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RT8560 - High Voltage 4 Channel LED Driver

Datasheet Summary

Description

The RT8560 is a 60V 4-channel LED driver capable of delivering 30mA to each channel with 15 LEDs (3.6V per diode) total 60 LEDs with one driver.

Features

  • include programmable PWM output over voltage protection, LED curren limit, PWM switch current limit and thermal shutdown. The RT8560 is packaged with a tiny footprint package of WQFN-20L 4x4 packages. Pin Configurations (TOP VIEW) GND GND LED1 LED2 LED3 20 19 18 17 16 GND 1 15 LED4 GND 2 14 VC GND 3 GND 13 SS SW 4 21 12 OVP SW 5 11 EN 6 7 8 9 10 VCC2 VCC1 RISET ACTL DCTL WQFN-20L 4x4 DS8560-01 April 2011 Features z High Voltage : VIN up to 40V, VOUT up to 60V, Driving up to 60 x.

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Datasheet Details

Part number RT8560
Manufacturer Richtek
File Size 262.15 KB
Description High Voltage 4 Channel LED Driver
Datasheet download datasheet RT8560 Datasheet
Additional preview pages of the RT8560 datasheet.

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Full PDF Text Transcription

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RT8560 High Voltage 4 Channel LED Driver General Description The RT8560 is a 60V 4-channel LED driver capable of delivering 30mA to each channel with 15 LEDs (3.6V per diode) total 60 LEDs with one driver. The RT8560 is a current mode boost converter opearated at 1MHz switching frequency, wide VIN range covers from 7V to 40V and the on-chip current switch is rated at 1.5A. The PWM output voltage loop selects and regulates the LED pin with the highest voltage string to 0.9V allowing voltage mismatches between LED strings. The RT8560 automatically detects and disconnects any unconnected and/or broken strings during operation from PWM loop to prevent VOUT from over voltage. The 3% matched LED currents on all channels are simply programmed with a resistor or a current sink.
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