MCP1825S-0802E/AB

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PMIC (Power Management IC) generally refers to integrated circuit technology used for the control and management of the electrical and electronic systems through the uninterrupted power supply. PMIC are used in various applications such as computers and micro controllers, I/O devices, audio and video, dimming backlight, automotive and many other applications, where efficient, accurate and reliable performance of electrical/electronic systems is important but also challenge. In this context, the MCP1825S-0802E/AB application field and working principle, belong to the PMIC - Voltage Regulators - Linear category.

The MCP1825S-0802E/AB, is an ultra-low-power, micro-power, low-dropout, positive voltage regulator. It enables high quality power supply with lowest power consumption in battery powered devices and portable equipment. Its unique combination of low quiescent current, high precision (1.2%) adjustable output voltage and small size, gives it wide range of application. Its performance also makes it suitable for industrial, automotive and medical purposes too.

The MCP1825S-0802E/AB pulls only 0.1µA quiescent current, helping it to maintain its functionality with minimum effect on battery lifetime. This superior performance along with its wide input voltage range (1.8V to11V) makes it an ideal power supply for microcontrollers and similar low voltage, low power devices.

The device features an adjustable output voltage, set through an external resistor divider. It has a 1.2% maximum output voltage accuracy that ensures high accuracy and no need of additional voltage trimming. The maximum output current is up to 250mA while the dropout voltage is 200mV at the specified maximum output current.

The MCP1825S-0802E/AB device\'s internal current limit and thermal shutdown protection ensure that it is fully resistant to overloads. A soft-start feature in the device provides controlled inrush current, greatly reducing the number of components needed in the power supply section.

The device is offered in a space saving, tiny 8-Pin Extended Small-Outline Integrated Circuit (ESOP-8) package. It is ESD-protected and is specified for the temperature ranges of -40°C to +125°C

In its application field, MCP1825S-0802E/AB voltage regulator is mainly used to regulate the voltage from the main power supply of a system. It can also be used in a variety of other applications such as cell phone chargers, battery operated devices, portable audio systems, and laptop computers.

The working principle of the MCP1825S-0802E/AB voltage regulator is very simple. It employs a positive voltage regulator circuit in which the output voltage is regulated by an external resistor divider that is connected to the reference voltage input of the regulator. The operation of the voltage regulator is based on the comparison of the reference voltage with the output voltage measured by an internal voltmeter. When the output voltage falls below the reference voltage, the internal circuitry adjusts the output to the desired level.

The MCP1825S-0802E/AB voltage regulator is a highly efficient and convenient solution for low voltages applications where size and efficiency are important parameters. Its advantages, such as its ultra-low quiescent current and high accuracy, make it an ideal choice for battery operated devices and portable systems.

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