Preliminary Data Sheet R2A20135SP R03DS0061EJ0301 Rev.3.01 LED Lighting Power Controller Jan 08, 2016 Description R2A20135 is LED lighting controller IC with dimming function. High accuracy LED current feed-back system makes more efficient LED performance. With non-Isolation step-down control makes it possible to reduce external parts and realize high power factor and efficiency. Moreover, this IC builds in the dimming function and can control many types dimming mode such as Triac, PWM, and DC dimming. Switching mode can chosen Zero Current detect Mode or Fixed Frequency Mode according to the required features. By the Constant On Time control, both modes have power factor correct function. Zero Current detect Mode is better performance for noise immunity, and Fixed Frequency Mode is for power factor correction and THD. Features Absolute Maximum Ratings Supply voltage Vcc: 24 V Junction temperature Tj: 40 to +150C Electrical characteristics UVLO operating start voltage VH: 12 V 0.8 V UVLO operating shutdown voltage VL: 9.2 V 0.7 V UVLO hysteresis voltage Hysuvl: 2.8 V 0.7 V Functions Dimming function (Triac, PWM, DC dimming) Zero current detection mode (when Rrt is OPEN) Fixed frequency mode (when Rrt is connected by GND) Adjustable switching frequency (when Rrt is connected by GND) Package lineup: Pb-free SOP-8 (JEDEC) Ordering Information Package Taping Abbreviation Part No. Package Name Package Code Abbreviation (Quantity) R2A20135SP W5 PRSP0008DJ-A SP W (2,500 pcs/reel) R03DS0061EJ0301 Rev.3.01 Page 1 of 11 Jan 08, 2016 R2A20135SP Preliminary Pin Arrangement FB 1 8 VCC COMP 2 7 OUT RT 3 6 GND FB+ 4 5 PWM (Top view) Pin Function Pin No. Pin Name Input/Output Function 1 FB Input Error amplifier input pin 2 COMP Output Error amplifier output pin 3 RT Input/Output A resistor connection pin for RAMP current setting 4 FB+ Input/Output A conductor connection pin for PWM voltage stability and DC dimming 5 PWM Input Input PWM signal 6 GND Ground 7 OUT Output Power MOSFET drive pin 8 VCC Input Supply voltage pin R03DS0061EJ0301 Rev.3.01 Page 2 of 11 Jan 08, 2016