NCP5623MUTBG

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PMIC - LED Drivers can be found in a wide range of lighting applications today, including streetlights, desk lamps, automotive headlights and interior lighting. The NCP5623MUTBG is a dimmable LED driver IC specifically designed by ON Semiconductor to address the demanding requirements of these illumination applications. This article presents an overview of the NCP5623MUTBG application field and working principle.

NCP5623MUTBG Application Field

The NCP5623MUTBG is a versatile LED driver IC that supports a variety of lighting applications, includin streets lights, kick-lights, backlights, ambulance lights and interior lighting. The integrated oscillator and dimming functions allow for precise control of the LED brightness, and the high resolution enable up to 8 bit dimming for complex lighting requirements. The IC also features a black LED regulation circuit that can compensate ambient light, providing a uniform LED brightness regardless of the environment. The NCP5623MUTBG can be used with numerous dimming interfaces, including Analog, 1 to 10V PWM, and I2C. In addition, the IC is equipped with numerous safety and protection features, such as short-circuit protection and open-circuit protection, which help ensure reliable operation and system integrity.

NCP5623MUTBG Working Principle

The NCP5623MUTBG is a buck-boost IC that operates in constant voltage and current modes to deliver a high level of accuracy in controlling the LED current and brightness. The driver uses a two-phase interleaved PWM dimming technique to provide stable transitions between brightness levels, resulting in a smooth and flicker-free output. The IC is designed to provide a programmable dimming control, which allows the user to adjust the LED brightness through a range of 0 to 30 mA. The IC also features a Thermal Regulation Control (TRC) that automatically adjusts the output voltage according to the temperature changes in the LED, providing improved system reliability.

The NCP5623MUTBG driver also incorporates a crystal oscillator to provide a stable clock source for dimming signal generation. The clock frequency is programmable, ranging from 1 kHz to 50 kHz, and can be adjusted through a resistor-divider network. The IC also features a configurable undervoltage lockout (UVLO) function, which protects the IC from external voltage spikes and enables a safe operation.

Conclusion

The NCP5623MUTBG is a highly integrated LED driver IC specifically designed for lighting applications that require precise dimming control and stable LED performance. The IC incorporates numerous safety and protection features to ensure reliable operation, as well as a programmable oscillator and high-resolution dimming for complex lighting requirements. This article has given an overview of the application field and working principle of the NCP5623MUTBG, with a focus on its features that make it suitable for illumination applications.

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