RT9163-33GGT

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The RT9163-33GGT is a step-down, monolithic, synchronous buck regulator integrated circuit (IC). It is designed to address the power supply requirements of microprocessors, digital signal processors (DSPs), and other applications that require tight, low voltage regulation. The RT9163-33GGT belongs to the PMIC (Power Management IC) family. In particular, it falls under the Voltage Regulators – Linear category, making it a reliable choice for many applications that require precise, cost-effective voltage regulation.

The RT9163-33GGT is capable of supplying a maximum output current of 5 A under a peak current-limit of 8 A. This IC features a wide input voltage range of 6 V to 14 V and output voltage of 0.6 V to 3.3 V. It has a low quiescent current, which is only 25 mA in the light-load condition. This IC also has a very low, up to 0.4 V, dropout voltage - an ideal feature for microprocessor power supplies.

The RT9163-33GGT offers an adjustable fixed frequency of 200 kHz - 600 kHz as well as a power-saving feature called pulse-skip mode operation to minimize the quiescent current. It can also be disabled with the OFF pin to nearly zero current. This feature is useful for reducing power consumption in light load situations and extending the battery life.

The RT9163-33GGT works according to the pulse-width modulation (PWM) scheme at a fixed frequency, but with variable duty cycle. During the output regulation, it compares the feedback voltage with an internal reference voltage of 0.6 V. The voltage error amplifier then uses a fixed gain amplifier to detect the differences. Based on this comparison, the average output voltage is adjusted by varying the duty cycle.

The RT9163-33GGT also features an onboard power good output indicator that asserts when the output voltage is within the feedback voltage range. This IC also includes integrated loop compensation components for easy implementation, as well as thermal shutdown circuitry to protect from short-circuit, under-voltage, and over-temperature conditions.

The RT9163-33GGT is equipped with numerous other useful features that make it a desirable choice for many applications. It has a high efficiency, low input ripple voltage and low output voltage ripple. This IC also includes a low-on-resistance output MOSFET that is capable of supplying up to 5 A with low heat dissipation.

In addition, its tiny TSOP-6 package is designed to reduce the PCB area in a smaller, more cost-effective application. It also has under-voltage lockout and adjustable soft-start time capabilities, which prevent the output voltage from rising too quickly during power-up.

Overall, the RT9163-33GGT is an ideal choice for a wide range of applications requiring precise, cost-effective low-voltage regulation. It is designed to address the power supply requirements of microprocessors, DSPs, and other critical applications. Its integrated features, small size, and high efficiency make it a desirable choice for many power management designs.

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