MP2148GQD-18-Z

The MP2148GQD-18-Z is DC-DC switching regulator, which is a type of voltage regulator specifically designed to efficiently convert one DC voltage level to another. These regulators can be used to provide a wide range of output voltages from a single power supply with an output tolerance that generally falls within 5% of the set voltage. Package size for this component is 7.5mm x 8mm.

Applications

The MP2148GQD-18-Z can be found in a wide variety of applications, the cheapest and most robust single chip solution for the following applications:

• Smartphones (charger, audio amp, etc.)
• Notebook (TFT panel, etc.)
• Automobiles (air-conditioning, audio amp, etc.)
• Set top boxes (UTP controller, etc.)

Working Principle

The MP2148GQD-18-Z is a DC-DC buck switching regulator chip. It uses a switching element (MOSFET) to convert a high input voltage or current into a lower output voltage or current. The switching element is turned on and off at a high frequency, allowing the converter to handle a wide range of input voltages and currents, depending on the settings of the transistor. This regulator includes a control loop that monitors the output voltage, and adjusts the switch off time to control the converted output voltage. A small inductor is connected in series with the output to filter out any high-frequency switching noise. This regulator also has current and over temperature protection.

Key Features

The MP2148GQD-18-Z has the following features:

• Integrated MOSFETs reduce board size and components
• On-chip synchronous rectification reduces switching losses
• Output voltage can be programmed using external resistors
• Wide input voltage range (2.7 V to 5.8 V)
• Output voltage accuracy of 4% over temperature and voltage range
• Soft start and over current protection
• 142 kHz frequency switching
• High efficiency of over 95%
• 500 mA output current

Conclusion

The MP2148GQD-18-Z is an efficient and reliable DC-DC switching regulator that offers a wide range of input and output voltages, along with a range of protection features. This regulator is ideal for applications that require a low part count, small package size, and high power efficiency.