MP8725EL-LF-P

Voltage - Input (Max):	21V
Supplier Device Package:	14-QFN (3x4)
Package / Case:	14-VFDFN Exposed Pad
Mounting Type:	Surface Mount
Operating Temperature:	-20°C ~ 85°C (TA)
Synchronous Rectifier:	Yes
Frequency - Switching:	500kHz
Current - Output:	5A
Voltage - Output (Max):	18.9V
Voltage - Output (Min/Fixed):	0.8V
Series:	--
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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PMIC - Voltage Regulators - DC DC Switching Regulators

The MP8725EL-LF-P is an integrated power management IC (PMIC) designed for portable applications requiring an efficient and high-performance DC-DC switcher. The device is part of a family of PMICs offered by Monolithic Power Systems (MPS).The MP8725EL-LF-P integrates all the necessary functions into a single-package solution. This approach enables a compact, reliable, and high-performance solution, while reducing system size and cost. The device is ideal for a wide range of applications, including notebooks, tablet PCs, and similar portable devices.

Application Fields

The MP8725EL-LF-P DC-DC switcher is suitable for a variety of portable applications, such as notebook PCs, tablet PCs, digital media players, portable games, and more. The device has adjustable output voltage, programmable switching frequency, and adjustable duty cycle. This makes it suitable for a wide range of power levels and environments. The device also meets the most recent Intel performance guidelines.The device is optimized for providing excellent power efficiency, allowing for longer battery life and higher performance systems. Additionally, the device has a low output voltage ripple, which helps improve system reliability and reduce unnecessary power consumption.

Working Principle

The MP8725EL-LF-P is a synchronous buck DC-DC switcher. It converts an input voltage to a regulated output voltage. The device integrates both a switch-mode converter and a low-dropout (LDO) linear regulator.The switch-mode converter consists of an internal high-side and low-side MOSFET switch, control circuit, and protection circuit. The high-side and low-side MOSFET switch are alternately driven to convert the input voltage to the output voltage. The control circuit is responsible for the proper operation of the switch-mode converter and provides an output voltage regulation.The integrated LDO linear regulator provides a stable output voltage, independent of input voltage and load current. It works by converting a larger input voltage to a smaller, controlled output voltage. The LDO regulator consists of an amplifier, a regulator element, and a pass-through element. The amplifier provides current limiting, UVLO, and thermal protection. The regulator element provides voltage regulation and the pass-through element is responsible for the output voltage.

Conclusion

The MP8725EL-LF-P DC-DC switcher from Monolithic Power Systems is a highly integrated and efficient power solution for portable applications. The device integrates a switch-mode converter and LDO regulator, allowing for a compact and cost-effective solution. The adjustable output voltage, switching frequency, and duty cycle provide flexibility for a wide range of power levels and environments. The device provides excellent efficiency and low output voltage ripple for long battery life and high system performance.

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