LM3503SQX-16

The LM3503SQX-16 is a state-of-the-art pulse-width modulation current source designed to drive high-power LED strings. It combines LED inductorless current regulation and an N-channel MOSFET driver stage to provide an efficient solution for LED lighting applications. This LED driver IC is ideal for applications that require high precision, low ripple, and an extremely accurate LED current.

The LM3503SQX-16 is part of the PMIC - LED Drivers family. It is designed for a wide range of LED lighting applications including LED drivers for automotive headlights, LED drivers for LED strip lighting, LED drivers for LED drivers for signs and displays, and LED drivers for general purpose LED lighting applications. As an LED driver, the LM3503SQX-16 provides an accurate and constant LED current regulation that is adjustable with a resistor. Its integrated MOSFET driver stage effectively drives up to two N-channel MOSFETs that can handle up to 30V and features adjustable turn-on and turn-off voltage thresholds to optimize efficiency. The LM3503SQX-16 can drive up to 16A of LED current and the device can be configured to operate in constant current or constant voltage mode to seamlessly adapt to different requirements.

The LM3503SQX-16 works by controlling the duty cycle of the pulse-width modulation (PWM) signal. The control input voltage is compared to a reference voltage which determines the duty cycle of the PWM signal output. This PWM signal is then used to control a switch like a power transistor, which in turn will control the current through the LEDs. The output current is determined by the current setting resistor, which is adjusted to provide the required current level for the LEDs.

The LM3503SQX-16 is a highly efficient and reliable LED driver IC. With its adjustable current range, integrated MOSFET driver stage, and high current capability, the LM3503SQX-16 is ideal for a wide range of LED lighting applications. Its combination of features make it suitable for applications that require extremely accurate LED lighting control and efficiency.