RediSem Ltd. Science Park Shatin Hong Kong Tel. +852 2607 4141 Fax. +852 2607 4140 Careers | Contact © Copyright 2017-2021 RediSem Ltd.
RED2543 is an advanced LLC Controller IC for high efficiency low-cost Constant Voltage (CV) LED drivers up to 250W.
Target IC Application: o Low-cost passive PFC CV LED drivers up to 80W o High power active PFC CV LED drivers up to 250W Resonant half-bridge 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 RED2543AL-TR7 SOT23-6 package on 7” tape & reel
•	RED2543 60W CV 24V 2.5A (984kB) •	RED2543 60W CV 24V 2.5A (984kB) Reference Design  Check Application Notes Check Application Notes Order Order LLC Controller for CV LED Drivers RED2543
•	RED2543AL Rev01 Production (338kB)   •	RED2543AL Rev01 Production (338kB)         LED Driver ICs •	RED2543 120W CV 24V 5A APFC (1128kB) •	RED2543 120W CV 24V 5A APFC (1128kB)
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 RED2543
RED2543 is an advanced LLC Controller IC for high efficiency low- cost Constant Voltage (CV) LED drivers up to 250W.
Target IC Application: o Low-cost passive PFC CV LED drivers up to 80W o High power active PFC CV LED drivers up to 250W Resonant half-bridge 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 ensures 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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