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RT8464 - Isolated Secondary Side 6-CH LED Driver

Description

The RT8464 is an isolated secondary side 6-CH LED driver that delivers well matched LED current to each channel of LED strings.

A built-in optocoupler driver supports the transformer primary side control circuit to regulate the LED current.

Features

  • include output over voltage protection and thermal shutdown. The RT8464 is available in the SOP-28 package. Features z High Voltage : VCC up to 32V z Channel Current Programmable z 3% Current Sense Threshold Voltage z Easy Analog and Digital Dimming Control z Adjustable Soft-Start to Avoid Inrush Current z Automatic Detecting Unconnected Channel z Adjustable Over Voltage Protection to Limit Output Voltage z Thermal Shutdown Under Voltage Lockout z SOP-28 Package z RoHS Compliant and Halogen Free.

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Datasheet Details

Part number RT8464
Manufacturer Richtek
File Size 175.09 KB
Description Isolated Secondary Side 6-CH LED Driver
Datasheet download datasheet RT8464 Datasheet

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Full PDF Text Transcription

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® RT8464 Isolated Secondary Side 6-CH LED Driver with Optocoupler Driver General Description The RT8464 is an isolated secondary side 6-CH LED driver that delivers well matched LED current to each channel of LED strings. A built-in optocoupler driver supports the transformer primary side control circuit to regulate the LED current. The LED current is linearly controlled by a high gain amplifier that drives the optocoupler to control the primary side, thus making the conventional secondary DC/DC PWM switching stage unnecessary. The RT8464 selects and regulates the LED strings with the highest voltage, hence it allows voltage mismatches between LED strings.
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