MP1587EN-LF-Z

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The MP1587EN-LF-Z is a monolithic DC/DC step-down/converter, which is designed to provide a very small and efficient solution. This device belongs in the family of DC-DC switching regulators, which make up the bulk of the Power Management Integrated Circuit (PMIC) market. It offers a unique combination of features to maximize performance and reliability for its target applications.

This device is intended for consumer, automotive and industrial applications such as DVD players, portable appliances and point-of-sale systems. Its low output voltage and current ratings ensures that the MP1587EN-LF-Z is suitable for battery powered applications where power consumption and efficiency are paramount. It can also be used to convert higher voltage inputs to a low voltage output.

The MP1587EN-LF-Z utilizes a step-down/buck converter in its power architecture. Using the principle of Pulse Width Modulation (PWM), the device smoothly reduces the input voltage to a lower fixed output voltage. This is done by quickly de-energizing the power transistor switch, a process called switching, and then slowly recharging the output capacitor. This allows the output voltage to be precisely regulated by varying the amount of time that the switch is on. This switching is repeated cyclically and it precludes the need for any linear regulators.

The MP1587EN-LF-Z utilizes a synchronous rectified buck converter which ensures high efficiency and low warm up times. The use of synchronous rectification further improves efficiency and helps reduce power losses due to switching. The device is also designed to operate in continuous current mode, meaning that it does not require a minimum load for proper functioning and can maintain a constant output voltage even at no load conditions.

The MP1587EN-LF-Z also has a wide range of output current ratings, from 0.25A to 4.0A. Its low-dropout characteristics also make it ideal for low power applications, where input voltage levels may be significantly lower than the desired output voltage. Its high power capabilities make it suitable for RS-232 type applications and it is designed to perform a maximum input voltage of 30V and an operating temperature range of -40°C to 125°C.

In terms of protection features, the MP1587EN-LF-Z offers over-voltage and over-current protection. It also incorporates a shutdown function and has short-circuit protection. This device is also designed to be radiation resistant, making it suitable for space applications.

The MP1587EN-LF-Z is a highly efficient and comprehensive switching regulator, which is capable of delivering power efficiently to a wide range of applications. Its small size and low-dropout characteristics make it particularly suitable for battery-powered applications, while its high power and radiation resistance give it an edge in more demanding applications.

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