LM3102QMHX/NOPB

Voltage - Output (Min/Fixed):	0.8V
Base Part Number:	LM3102
Supplier Device Package:	20-HTSSOP
Package / Case:	20-PowerTSSOP (0.173", 4.40mm Width)
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C (TJ)
Synchronous Rectifier:	Yes
Frequency - Switching:	Up to 1MHz
Current - Output:	2.5A
Voltage - Output (Max):	7V
Series:	Automotive, AEC-Q100, SIMPLE SWITCHER®
Voltage - Input (Max):	42V
Voltage - Input (Min):	4.5V
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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The LM3102QMHX/NOPB is a switching regulator, or “switcher,” designed to provide a fixed or variable output voltage with high efficiency. It is one of many PMIC (Power Management IC) offerings from Texas Instruments. This particular device is designed to operate with an input voltage of anywhere from 2.7V to 26V and operate at a frequency up to 5MHz.The LM3102QMHX/NOPB application field seeks to improve power efficiency in a variety of applications, including: motor drive solutions, consumer electronics, industrial solutions, and battery-powered equipment. It is particularly effective when used in applications in which the input voltage is higher than the output voltage; for example, in the case of a 12V input powering a 5V output, this device is far more efficient than linear regulators.In addition to its wide operating range, the LM3102QMHX/NOPB provides a number of integrated features for ease-of-design and reliable operation. These features include an output driver with programmable slew rate, integrated power MOSFETs, a current protection circuit, and an adjustable deadtime to reduce switching losses. This wide array of features, combined with the small form factor, makes the LM3102QMHX/NOPB an ideal solution for many applications.So what is the underlying working principle of this device? Put simply, this switcher is a DC-to-DC converter. It takes an input voltage, usually at a higher voltage than the desired output, and utilizes an oscillator and switching circuit to chop it up into smaller (usually much smaller) voltage levels. The frequency of the oscillator is then used to control the switching circuit which in turn, allows the desired output voltage to be attained.It is important to note that there are two main types of switching regulators: Buck and Boost. The Buck regulator is used when the output voltage needs to be lower than the input voltage. The Boost regulator is used when the output voltage needs to be higher. The device discussed in this article is a Buck regulator.The LM3102QMHX/NOPB utilizes an inductor in its switching circuit. When the switching circuit is closed, current flows through the inductor and creates a magnetic field. This field stores energy, and when the switching circuit is opened, the current no longer flows through the inductor. The stored energy is then released through a diode, and the desired output voltage is now available.In summary, the LM3102QMHX/NOPB is a PMIC, specifically a DC-to-DC switching regulator, designed to provide a fixed or variable output voltage with high efficiency. It is intended for motor drive solutions, consumer electronics, industrial solutions, and battery-powered equipment and utilizes an oscillator and switching circuit to chop up the input voltage into smaller levels. The wide range of integrated features and small form factor make it an ideal solution for many applications.

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