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LED Indication - Discrete

The MV57123E4R0 discrete LED Indicator is a versatile and efficient electronic device, which is designed to provide visual confirmation of electrical signals and alarms. It typically indicates when a procession of data needs to be terminated, or when a digital device that’s monitoring an analog or digital input needs to inform the user.

Application Field

The MV57123E4R0 is most commonly used in industrial, medical, automotive, home automation, and industrial process control applications. It can also be used in accordance with military standards for a variety of military communication interface requirements.

The primary purpose of an LED Indicator is to provide positive visual confirmation that a system is functioning or that something needs to be done. Depending on the application, LED Indicators may be used to report process status, provide individual user feedback, or alert operators of an emergency.

Unlike an LCD or light bulb, which measure a range of luminance values, the MV57123E4R0 is a discrete-output device, which typically indicates a binary (“on” or “off”) state. This makes it well-suited for identifying changes in digital levels, such as for indicating the beginning or end of a process, or signaling an alarm.

Working Principle

The MV57123R4R0 uses a two-stage current-controlled design to control the light intensity of an LED indicator. First, a current reference is established by setting the current Iref to the desired level using an external resistor. This reference is compared with the current in the LED itself by a comparator, and any current above the Iref level will cause the LED to turn on. The current reference is adjustable, which makes it possible to set the desired threshold current at which the LED will turn on.

The second stage of the MV57123R4R0 is the actual LED drive. This is done by a current mirror, where a small current is sampled and amplified, so that a larger current can be supplied to the LED. The output current is regulated by a variable resistor, which makes it possible to adjust the light intensity of the LED. This makes it possible to customize the LED intensity for keypad or display applications.

The MV57123R4R0 is a versatile LED Indicator which is suitable for numerous applications. Its two-stage design allows for precise control over LED intensity, enabling users to adjust the light level for various applications without having to purchase additional components. Additionally, its extremely wide operating temperature range and low power consumption make it ideal for embedded applications with tight thermal and power constraints.

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