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RT8562B - High Voltage 8-CH LED Driver

Datasheet Summary

Description

The RT8562B is a 40V 8-CH LED driver capable of delivering 30mA to each channel with 10 LEDs (3.6V per diode), total of 80 LEDs with one driver.

The RT8562B is a current mode boost converter opearated at 1MHz, wide VIN range covers from 4.5V to 24V and the on-chip current switch is rated at 2.5A.

Features

  • include programmable output over voltage protection, LED curren limit, PWM switch current limit and thermal shutdown. The RT8562B is packaged with a tiny footprint package of WQFN-24L 4x4 packages. Ordering Information RT8562B Package Type QW : WQFN-24L 4x4 (W-Type) Lead Plating System G : Green (Halogen Free and Pb Free) Note : Richtek products are : ` RoHS compliant and compatible with the current requirements of IPC/JEDEC J-STD-020. ` Suitable for use in SnPb or Pb-free soldering processes. M.

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Datasheet Details

Part number RT8562B
Manufacturer Richtek
File Size 261.46 KB
Description High Voltage 8-CH LED Driver
Datasheet download datasheet RT8562B Datasheet
Additional preview pages of the RT8562B datasheet.

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Full PDF Text Transcription

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RT8562B High Voltage 8-CH LED Driver General Description The RT8562B is a 40V 8-CH LED driver capable of delivering 30mA to each channel with 10 LEDs (3.6V per diode), total of 80 LEDs with one driver. The RT8562B is a current mode boost converter opearated at 1MHz, wide VIN range covers from 4.5V to 24V and the on-chip current switch is 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 RT8562B automatically detects and disconnects any unconnected and/or broken strings during operation from PWM loop to prevent VOUT from over voltage. The 1.5% matched LED currents on all channels are simply programmed with a resistor or a current sink.
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