LC5225S

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PMIC - LED Drivers can be described as integrated circuits, which deliver power and protection for a variety of light-emitting diode (LED) based lighting applications. Frequently these ICs are referred to as LED drivers, which are the interface between the power source and the LEDs themselves. Among the many products available, the LC5225S product from Fairchild Semiconductor is particularly suited for automotive lighting; due to its level of integration and its temperature ratings.

The LC5225S features a 3 channel LED driver PWM LED dimming controller with dimming frequency synchronization. It has two output configuration options: duo-cop and multi-cop. The duo-cop option enables the two channels to be connected in parallel, that is, in an “AND” configuration. The multi-cop option allows for up to five channels to be connected in an “OR” configuration, allowing for a wide variety of illumination control possibilities. Its end-to-end current accuracy of 1% enables smooth, uniform dimming control.

The IC also features switching frequencies up to 400 kHz for efficient power utilization, an adjustable operating current from 10mA to 80mA, under-voltage lockout protection, output disconnector, spread spectrum dimming, and an adjustable dimming dead-time. This makes the LC5225S well suited to a variety of automotive lighting applications such as parking lamps, fog lamps, turn signals and brake lights.

The LC5225S can provide power and protection for a variety of LED based lighting applications through its innovative features. Its 3 channel design, flexible output configuration options, wide operating temperature and current range and efficient power utilization make this IC an ideal solution for automotive lighting applications. In addition, its other features such as under-voltage protection, output disconnect and spread spectrum dimming make it a great choice for many other applications.

The working principle of the LC5225S is based around its switching frequency up to 400 kHz and dimming frequency synchronization. The IC is configured to use a Pulse Width Modulation (PWM) technique to control the brightness of the LEDs. By setting a frequency from 1kHz to 400kHz and the Pulse Width Modulation (PWM) duty cycle, it is possible to accurately adjust the LED current of each channel from 10mA to 80mA. The outputs of the LC5225S can be connected to the LEDs in several combinations, depending on the specific application and the illumination requirements for each LED.

The LC5225S is able to control the light output of the LEDs by pulse width modulation which employs short pulses of current to rapidly and accurately adjust the LED current. This feature, along with its robust feature set, makes the LC5225S an ideal solution for a wide variety of LED applications in automotive, automotive interior, and general lighting markets.

The LC5225S is an ideal solution for a variety of LED based lighting applications. Its level of integration enables it to provide power and protection for several different LEDs, depending on the application and illumination requirements for each LED. Its adjustable operating current, under-voltage protection, and output disconnect features make it well suited for automotive and general lighting applications. Furthermore, its innovative features and efficient working principle make it an ideal solution for many light-emitting diode based lighting applications.

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