuit features a power MOSFET which not only acts as a power switch but also monitors the rectified AC voltage. When the AC voltage is above or below the rectified voltage, it will shut itself off. The voltage is then rectified via four internal diodes, with the rectified DC voltage then used to control a MOSFET in the main circuit. A maximum gate voltage of 16V is supported by the TNY263P, and its gate turn-off threshold is adjustable.

The rectified DC voltage lets the circuit set the output voltage by controlling the MOSFET\'s gate. The maximum output voltage is limited and is staggered for the various TNY263P variants. This can be seen in the ‘Power Table’ of the TNY263P data sheet. As the device is a low standby power switcher, it is able to shut off by itself when the output voltage drops below certain levels. This means it can also be used as a no-load power saver.

An important feature of the TNY263P is its feedback loop. Its proprietary AC detection technology allows it to quickly detect when the AC has been applied and then act accordingly. This technology also allows it to adjust its output voltage quickly when changes in line voltage occur. Additionally, its unique voltage feedback loop allows it to publish output voltage reports, making it easier to accurately set the output voltage in the system.

The TNY263P also offers various protective features. Its overvoltage protection circuit prevents the device\'s output voltage from going beyond the set values, protecting the device from damage. Its thermal shutdown circuit also shuts off the device when the junction temperature reaches a certain value. Additionally, over current detection shuts off the device when the current exceeds the set threshold, preventing further damage.

The TNY263P is a feature rich and highly integrated switch mode AC to DC converter. It can be used for a variety of voltage regulation applications, from lighting systems to power supplies for small electronic components. It is also suitable for use in applications where a small form factor is needed and where transient voltage load will be encountered.

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