RediSem Ltd. Science Park Shatin Hong Kong Tel. +852 2607 4141 Fax. +852 2607 4140 Careers | Contact © Copyright 2017-2021 RediSem Ltd.
RED2542 is an advanced LLC Controller IC for high efficiency low-cost Constant Voltage (CV) LED drivers up to 30W.
Target IC Application: high efficiency low-cost Constant voltage (CV) LED Drivers up to 30W with RediSem’s passive PFC Resonant half-bridge PPFC topology for excellent EMI using robust low-cost bipolar transistors Optimised for optocoupler-based CV applications using secondary sensing 50% duty cycle, variable frequency control of resonant half-bridge +/-5% accurate limiting of output current using primary sensing regulation (PSR) Boost current feature to ensure reliable startup with constant power loads Protection modes: a. Overload output including short-circuit b. No-Load Output c. Over-temperature shutdown Low standby power Small SOT23-6 IC package
Datasheet  
Key Features
Order Details
Code RED2542AL-TR7 SOT23-6 package on 7” tape & reel
•	RED2542 30W CV 12V 2.5A (1035kB) •	RED2542 30W CV 12V 2.5A (1035kB) Reference Design  Check Application Notes Check Application Notes Order Order LLC Controller for CV LED Drivers RED2542
•	RED2542AL Rev01 Production (337kB)   •	RED2542AL Rev01 Production (337kB)         LED Driver ICs •	RED2542 30W CV 24V 1.25A (937kB) •	RED2542 30W CV 24V 1.25A (937kB)
RediSem Ltd. Science Park Shatin Hong Kong Tel. +852 2607 4141 Fax. +852 2607 4140 Careers | Contact © Copyright 2017-2020 RediSem Ltd.
LLC Controller for CV LED Drivers RED2542
RED2542 is an advanced LLC Controller IC for high efficiency low- cost Constant Voltage (CV) LED drivers up to 30W.
Target IC Application: high efficiency low-cost Constant voltage (CV) LED Drivers up to 30W with RediSem’s passive PFC Resonant half-bridge PPFC topology for excellent EMI using robust low-cost bipolar transistors Optimised for optocoupler-based CV applications using secondary sensing 50% duty cycle, variable frequency control of resonant half-bridge +/-5% accurate limiting of output current using primary sensing regulation (PSR) Boost current feature to ensure reliable startup with constant power loads Protection modes: a. Overload output including short-circuit b. No-Load Output c. Over-temperature shutdown Low standby power Small SOT23-6 IC package
Key Features
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