LM3502SQ-16

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The LM3502SQ-16 is a popular member from the Super Flash LED family of intelligent high-brightness LED drivers, produced by Texas Instruments. This type of integrated circuit (IC) is designed to control and manage the operation of LEDs, allowing for adjustable current settings and power saving features, ideal for a wide range of LED applications. The LM3502SQ-16 is suitable for use in backlight displays, LED panel lighting and LED strips, amongst other LED applications.The LM3502SQ-16 is an integrated, PMIC (power management IC) LED driver that is capable of driving up to 16 LEDs in series. It is a 12-bit, I2C-controlled flash LED driver which supports up to 10W of LED power with a wide dimming range of 1 – 1000 Hz. It also includes Power-Save (PS) Mode, reducing its power consumption when less LED brightness is needed, supporting efficient operation and reducing power-related costs. The LM3502SQ-16 is also designed with LED open detection (LOD) and LED short-circuit protection (SCP) features, to protect from damage that could be caused by faulty or mismatched LED connections. As a result of its features, this type of LED driver is suitable for use in industrial and commercial lighting solutions, as well as appliances and home electronics.In terms of its working principle, the LM3502SQ-16 combines an efficient on-board DC-DC converter with an integrated PWM (pulse-width modulator) controller. It is designed to detect the open- or short-circuit status at the output and can be programmed to output any level of brightness across its range of 10 bits. The output current is digital and adjustable, making it suitable for controlling individual LEDs or LEDs which have been wired in parallel. Furthermore, the LM3502SQ-16 includes a number of integrated protection features, including line undervoltage (UVP) and overcurrent (OCP) protection, to protect the integrated circuit and the LEDs from damage due to short-term power interruptions and other abnormal operation scenarios. It is also designed to detect and protect against accidental short-circuiting caused by mismatched LEDs or missing wire connections.Overall, the combination of features from the LM3502SQ-16 make it suitable for use in a wide range of LED applications and environments, allowing designers to create robust and reliable lighting solutions. With advanced features such as LOD and SCP protection, support for 10W of LED power and a wide dimming range of 1 – 1000 Hz, it is an ideal choice for a wide range of LED lighting projects.

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