MP28114DG-LF-Z

Voltage - Input (Max):	6V
Supplier Device Package:	8-QFN (2x2)
Package / Case:	8-TFDFN Exposed Pad
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C (TA)
Synchronous Rectifier:	Yes
Frequency - Switching:	1.7MHz
Current - Output:	600mA
Voltage - Output (Max):	6V
Voltage - Output (Min/Fixed):	0.6V
Series:	--
Voltage - Input (Min):	2.5V
Number of Outputs:	1
Output Type:	Adjustable
Topology:	Buck
Output Configuration:	Positive
Function:	Step-Down
Part Status:	Active
Packaging:	Tape & Reel (TR)

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PMIC - Voltage Regulators - DC DC Switching Regulators

DC to DC switching regulators are the main power converter components for mobile device or other electronic product applications. The MP28114DG-LF-Z power IC from Monolithic Power Systems (MPS) is a versatile DC to DC converter that enables designers to reduce the size and complexity of their systems. It packs high performance in a small package and is designed for working with a wide range of input and output voltages. This article will discuss the application field and working principle of the MP28114DG-LF-Z.

Applications of the MP28114DG-LF-Z

The MP28114DG-LF-Z is mainly used in mobile device and other portable applications where size and system cost are essential. The device can provide an output voltage of 0.8V to 5.0V with excellent load and line regulation. Its switching frequency can be adjustable from 500 kHz to 3 MHz allowing flexible design and system optimization. The device is suitable for applications such as discrete power management, portable system power management, white LED backlighting, gaming console and HDTVs.

MP28114DG-LF-Z Working Principle

The MP28114DG-LF-Z is a high efficiency, low noise switching regulator. It integrates a high-side synchronous rectifying switch and a low-side regulated MOSFET switch for bidirectional power conversion. It is capable of working with both buck (step-down) and boost (step-up) configurations. The device uses the Pulse Frequency Modulation (PFM) control scheme to ensure efficiency and output noise performance.The switching mode power supply is based on the principles of a standard resistor-capacitor (RC) low pass filter. The basic circuit consists of a switch, inductor, diode and output capacitor. The switch is alternately turned on and off at the desired frequency, allowing the inductor to store energy. This energy is then released once the switch is turned off, transferring the energy to the output node, producing a smoothed voltage.The MP28114G-LF-Z is an advanced switching regulator that uses a number of features to help maintain high efficiency and output noise performance. It includes a synchronous FET rectifier which is significantly more efficient than the typical diode rectifier. The addition of programmable frequency allows for system optimization and the device can be set to a frequency that best matches the current load conditions. The device also includes over-voltage and under-voltage protection along with a low quiescent current to ensure low power consumption.

Conclusion

The MP28114DG-LF-Z from Monolithic Power Systems is a highly efficient, low noise switching regulator designed for use in mobile and portable devices. The device is capable of working with a wide range of input and output voltages and is suitable for applications such as power management, LED backlighting and gaming console systems. Its advanced features such as synchronous rectifying FETs, adjustable frequency and over and under-voltage protection make it an ideal choice for designers looking to reduce size and complexity of their systems.

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