MPQ2128DG-LF-Z

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PMICs (Power Management Integrated Circuits) are integrated circuits which manage and control the power supplied in a range of electrical systems from smartphones to commercial buildings. Voltage Regulators are devices which regulate the voltage of a power supply or system. DCDC Switching Regulators are a type of voltage regulator in which the voltage is regulated by rapidly switching on and off a switch at the input side of the regulator while the output is either maintained at its original input level or is forced to an adjustable output level.

The MPQ2128DG-LF-Z is a type of PMIC DCDC switching regulator. It is a two-phase, synchronous buck regulator with integrated FETs, capable of providing up to 4A to 4V from input voltages of 4.2V to 21V. It has good power performance, low noise, low radiation and low ripple characteristics. Its other features include: low quiescent current, programmable switching frequency, integrated slope compensator, external soft-start, phase-loss protections, overvoltage/overcurrent protections, programmable loop response and adjustable output voltage.

The MPQ2128DG-LF-Z is designed to be used in a wide range of applications including digital cameras, portable video players, satellite decoders, laptop computers, cellular phones, digital televisions and audio devices. It is suitable for applications that require low EMI, low noise, high power efficiency and high power density.

The working principle of the MPQ2128DG-LF-Z is relatively simple. The core of the circuit is the two synchronous buck-switching regulators. These two buck converters are used to transfer the energy from the input voltage source to the output voltage at a controlled rate. The input voltage is regulated by rapidly switching on and off the FET at the input side of the regulator. The output voltage is then maintained by regulating the pulse width modulation (PWM) signals sent to the two FETs on the output side. The FETs are then fired in sync with the incoming clock signal, which is then used to control the maximum and minimum output voltage. The external soft-start function reduces the inrush current on start-up and can also reduce the peak current without increasing EMI.

To sum up, the MPQ2128DG-LF-Z is a type of PMIC DCDC switching regulator which is designed to be used in a wide range of applications. Its features include low quiescent current, programmable switching frequency, integrated slope compensator, and external soft-start. Its working principle is relatively simple, and involves the use of two synchronous buck converters to transfer the energy from the input voltage source to the output voltage at a controlled rate. The FETs are then fired in sync with the incoming clock signal.

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