SSL4101/1,518 Integrated Circuits (ICs)

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PMIC - LED Drivers is a type of electric power conversion device that facilitates the functioning of the circuit by efficiently controlling light-emitting diodes or LEDs. The driver increases the efficiency and power of the LED’s light output by converting energy from a source like an electrical outlet or a solar panel into the form necessary for an LED. This kind of power conversion device is commonly found in many lighting applications and devices; however, the SSL4101/1,518 application field and working principle has gained wide interest due to its capabilities of providing reliable and efficient performance.

The SSL4101/1,518 is a mid-voltage LED driver that accepts input voltages of as low as 17V DC to as high as 18V DC. With over-voltage protection, short-circuit protection, and thermal protection, this driver provides a stable and reliable connection for up to 1,518 LEDs. It is designed with an active- PFC design, making it highly efficient when used with constant power outputs, and provides a constant LED current output with a wide LED dimming range. With its compact size, external dimming and eight LED strings, this driver is perfect for a variety of applications, such as general lighting, display lighting, industrial lighting, medical illumination, and automotive dimming.

The core principle of the SSL4101/1,518 driver is based on the use of current feedback control loops. By using feedback from the sensed load current or the current through the LEDs, the driver adjusts the input voltage to accurately regulate the power supplied to the LEDs. This current feedback control loop effectively stabilizes the output voltage, providing a consistent voltage output to the LEDs, even when the input voltage changes. In turn, this ensures efficient operation of the LEDs, providing maximum light output and efficient energy use.

In addition, the SSL4101/1,518 drivers come with an advanced dimming control feature. When connected to an external dimmer, the dimming control can be adjusted, allowing for a range of light output levels. This feature is useful for applications that require different levels of light such as dimable wall-washing, accent lighting, and illumination for artwork. The dimming control also allows for flexible operation, allowing the user to customize the amount of light output for different tasks and ambiences.

The SSL4101/1,518 driver is also designed with a thermal protection feature which prevents the driver from overheating. The driver will automatically reduce the output voltage when the ambient temperature reaches a certain threshold, thereby protecting the LEDs and increasing their lifespan. In addition, this driver also supports wide temperature range operation, allowing for more robust performance in various temperature conditions.

The SSL4101/1,518 is an ideal LED driver for use in numerous applications. Its current feedback control loops ensure stable and accurate LED current, while its dimming control feature makes it perfect for lighting installations that require adjustable light output. Additionally, its thermal protection feature helps protect the LEDs from overheating, while its wide temperature range operation ensures robust performance in many conditions. Altogether, the SSL4101/1,518 provides all the features needed for professional lighting applications, making it an excellent choice for use in PMIC - LED drivers.

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