MP2357DJ-LF-P

Voltage - Input (Max):	24V
Supplier Device Package:	TSOT-23-6
Package / Case:	SOT-23-6 Thin, TSOT-23-6
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C (TA)
Synchronous Rectifier:	No
Frequency - Switching:	1.4MHz
Current - Output:	500mA
Voltage - Output (Max):	15V
Voltage - Output (Min/Fixed):	0.81V
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

DC-DC switching regulators are widely used in many applications for converting an input voltage to a lower or higher output voltage for a load. One of the most prevalent DC-DC switching regulators is the MP2357DJ-LF-P, which is a synchronous buck regulator. The regulator comprises of an input voltage Regulator IC, an external power switch and an integrated inductor.

Input Voltage Range

The input voltage of the MP2357DJ-LF-P regulator can range from 4.75V to 14V, making it ideal for a variety of applications such as high-voltage industrial systems and automotive applications. The input current rating is 3.5A and the output current is 0-2.5A. It has an adjustable output voltage range of 0.5V to 7.5V. The regulator can operate at switching frequencies up to 2MHz, allowing for fast transient response to changes in the load current.

Protection Features

The MP2357DJ-LF-P is designed with several protection features to ensure safe operation. It has an over-temperature, over-current, over-voltage, and short-circuit protection. For additional protection from unwanted transients, it also has an adjustable soft-start and a pulse frequency modulation (PFM) feature.

Efficiency, Switching Frequency and Power Stage Components

The regulator is able to achieve high efficiency by having both synchronous and low-side MOSFETs. It operates within an operating frequency range of 300kHz to 2MHz, accommodating for a variety of applications which require fast load transients. The external power switch can be chosen from a variety of different packages including the 8-Pin MSOP, the 10-pin HVSON, and the 10-pinµDFN.

Applications

The wide input voltage range and adjustable output voltage range of the MP2357DJ-LF-P makes it suitable for a wide range of applications. These include industrial DC-DC converters, automotive electronics, and telecom systems. Its protection features and high integration makes it particularly suitable for high power applications requiring multiple power rails.

Conclusion

The MP2357DJ-LF-P is a highly integrated synchronous buck regulator. Its wide input voltage range and adjustable output voltage range make it suitable for a wide range of applications from industrial converters to automotive electronics. It features several protection features and is able to operate at switching frequencies up to 2MHz for fast transient response to load current changes.

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