MP28265EL-LF-Z

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:	1.1MHz
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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Introduction

MP28265EL-LF-Z is a DC-DC switching regulator IC. It provides high performance, efficient conversion of different input voltages to stabilized output power. By using a wide input voltage operating range and advanced technologies, the output voltage can be adjusted from 0.8V to 8V with a current up to 3A. The MP28265EL-LF-Z is an ideal solution for various applications that demand low input voltage, fast switching speed, and high efficiency.

Application

MP28265EL-LF-Z is suitable for multi-purpose power supplies, such as computing and networking equipment, wireless platforms, and portable electronics. It can also serve as a power solution in transportation, lighting, industrial control applications, etc.

Features

MP28265EL-LF-Z offers a wide input voltage operating range, allowing it to work efficiently with different input voltages. It also provides a built-in internal regulator which can output 0.8V to 8V as a constant voltage for various output requirements. In addition, it features a fast transient response that reduces or eliminates output deviation. MP28265EL-LF-Z is designed with a low quiescent current of 2.5mA and low noise operation, delivering high efficiency and long battery life. With low on resistance switching mosfet, the maximum output current can reach up to 3A. Furthermore, the built-in OVP/UVP/OVP (Over Voltage Protection/Under Voltage Protection/Over Temperature Protection) ensures complete protection from overload, over voltage, reverse voltage, and overheating.

Working Principle

The working principle of MP28265EL-LF-Z is based on Buck and Buck-Boost DC-DC voltage converter. When the input voltage is higher than the output voltage, it switches to Buck mode, which reduces the input voltage to the desired output voltage. On the other hand, when the input voltage is lower than the output voltage, it switches to Buck-Boost mode and boosts the input voltage to the desired output voltage. The voltage regulator uses an external feedback loop with an error amplifier to modulate its output voltage, ensuring that the output voltage remains stable at all times. In addition, a Pulse Width Modulation (PWM) signal is used to generate the switching of the power MOSFETs, controlling the magnitude of the output voltage. The PWM frequency is adjustable and can be adjusted to accommodate different application requirements. The MP28265EL-LF-Z also features a soft-start feature, which helps manage the startup current from the input side, thus, preventing the system from an over-amplified inrush current.

Conclusion

MP28265EL-LF-Z is an advanced DC-DC switching regulator with a wide input voltage operating range. With built-in over-voltage, under-voltage, and over-temperature protection, the regulator provides high performance, efficient power conversion and reliable power supply. It is suitable for various applications in the transportation, computing, networking and portable electronic industries.

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