RT9169-18GX

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The RT9169-18GX is a voltage regulator from Richtek Technology Corporation and is part of its linear PMIC family. It is a low-Dropout Voltage regulator, which means its output voltage is greater than the input voltage. Due to its low power consumption, it is perfect for battery power applications. The RT9169-18GX is versatile and can be used for numerous applications, such as PC cards and MP3 players.

The RT9169-18GX voltage regulator is a 3 terminal non-isolated linear device that produces an output voltage of up to 18V with a dropout regulation of 200mV. It also has an operating temperature range of -40 °C to 85 °C. This device also allows for a wide output current rating, with a maximum output current of 250mA. It has good low-current performance and high power supply rejection ratio (PSRR) of better than 100dB. The RT9169-18GX features over-current protection and thermal shutdown for added safety. Additionally, it has a tiny package size allowing for a very low occupancy space.

The working principle of RT9169-18GX involves the conversion of an input voltage to a lower, constant output voltage through the feedback control of the current output. The voltage regulator includes an internal voltage-controlled transistor and a pass element. The voltage-controlled transistor is controlled by the output voltage, and it controls the pass element to adjust the output current accordingly. The output voltage is determined by comparing the voltage feedback voltage and the reference voltage, and the internal voltage-controlled transistor is controlled by the error amplifier accordingly.

The constant output current of the RT9169-18GX is regulated through an internal voltage-controlled transistor and pass element. The output current is regulated by the voltage drop across the pass element, which in turn is controlled by the voltage-controlled transistor. The feedback voltage is compared with the reference voltage inside the regulator, and the error amplifier then controls the voltage-controlled transistor to adjust the output current accordingly.

The RT9169-18GX is perfect for applications which require a low-Dropout Voltage regulator, because of its low power consumption, wide output current ratings and good low-current performance. Its wide operating temperature range allows for use in a variety of conditions. Additionally, its small size, high PSRR and over-current protection are also beneficial features. The working principle of this device is based on the feedback control of the output current by a voltage-controlled transistor, making it a great choice for applications such as PC cards and MP3 players.

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