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RT8456 - Isolated Secondary Side LED Lighting Current Controller

General Description

The RT8456 is an isolated secondary LED current controller designed specifically for lighting fixtures such as E27, GU10, T5 and T8.

The IC is suitable for applications that require power line isolation for safety and reliability, high conversion efficiency, as well as high LED current accuracy.

Key Features

  • z z z z z z z z Secondary Side LED Current Regulation 4.75V to 48V Operation Range High Accuracy 59mV LED Current Threshold Control 0.6mA Operating Current Programmable LED Current Output Over Voltage Protection Small SOT-23-6 Package RoHS Compliant and Halogen Free.

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Datasheet Details

Part number RT8456
Manufacturer Richtek
File Size 101.69 KB
Description Isolated Secondary Side LED Lighting Current Controller
Datasheet download datasheet RT8456 Datasheet

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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® RT8456 Isolated Secondary Side LED Lighting Current Controller General Description The RT8456 is an isolated secondary LED current controller designed specifically for lighting fixtures such as E27, GU10, T5 and T8. The IC is suitable for applications that require power line isolation for safety and reliability, high conversion efficiency, as well as high LED current accuracy. The RT8456 contains 1) a constant current regulating amplifier with 59mV threshold used to program the LED string current with a simple resistor to within 5% LED current accuracy; 2) an over voltage comparator to protect the output when LED string is open or broken; 3) and an opto-coupler driver to control the primary side of the transformer to complete the system loop.