IRS21541CD

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The IRS21541CD is a very powerful PMIC – LED Drivers, as its unique features and design make it uniquely placed in the world of integrated circuit electronics. In this article, we will discuss the application field and working principle of the IRS21541CD.

The IRS21541CD is a Single-Channel LED driver suitable for operation up to 600V / 3A. For applications up to 20W, the IRS21541CD is a very efficient LED driver. It has an adjustable current limit and is suitable for driving either a single LED or two LEDs in series. The device supports a wide range of drive currents, from 5mA - 3A. The device is also capable of operating at non-linear luminance levels and supports a programmable pwm control. The IRS21541CD has an integrated over-voltage protection circuit and over-temperature protection.

The application field of the IRS21541CD allows it to be used in a wide range of LED applications, such as general lighting, automotive lighting, and LED backlighting, as well as LED signage displays, both indoor and outdoor. Because of its high power and robustness, the IRS21541CD can be used for applications where high light output is required and where robustness is essential.

The working principle of the IRS21541CD is based on the current-mode control scheme. The IRS21541CD uses an external sense resistor and compares the actual current through the coil with a given setpoint. If the real current exceeds the setpoint, the IRS21541CD reduces the pulse width modulated signal to the coil. If the actual current is lower than the setpoint, the IRS21541CD increases the pulse width modulated signal to the coil to increase the current.

The IRS21541CD is also equipped with various safety features. The device has two separate enable pins, one for the boost regulator and one for the LED driver. This allows the user to control the status of each section independently. The protection features are mostly based on over-temperature and over-current protection. In case of over-temperature, the device limits the output power by reducing the voltage. In case of over-current the device limits the current.

To summarize, the IRS21541CD is a powerful and efficient PMIC – LED Drivers, with a wide range of applications. It has an adjustable current limit and is suitable for driving either a single LED or two LEDs in series. The device supports a wide range of drive currents, from 5mA - 3A. The device is also capable of operating at non-linear luminance levels and supports a programmable pwm control. It also has an integrated over-voltage protection circuit and over-temperature protection and various safety features.

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