LM3503SQ-16/NOPB

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The LM3503SQ-16/NOPB application field and working principle is related to PMIC - LED Drivers. It is an integrated circuit (IC) designed for use as a linear current, constant current, on/off and dimming switch for lighting applications, primarily in the automotive industry. This device is ideal for direct driving high-power, high-brightness light-emitting diodes (LEDs). The LM3503SQ-16/NOPB is integrated circuit specifically designed to provide a complete, high brightness LED Driver, control and protection solution. It is capable of driving multiple strings of 1 to 16 LEDs in constant-current and ground-referenced current-controlled PWM dimming modes.This device is completely programmable and features the ability to modulate a variety of LED operating parameters including, but not limited to, the LED string’s current, peak voltage and various protection features set by external capacitors and resistors. The peak LED current can be seamlessly adjusted from 4 to 160 mA with minimum external components, allowing for additional flexibility and control over the LED light output from a single driver. Furthermore, the LM3503SQ-16/NOPB is designed to provide a comprehensive protection and diagnostic feature set for any LED application. This includes an adjustable low and high over-temperature protection (OTP), adjustable short-circuit current limit protection, adjustable LED open and short circuit protection, under-voltage protection (UVP) and LED open or short protection.The LM3503SQ-16/NOPB operates from 6V to 28V supply rails, making it suitable for various automotive and industrial power systems. It also features an I/O slew rate control, adjustable switching frequency and optimized dead time control. This eliminates the need for external components and provides complete on-board functionality. The LM3503SQ-16/NOPB has a wide temperature range operating from -40 to 125°C allowing it to be used in extreme environments. Furthermore, it features a variety of features that enhance its durability including an adjustable soft start frequency and an integrated overtemperature monitor (OTM).Overall, the device is perfectly suited for low-power, automotive and industrial lighting applications. It is highly optimized for providing a complete, programmable, high- brightness LED driver solution. The LM3503SQ-16/NOPB’s wide operating range, low power dissipation and high efficiency make it ideal for applications where small size, low power consumption and ruggedness are required.

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