MP1541DJ-LF-ZX

Series:	--
Packaging:	Cut Tape (CT)
Part Status:	Active
Function:	Step-Up
Output Configuration:	Positive
Topology:	Boost
Output Type:	Adjustable
Number of Outputs:	1
Voltage - Input (Min):	2.5V
Voltage - Input (Max):	6V
Voltage - Output (Min/Fixed):	3V
Voltage - Output (Max):	22V
Current - Output:	300mA
Frequency - Switching:	1.3MHz
Synchronous Rectifier:	No
Operating Temperature:	-40°C ~ 85°C (TA)
Mounting Type:	Surface Mount
Package / Case:	SOT-23-5 Thin, TSOT-23-5
Supplier Device Package:	TSOT-23-5

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MP1541DJ-LF-ZX Application Field and Working PrincipleMP1541DJ-LF-ZX is a highly efficient, low-cost and easy to use DC-DC switching regulator, which belongs to the category of PMIC (Power Management Integrated Circuit) Voltage Regulators and specifically, DC-DC Switching Regulators.MP1541DJ-LF-ZX operates on a simple two-stage topology, which is the combination of an inductor-capacitor based buck and boost stage, with the most popular PWM (Pulse Width Modulation) control. It is a single-channel device, featuring a wide input voltage range of 3V to 16V.MP1541DJ-LF-ZX is specifically designed to provide a regulated DC output voltage between 5V and 16V and at currents up to 100mA, maintaining a high level of efficiency over a wide input voltage range without needing an external power switch. The MP1541DJ-LF-ZX utilizes a high-frequency synchronous buck-boost controller with integrated driver that directly boosts the external sense resistor voltage, resulting in improved line regulation and reduced frequency variation. It also has a wide programmable output voltage range and is capable of providing a regulated output voltage with low noise under a wide input voltage range.The MP1541DJ-LF-ZX is designed for use in a variety of both consumer and industrial applications such as battery charging, power supplies, and other high-performance power electronics. It is also ideal for automotive applications and can be used as a printed circuit board (PCB) or an exposed paddle in low-profile or handheld devices. It has an operating temperature range of -40°C to +125°C, making it suitable for use even in harsh working environments.As for the MP1541DJ-LF-ZX’s working principle, it is based on the same basic principle used in all switching regulators; it switches the input voltage between ground and the desired output voltage at high frequencies to achieve a regulated output voltage. It achieves this by using a pair of transistors, one of which is driven by a Pulse Width Modulated (PWM) signal, which switches the input voltage between the desired output voltage and ground.The regulator also has a built-in control loop, which controls the output voltage by varying the on and off times of the switching transistor in response to the output voltage. This is done by the PWM (or pulse-width modulation) controller taking a feedback voltage from the output of the regulator and comparing it to a reference voltage. If the output voltage is higher than the reference voltage, the PWM controller would decrease the on-time of the transistor and vice-versa.In order to ensure a high level of efficiency, it is important to minimize the excess power that is dissipated as heat. For this reason, the MP1541DJ-LF-ZX has a programmable switching frequency of 0.2MHz – 2MHz, which allows for relatively low losses even during light and medium load conditions.The MP1541DJ-LF-ZX is an excellent choice for high-performance DC-DC power supplies due to its wide input voltage range, high efficiency, low-cost and easy use and is suitable for a variety of applications. Plus, its robust over-temperature protection, over-current protection and under-voltage lockout make it even more suitable for harsher working conditions.

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