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RT8567 - 6-CH 43V WLED Driver

Datasheet Summary

Description

The RT8567 is a high efficiency driver for white LEDs.

It is designed for LCD panels that employ an array of LEDs as the lighting source.

An integrated current mode boost controller drives six strings in parallel and supports up to 12 WLEDs per string.

Features

  • z Wide Input Voltage : 2.7V to 24V z High Output Voltage : Up to 43V z Channel Current Programmable : 5mA to 40mA z Channel Current Regulation with Accuracy ±3% and Matching ±2% z Dimming Controls : External PWM Input Up to 25kHz z Adjustable Switching Frequency : 500kHz to 2MHz z Built-In Soft-Start z Protections ` LED Strings Open Detection ` Current Limit Protection ` Programmable Over Voltage Protection ` Over Temperature Protection z 20-Lead WQFN Package z RoHS Compliant and Halogen Free Ap.

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Datasheet preview – RT8567

Datasheet Details

Part number RT8567
Manufacturer Richtek
File Size 262.27 KB
Description 6-CH 43V WLED Driver
Datasheet download datasheet RT8567 Datasheet
Additional preview pages of the RT8567 datasheet.

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Full PDF Text Transcription

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RT8567 6-CH 43V WLED Driver General Description The RT8567 is a high efficiency driver for white LEDs. It is designed for LCD panels that employ an array of LEDs as the lighting source. An integrated current mode boost controller drives six strings in parallel and supports up to 12 WLEDs per string. The internal current sinks support a maximum of ±2% current mismatching for excellent brightness uniformity in each string of LEDs. To provide enough headroom for current sink operation, the boost controller monitors the minimum voltage of the feedback pins and regulates an optimized output voltage for power efficiency. The RT8567 has a wide input voltage range from 2.7V to 24V and can provide adjustable LED current from 5mA to 40mA.
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