S-1121B49MC-N3ITFG

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The S-1121B49MC-N3ITFG is a voltage regulator which belongs to the category of PMIC - Voltage Regulators - Linear. This regulator is a high accuracy, low quiescent current, and low dropout linear regulator. The S-1121B49MC-N3ITFG is ideal for applications where power savings and long battery life play a major part, such as portable electronic devices.

The S-1121B49MC-N3ITFG is capable of providing up to 49 mA of continuous output current, and can operate from either an input voltage range of 2.3 to 7.0 V, or between an adjustable voltage range of 2.2 to 8 V. This regulator has a guaranteed dropout voltage of -0.3V, meaning that a minimum input voltage of 1.7 V minimum is necessary for the regulator to operate correctly.

It is also important to note that the S-1121B49MC-N3ITFG includes an on/off switch, allowing it to be turned off when not in use. This feature makes the regulator more power efficient, as it eliminates the need to power the device when not in use.

The S-1121B49MC-N3ITFG also 24 in/out pin SOT-23-5 (UTDFN) package and has a shutdown PIN which is capable of controlling both the input and output of the regulator. For applications requiring battery saver modes, this allows a further reduction of power consumption.

The key advantages of the S-1121B49MC-N3ITFG is its low dropout voltage and very low quiescent current. This regulator also allows for a wide range of input voltage, and can handle large input voltage transients up to 0.8V without triggering any sort of error. This regulator also provides high PSRR of -75dB min at the very high frequency (1 MHz); therefore, it is ideal for noise-sensitive applications such as those found in portable audio products.

The device also has an output switch current limit of 25mA, which ensures the circuit is protected from any possible short-circuit or overload condition. In addition, the device features ± 2% regulation, which is ideal for radio or audio applications where power stability is necessary.

The working principle of the S-1121B49MC-N3ITFG is similar to other voltage regulators, however the difference with this particular regulator is the on/off switch which allows for the power to be shut off when not in use or when the power input is below its certain threshold. In normal working conditions, the voltage regulator will take the input voltage and convert it down to the desired output voltage as dictated by the user. This is accomplished using a series of active components and a fixed frequency oscillator.

The S-1121B49MC-N3ITFG is a high accuracy, low dropout and low quiescent current linear regulator is ideal for applications such as portable audio products, where noise sensitive applications are required, as well as any application where power savings and long battery life are of utmost importance. The device is capable of providing up to 49 mA of continuous output current, and has an adjustable voltage range of 2.2 to 8 V. Additionally, the device features an on/off switch for maximum power efficiency, and features ± 2% regulation. The device is also protected from short circuit or overload conditions by its output switch current limit.

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