LM3503SQX-16/NOPB

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

Power management integrated circuits (PMICs) are commonly used in mobile devices and frequently integrated into smartphones and tablets. They offer several advantages and enable manufacturers to create efficient power control solutions that are space and cost efficient. The LM3503SQX-16/NOPB is one such device, a power management integrated circuit designed for use with single or multi-chip LED lighting solutions. This application note focuses on the device\'s application field and working principle.

The LM3503SQX-16/NOPB belongs to the family of PMICs called LED Drivers. This device is designed to control the flow of current in LED lighting systems. It supports a wide range of input voltage, from 5V to 48V, making it suitable for a multitude of applications. The device can be used for single-chip or multi-chip LED solutions, as well as single- and multi-channel LED lighting systems. It also supports a wide range of operating frequencies, providing system designers with more flexibility when it comes to controlling the LED light output levels.

The LM3503SQX-16/NOPB has several features that make it suitable for LED applications, such as its PWM dimming capability. This capability allows the device to provide dimming control of the LED light source through a PWM signal. The device also includes a slew rate control function, which provides more precise control over the LED light output. In addition, the device supports up to six current sinks, allowing for the implementation of multi-channel LED lighting systems.

The LM3503SQX-16/NOPB works by controlling the flow of current through the LED device. It utilizes a dedicated internal switch to control the current that flows through the LED. The current is regulated by a reference voltage, which is set by the external resistor and a feedback network. The output voltage is then compared to the reference voltage, and the device adjusts the current accordingly.

The device also implements thermal protection circuitry, allowing the device to protect itself from overheating. The device includes an overload protection circuit that is triggered if the current exceeds a predefined level. This protection circuit limits the device\'s current until the temperature of the device decreases, ensuring that the LED light source is kept within safe operating conditions.

The LM3503SQX-16/NOPB also includes a Fault Flag output pin, which triggers when the device reaches an over current or over voltage condition. This feature allows the system to respond quickly to these conditions and react accordingly. Additionally, the device includes an enable pin, which can be used to enable and disable the device as required.

The LM3503SQX-16/NOPB is designed to be used as a power management integrated circuit for LED lighting solutions. It supports a wide range of input voltages and can be used for single or multi-chip LED lighting solutions. The device provides thermal protection circuitry and overload protection, ensuring that the LED device is kept within safe operating parameters. The device also implements a slew rate control function, which provides more precise control over the LED light output, as well as a Fault Flag output pin for quick response to any over current or over voltage conditions. Overall, the device is an ideal choice for LED lighting solutions and helps system designers optimize their power control solutions.

The specific data is subject to PDF, and the above content is for reference