RediSem Ltd. Science Park Shatin Hong Kong Tel. +852 2607 4141 Fax. +852 2607 4140 Careers | Contact © Copyright 2017-2023 RediSem Ltd.
RediSem LED LLC converter deliver best-in-class efficiency, accurate primary side regulation of output voltage and current and full protection (incl. SELV).
Our LED Driver IC Products
RediSem LLC LED drivers have higher efficiency than flyback converters. Resonant converter operation minimizes losses resulting in lower component temperatures and smaller cases. All our designs have efficiencies exceeding 90%.
High Efficiency
High PF Low Ripple
Cost Effectiveness
Simple Design
RediSem’s patented PPFC delivers excellent Power Factor Correction in a single stage LLC converter while offering accurate DC output with ripple well below 1% - resulting in no LED flicker.
RediSem LLC LED drivers offer the performance of a 2-stage converter at the price point of a 1-stage unit. Our LLC converters use low-cost robust bipolar transistors and smaller magnetics and EMI filtering than flyback systems.
RediSem has complete application designs and demonstrator units available for all its ICs. These production-ready LED driver designs come with full design infopacks and can be easily customized and optimized.
Product Documents Product Documents Contact Us Contact Us High Efficiency - No Flicker LED Driver ICs IC
IC ref
Package
Application
IC RED2402 LLC controller IC for CC LED drivers with passive PFC up to 40W, fixed high operating frequency SOT23-6 RED2402 LLC controller IC for CC LED drivers with passive PFC up to 40W, fixed high operating frequency SOT23-6 RED2402 LLC controller IC for CC LED drivers with passive PFC up to 40W, fixed high operating frequency SOT23-6 RED2401 LLC controller IC for CC LED drivers with passive PFC up to 22W SOT23-6 RED2401 LLC controller IC for CC LED drivers with passive PFC up to 22W SOT23-6 RED2401 LLC controller IC for CC LED drivers with passive PFC up to 22W SOT23-6 RED2422 Ultra low-flicker version of RED2402 SOT23-6 RED2422 Ultra low-flicker version of RED2402 SOT23-6 RED2422 Ultra low-flicker version of RED2402 SOT23-6 RED2501 LLC controller IC for CC LED drivers with passive PFC up to 45W SO8 RED2501 LLC controller IC for CC LED drivers with passive PFC up to 45W SO8 RED2501 LLC controller IC for CC LED drivers with passive PFC up to 45W SO8 RED2511 LLC controller IC for CC LED drivers with passive PFC up to 100W SO8 RED2511 LLC controller IC for CC LED drivers with passive PFC up to 100W SO8 RED2511 LLC controller IC for CC LED drivers with passive PFC up to 100W SO8 RED2521 Ultra low-flicker version of RED2511 SO8 RED2521 Ultra low-flicker version of RED2511 SO8 RED2521 Ultra low-flicker version of RED2511 SO8 RED2541 LLC controller IC for CV LED drivers with active or passive PFC up to 300W SO8 RED2541 LLC controller IC for CV LED drivers with active or passive PFC up to 300W SO8 RED2541 LLC controller IC for CV LED drivers with active or passive PFC up to 300W SO8 RED2601 LLC controller IC for CC LED drivers with active PFC up to 300W SO8 RED2601 LLC controller IC for CC LED drivers with active PFC up to 300W SO8 RED2601 LLC controller IC for CC LED drivers with active PFC up to 300W SO8 RED2821 LLC controller IC for dimmable CC LED drivers with active or passive PFC up to 300W SO8 RED2821 LLC controller IC for dimmable CC LED drivers with active or passive PFC up to 300W SO8 RED2821 LLC controller IC for dimmable CC LED drivers with active or passive PFC up to 300W SO8 RED2421 Low Power LED Controller for LLC converters SOT23-6 RED2421 Low Power LED Controller for LLC converters SOT23-6 RED2421 Low Power LED Controller for LLC converters SOT23-6 RED2432 Zero-Flicker LED-Driver IC SOT23-6 RED2432 Zero-Flicker LED-Driver IC SOT23-6 RED2432 Zero-Flicker LED-Driver IC SOT23-6 RED2431 Zero-Flicker LED-Driver IC SOT23-6 RED2431 Zero-Flicker LED-Driver IC SOT23-6 RED2431 Zero-Flicker LED-Driver IC SOT23-6 RED2433 Zero-Flicker LED-Driver IC SOT23-6 RED2433 Zero-Flicker LED-Driver IC SOT23-6 RED2433 Zero-Flicker LED-Driver IC SOT23-6 RED2542 LLC controller IC for CV LED drivers up to 30W SOT23-6 RED2542 LLC controller IC for CV LED drivers up to 30W SOT23-6
NEW
RED2542 LLC controller IC for CV LED drivers up to 30W SOT23-6
NEW
RED2543 LLC controller IC for CV LED drivers up to 250W SOT23-6 RED2543 LLC controller IC for CV LED drivers up to 250W SOT23-6
NEW
RED2543 LLC controller IC for CV LED drivers up to 250W SOT23-6
NEW
RED2822 Resonant controller IC for dimmable CC LED drivers up to 250W SO8 RED2822 Resonant controller IC for dimmable CC LED drivers up to 250W SO8
NEW
RED2822 Resonant controller IC for dimmable CC LED drivers up to 250W SO8
NEW
NEW
NEW
NEW
RED2832 Resonant controller IC for dimmable CC LED drivers up to 250W SO8 RED2832 Resonant controller IC for dimmable CC LED drivers up to 250W SO8
NEW
RED2832 Resonant controller IC for dimmable CC LED drivers up to 250W SO8
NEW
NEW
RED2402 LLC controller IC for CC LED drivers with passive PFC up to 40W, fixed high operating frequency SOT23-6 RED2402 LLC controller IC for CC LED drivers with passive PFC up to 40W, fixed high operating frequency SOT23-6 RED2402 LLC controller IC for CC LED drivers with passive PFC up to 40W, fixed high operating frequency SOT23-6 RED2401 LLC controller IC for CC LED drivers with passive PFC up to 22W SOT23-6 RED2401 LLC controller IC for CC LED drivers with passive PFC up to 22W SOT23-6 RED2401 LLC controller IC for CC LED drivers with passive PFC up to 22W SOT23-6 RED2422 Ultra low-flicker version of RED2402 SOT23-6 RED2422 Ultra low-flicker version of RED2402 SOT23-6 RED2422 Ultra low-flicker version of RED2402 SOT23-6 RED2501 LLC controller IC for CC LED drivers with passive PFC up to 45W SO8 RED2501 LLC controller IC for CC LED drivers with passive PFC up to 45W SO8 RED2501 LLC controller IC for CC LED drivers with passive PFC up to 45W SO8 RED2511 LLC controller IC for CC LED drivers with passive PFC up to 100W SO8 RED2511 LLC controller IC for CC LED drivers with passive PFC up to 100W SO8 RED2511 LLC controller IC for CC LED drivers with passive PFC up to 100W SO8 RED2521 Ultra low-flicker version of RED2511 SO8 RED2521 Ultra low-flicker version of RED2511 SO8 RED2521 Ultra low-flicker version of RED2511 SO8 RED2541 LLC controller IC for CV LED drivers with active or passive PFC up to 300W SO8 RED2541 LLC controller IC for CV LED drivers with active or passive PFC up to 300W SO8 RED2541 LLC controller IC for CV LED drivers with active or passive PFC up to 300W SO8 RED2601 LLC controller IC for CC LED drivers with active PFC up to 300W SO8 RED2601 LLC controller IC for CC LED drivers with active PFC up to 300W SO8 RED2601 LLC controller IC for CC LED drivers with active PFC up to 300W SO8 RED2821 LLC controller IC for dimmable CC LED drivers with active or passive PFC up to 300W SO8 RED2821 LLC controller IC for dimmable CC LED drivers with active or passive PFC up to 300W SO8 RED2821 LLC controller IC for dimmable CC LED drivers with active or passive PFC up to 300W SO8 RED2421 Low Power LED Controller for LLC converters SOT23-6 RED2421 Low Power LED Controller for LLC converters SOT23-6 RED2421 Low Power LED Controller for LLC converters SOT23-6 RED2432 Zero-Flicker LED-Driver IC SOT23-6 RED2432 Zero-Flicker LED-Driver IC SOT23-6 RED2432 Zero-Flicker LED-Driver IC SOT23-6 RED2431 Zero-Flicker LED-Driver IC SOT23-6 RED2431 Zero-Flicker LED-Driver IC SOT23-6 RED2431 Zero-Flicker LED-Driver IC SOT23-6 RED2433 Zero-Flicker LED-Driver IC SOT23-6 RED2433 Zero-Flicker LED-Driver IC SOT23-6 RED2433 Zero-Flicker LED-Driver IC SOT23-6 RED2542 LLC controller IC for CV LED drivers up to 30W SOT23-6 RED2542 LLC controller IC for CV LED drivers up to 30W SOT23-6
NEW
RED2542 LLC controller IC for CV LED drivers up to 30W SOT23-6
NEW
RED2543 LLC controller IC for CV LED drivers up to 250W SOT23-6 RED2543 LLC controller IC for CV LED drivers up to 250W SOT23-6
NEW
RED2543 LLC controller IC for CV LED drivers up to 250W SOT23-6
NEW
RED2822 Resonant controller IC for dimmable CC LED drivers up to 250W SO8 RED2822 Resonant controller IC for dimmable CC LED drivers up to 250W SO8
NEW
RED2822 Resonant controller IC for dimmable CC LED drivers up to 250W SO8
NEW
NEW
NEW
NEW
RED2832 Resonant controller IC for dimmable CC LED drivers up to 250W SO8 RED2832 Resonant controller IC for dimmable CC LED drivers up to 250W SO8
NEW
RED2832 Resonant controller IC for dimmable CC LED drivers up to 250W SO8
NEW
NEW
RED2402 LLC controller IC for CC LED drivers with passive PFC up to 40W, fixed high operating frequency SOT23-6 RED2402 LLC controller IC for CC LED drivers with passive PFC up to 40W, fixed high operating frequency SOT23-6 RED2402 LLC controller IC for CC LED drivers with passive PFC up to 40W, fixed high operating frequency SOT23-6 RED2401 LLC controller IC for CC LED drivers with passive PFC up to 22W SOT23-6 RED2401 LLC controller IC for CC LED drivers with passive PFC up to 22W SOT23-6 RED2401 LLC controller IC for CC LED drivers with passive PFC up to 22W SOT23-6 RED2422 Ultra low-flicker version of RED2402 SOT23-6 RED2422 Ultra low-flicker version of RED2402 SOT23-6 RED2422 Ultra low-flicker version of RED2402 SOT23-6 RED2501 LLC controller IC for CC LED drivers with passive PFC up to 45W SO8 RED2501 LLC controller IC for CC LED drivers with passive PFC up to 45W SO8 RED2501 LLC controller IC for CC LED drivers with passive PFC up to 45W SO8 RED2511 LLC controller IC for CC LED drivers with passive PFC up to 100W SO8 RED2511 LLC controller IC for CC LED drivers with passive PFC up to 100W SO8 RED2511 LLC controller IC for CC LED drivers with passive PFC up to 100W SO8 RED2521 Ultra low-flicker version of RED2511 SO8 RED2521 Ultra low-flicker version of RED2511 SO8 RED2521 Ultra low-flicker version of RED2511 SO8 RED2541 LLC controller IC for CV LED drivers with active or passive PFC up to 300W SO8 RED2541 LLC controller IC for CV LED drivers with active or passive PFC up to 300W SO8 RED2541 LLC controller IC for CV LED drivers with active or passive PFC up to 300W SO8 RED2601 LLC controller IC for CC LED drivers with active PFC up to 300W SO8 RED2601 LLC controller IC for CC LED drivers with active PFC up to 300W SO8 RED2601 LLC controller IC for CC LED drivers with active PFC up to 300W SO8 RED2821 LLC controller IC for dimmable CC LED drivers with active or passive PFC up to 300W SO8 RED2821 LLC controller IC for dimmable CC LED drivers with active or passive PFC up to 300W SO8 RED2821 LLC controller IC for dimmable CC LED drivers with active or passive PFC up to 300W SO8 RED2421 Low Power LED Controller for LLC converters SOT23-6 RED2421 Low Power LED Controller for LLC converters SOT23-6 RED2421 Low Power LED Controller for LLC converters SOT23-6 RED2432 Zero-Flicker LED-Driver IC SOT23-6 RED2432 Zero-Flicker LED-Driver IC SOT23-6 RED2432 Zero-Flicker LED-Driver IC SOT23-6 RED2431 Zero-Flicker LED-Driver IC SOT23-6 RED2431 Zero-Flicker LED-Driver IC SOT23-6 RED2431 Zero-Flicker LED-Driver IC SOT23-6 RED2433 Zero-Flicker LED-Driver IC SOT23-6 RED2433 Zero-Flicker LED-Driver IC SOT23-6 RED2433 Zero-Flicker LED-Driver IC SOT23-6 RED2542 LLC controller IC for CV LED drivers up to 30W SOT23-6 RED2542 LLC controller IC for CV LED drivers up to 30W SOT23-6
NEW
RED2542 LLC controller IC for CV LED drivers up to 30W SOT23-6
NEW
RED2543 LLC controller IC for CV LED drivers up to 250W SOT23-6 RED2543 LLC controller IC for CV LED drivers up to 250W SOT23-6
NEW
RED2543 LLC controller IC for CV LED drivers up to 250W SOT23-6
NEW
RED2822 Resonant controller IC for dimmable CC LED drivers up to 250W SO8 RED2822 Resonant controller IC for dimmable CC LED drivers up to 250W SO8
NEW
RED2822 Resonant controller IC for dimmable CC LED drivers up to 250W SO8
NEW
NEW
NEW
NEW
RED2832 Resonant controller IC for dimmable CC LED drivers up to 250W SO8 RED2832 Resonant controller IC for dimmable CC LED drivers up to 250W SO8
NEW
RED2832 Resonant controller IC for dimmable CC LED drivers up to 250W SO8
NEW
NEW
RED2402 LLC controller IC for CC LED drivers with passive PFC up to 40W, fixed high operating frequency SOT23-6 RED2402 LLC controller IC for CC LED drivers with passive PFC up to 40W, fixed high operating frequency SOT23-6 RED2402 LLC controller IC for CC LED drivers with passive PFC up to 40W, fixed high operating frequency SOT23-6 RED2401 LLC controller IC for CC LED drivers with passive PFC up to 22W SOT23-6 RED2401 LLC controller IC for CC LED drivers with passive PFC up to 22W SOT23-6 RED2401 LLC controller IC for CC LED drivers with passive PFC up to 22W SOT23-6 RED2422 Ultra low-flicker version of RED2402 SOT23-6 RED2422 Ultra low-flicker version of RED2402 SOT23-6 RED2422 Ultra low-flicker version of RED2402 SOT23-6 RED2501 LLC controller IC for CC LED drivers with passive PFC up to 45W SO8 RED2501 LLC controller IC for CC LED drivers with passive PFC up to 45W SO8 RED2501 LLC controller IC for CC LED drivers with passive PFC up to 45W SO8 RED2511 LLC controller IC for CC LED drivers with passive PFC up to 100W SO8 RED2511 LLC controller IC for CC LED drivers with passive PFC up to 100W SO8 RED2511 LLC controller IC for CC LED drivers with passive PFC up to 100W SO8 RED2521 Ultra low-flicker version of RED2511 SO8 RED2521 Ultra low-flicker version of RED2511 SO8 RED2521 Ultra low-flicker version of RED2511 SO8 RED2541 LLC controller IC for CV LED drivers with active or passive PFC up to 300W SO8 RED2541 LLC controller IC for CV LED drivers with active or passive PFC up to 300W SO8 RED2541 LLC controller IC for CV LED drivers with active or passive PFC up to 300W SO8 RED2601 LLC controller IC for CC LED drivers with active PFC up to 300W SO8 RED2601 LLC controller IC for CC LED drivers with active PFC up to 300W SO8 RED2601 LLC controller IC for CC LED drivers with active PFC up to 300W SO8 RED2821 LLC controller IC for dimmable CC LED drivers with active or passive PFC up to 300W SO8 RED2821 LLC controller IC for dimmable CC LED drivers with active or passive PFC up to 300W SO8 RED2821 LLC controller IC for dimmable CC LED drivers with active or passive PFC up to 300W SO8 RED2421 Low Power LED Controller for LLC converters SOT23-6 RED2421 Low Power LED Controller for LLC converters SOT23-6 RED2421 Low Power LED Controller for LLC converters SOT23-6 RED2432 Zero-Flicker LED-Driver IC SOT23-6 RED2432 Zero-Flicker LED-Driver IC SOT23-6 RED2432 Zero-Flicker LED-Driver IC SOT23-6 RED2431 Zero-Flicker LED-Driver IC SOT23-6 RED2431 Zero-Flicker LED-Driver IC SOT23-6 RED2431 Zero-Flicker LED-Driver IC SOT23-6 RED2433 Zero-Flicker LED-Driver IC SOT23-6 RED2433 Zero-Flicker LED-Driver IC SOT23-6 RED2433 Zero-Flicker LED-Driver IC SOT23-6 RED2542 LLC controller IC for CV LED drivers up to 30W SOT23-6 RED2542 LLC controller IC for CV LED drivers up to 30W SOT23-6
NEW
RED2542 LLC controller IC for CV LED drivers up to 30W SOT23-6
NEW
RED2543 LLC controller IC for CV LED drivers up to 250W SOT23-6 RED2543 LLC controller IC for CV LED drivers up to 250W SOT23-6
NEW
RED2543 LLC controller IC for CV LED drivers up to 250W SOT23-6
NEW
RED2822 Resonant controller IC for dimmable CC LED drivers up to 250W SO8 RED2822 Resonant controller IC for dimmable CC LED drivers up to 250W SO8
NEW
RED2822 Resonant controller IC for dimmable CC LED drivers up to 250W SO8
NEW
NEW
NEW
NEW
RED2832 Resonant controller IC for dimmable CC LED drivers up to 250W SO8 RED2832 Resonant controller IC for dimmable CC LED drivers up to 250W SO8
NEW
RED2832 Resonant controller IC for dimmable CC LED drivers up to 250W SO8
NEW
NEW
RediSem Ltd. Science Park Shatin Hong Kong Tel. +852 2607 4141 Fax. +852 2607 4140 Careers | Contact © Copyright 2017-2023 RediSem Ltd.
High Efficiency - No Flicker LED Driver ICs
RediSem LED LLC converter deliver best-in-class efficiency, accurate primary side regulation of output voltage and current and full protection (incl. SELV).
RediSem LLC LED drivers have higher efficiency than flyback converters. Resonant converter operation minimizes losses resulting in lower component temperatures and smaller cases. All our designs have efficiencies exceeding 90%.
RediSem’s patented PPFC delivers excellent Power Factor Correction in a single stage LLC converter while offering accurate DC output with ripple well below 1% - resulting in no LED flicker.
RediSem LLC LED drivers offer the performance of a 2-stage converter at the price point of a 1-stage unit. Our LLC converters use low-cost robust bipolar transistors and smaller magnetics and EMI filtering than flyback systems.
RediSem has complete application designs and demonstrator units available for all its ICs. These production-ready LED driver designs come with full design infopacks and can be easily customized and optimized.
High Efficiency
High PF - Low Ripple
Cost Effectiveness
Simple Design
Contact Us Contact Us