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RT8561D - High Voltage 8-CH LED Driver

Datasheet Summary

Description

The RT8561Dis a 40V 8-CH LEDdriver capable of delivering 30mA to each channel with 10 LEDs (3.6V per diode), for a total of 80 LEDs per driver.

The RT8561D is a currentmode Boost converter that operates at 1MHz, with a wide VIN range from 4.5V to 24V and an on chip current switch rated at 2.5A.

Features

  • z High Voltage : VIN up to 24V, VOUT up to 40V z Adjustable Channel Current from 10mA to 30mA z 1.5% Channel Current Matching z Current-Mode PWM 1MHz Boost Converter z Easy and High Accuracy Digital Dimming by PWM Signal z Adjustable Soft-Start z Automatic Detection of Unconnected and/or Broken Channel z Adjustable Over-Voltage Protection z Disconnect Adjustable LED in Shutdown z No Power Sequence Concern z VIN Under-Voltage Lockout z Over-Temperature Protection z Current Limiting z Small 24-Lea.

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Datasheet Details

Part number RT8561D
Manufacturer Richtek
File Size 260.55 KB
Description High Voltage 8-CH LED Driver
Datasheet download datasheet RT8561D Datasheet
Additional preview pages of the RT8561D datasheet.

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Full PDF Text Transcription

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® RT8561D High Voltage 8-CH LED Driver General Description The RT8561Dis a 40V 8-CH LEDdriver capable of delivering 30mA to each channel with 10 LEDs (3.6V per diode), for a total of 80 LEDs per driver. The RT8561D is a currentmode Boost converter that operates at 1MHz, with a wide VIN range from 4.5V to 24V and an on chip current switch rated at 2.5A. The PWM output voltage loop regulates the LED pins to 0.6V with an auto adjustment circuit allowing voltage mismatches between LED strings. The RT8561D automatically detects and disconnects any unconnected and/or broken strings during operation from the PWM loop to prevent VOUT from over-voltage. The 1.5% matched LED currents on all channels can be simply adjustable with a resistor or a current sink.
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