LM3503SQ-25/NOPB

LED drivers are available with a wide variety of features, providing a wide range of performance, including increased efficiency, increased light quality, and higher peak current capabilities. The LM3503SQ-25/NOPB is a unique high-efficiency, single-channel, high-density LED driver with integrated LED current sensing. It is designed to be implemented as a constant-current LED driver in high-temperature, thermally-sensitive application fields such as automotive, medical, and industrial lighting.

Features of LM3503SQ-25/NOPB

• High-efficiency with minimal component count
• Wide input voltage range from 4.5 V to 55 V
• High-Current range from 8 A to 25 A
• Over-Temperature protection (OTP)
• ESD protection for all pins
• PWM dimming capability
• High-density LED current sensing

Application Field

The LM3503SQ-25/NOPB is suitable for a variety of application fields, including automotive, industrial, medical and general lighting. It is especially suitable for high-temperature, thermally-sensitive applications, where its high-efficiency and low component count reduces power losses and enables more accurate thermal management. The LM3503SQ-25/NOPB also provides high-density current sense protection and an integrated over-temperature protection that could reduce system downtime and maintenance costs.

Working Principle

The LM3503SQ-25/NOPB operates by controlling the current of the LED from a wide input voltage range of 4.5 V to 55 V. The integrated current sense circuit allows for precise, high-density current control. The device also features a PWM dimming capability and an Over-Temperature Protection (OTP) function to ensure the LED is not overdriven beyond the acceptable temperature range, which could result in improper operation and reduced life. The LM3503SQ-25/NOPB also has an integrated low-noise, low-ripple current source that simplifies the task of driving different types of LEDs.

The LM3503SQ-25/NOPB is designed for single LED output applications. It offers high-efficiency with minimal components count, for energy saving and cost optimization. The device also features low-EMI and fast transient response for improved performance and reliability. The device’s integrated current sensing and PWM dimming functions provide the user with the flexibility to control the lighting conditions in the application field. Finally, the LM3503SQ-25/NOPB can be used in high-temperature, thermally-sensitive application fields, as its high-efficiency and low component count reduce power losses and enable more accurate thermal management.