S-817B26AY-B2-U

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The S-817B26AY-B2-U is a low-dropout (LDO) linear voltage regulator with very high precision. It is designed to provide a low-noise, adjustable output voltage between 0.45 V and 5.5 V. It supports a maximum output current of 200 mA and has excellent load and line regulation performance over a wide input voltage range. S-817B26AY-B2-U is a solution for applications such as power supply for low power micro-controllers, RF signal processing, DSPs and portable applications.

S-817B26AY-B2-U offers low dropout voltage, low quiescent current, low noise and high accuracy on the output voltage. Its 0.15V typical dropout voltage enables the regulator to maintain regulation even at low input voltage. High accuracy on the output voltage is achieved with the device\'s 2% initial accuracy and 0.3% output accuracy over temperature. The device also provides fast transient response to load and line changes and features an over-temperature and over-current protection.

The S-817B26AY-B2-U may be used as a step-down or step-up regulator depending on its logic voltage (VIN) vs. its output voltage (VOUT). A logic low signal to the shutdown pin (SHDN) will force the regulator into a shutdown mode where the current consumption is reduced to less than 1mA. This makes it ideal for applications where MOSFETs switch the power source to achieve power savings.

The device works on the principle of voltage regulation, which is a process of converting an unregulated voltage to a regulated voltage. It does this by converting the unregulated input voltage to a precise preset voltage, and then comparing the preset voltage to the output voltage to detect any errors (difference in voltage) and then correcting or regulating the output voltage by adjusting current or voltage from the power rail. To further explain this, the S-817B26AY-B2-U uses a feedback loop to sense the output voltage and compare it to the reference voltage. When the output voltage deviates from the reference voltage, the device adjusts the current delivery or voltage at the output. This compensates for any changes in the load, temperature or other environmental factors that might cause a variation in the output voltage.

The S-817B26AY-B2-U is also designed with a Ripple rejection/PSRR input pin which allows the user to reduce output voltage noise with feedback control. It also has a power-on-reset circuit that allows the device to recover from an over-current condition without having to reset the controller. This feature makes this regulator suitable for mobile and rugged applications.

In summary, the S-817B26AY-B2-U is a low-dropout (LDO) linear voltage regulator with very high precision. It supports a maximum output current of 200 mA and has excellent load and line regulation performance over a wide input voltage range. Its features such as a low dropout voltage, low quiescent current, low noise and high accuracy on the output voltage make it ideal for applications such as power supply for low power micro-controllers, RF signal processing, DSPs and portable applications. In addition, the device can reduce output voltage noise through its Ripple rejection/PSRR input pin and also has a power-on-reset circuit to recover from an over-current condition without having to reset the controller. It works by using a feedback loop to sense the output voltage and compare it to the reference voltage, and then adjusting the current delivery or voltage at the output in order to compensate any variation in the output voltage.

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