The R2A20135SP from Renesas is an LED Lighting Power Controller IC. It requires an input voltage of up to 24 V and provides an output voltage of 10 V. This IC features a high-accuracy LED current feedback system, thereby enhancing LED performance. It supports non-isolation step-down control, which reduces the need for external parts while maintaining a high power factor and efficiency. This IC supports triac, pulse width modulation (PWM), and DC dimming and allows switching between zero-current detection mode and fixed frequency mode to meet specific requirements. It utilizes Zero current detect mode for high noise immunity and fixed frequency mode for power factor correction and total harmonic distortion (THD). This IC is available in a surface-mount package that measures 4.98 x 6.20 mm.