FX033Z

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The FX033Z is a low-voltage DC-DC switching regulator, part of a family of products in the PMIC–Voltage Regulators–DC DC Switching Regulators category. The FX033Z voltage regulator is designed to provide a regulated output voltage over a wide input voltage range and its applications range from powering cellular phone sub- blocks to powering low-power embedded microprocessor cores. Its low-voltage operation enables tight integration with the cell phone system, making it suitable for use in various mobile phone designs.

The FX033Z is a DC-DC switching regulator which contains two power stages: the power switch and the power controller. The power switch consists of a N-channel Metal Oxide Semiconductor (MOS) MOSFET with a Phase Locked Loop (PLL) controller and the power controller IC, an analog IC which processes the input voltage, the current and voltage feedback signals and the output voltage of the regulator. It also contains the voltage sensing feedback reference components, bipolar transistors and a few resistors.

The FX033Z voltage regulator provides continuous, regulated output voltage over a wide input voltage range, with a nominal ouput voltage adjustable up to 5 V. It can be programmed and optimized for different applications by changing certain parameters such as the switching frequency, the voltage and current limit and the minimum on-time.

The operation principle of the FX033Z voltage regulator is quite simple. In normal operation, the PLL controller will adjust the frequency of the oscillator for each switching cycle. This adjusts the input voltage to the desired output voltage by varying the duty cycle of the power switch. The power controller then uses the feedback loop to regulate the output voltage and current so that it remains constant and within tolerance.

The FX033Z voltage regulator offers high efficiency and a wide operation temperature range, making it suitable for various mobile phone designs. Furthermore, its low-voltage operation, high power density and small package size offer significant advantages over linear regulators.

Overall, the FX033Z is an excellent choice for powering cellular phone sub-blocks, embedded microprocessor cores, and other low-power applications. Thanks to its wide range of features and its ability to provide a highly efficient and low-voltage regulation of the output voltage, the FX033Z is a reliable and cost-effective choice for a range of different applications.

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