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RT8463 - High Voltage Multi-Topology LED Driver

Description

The RT8463 is a current mode PWM regulator for LED driving applications.

With a 2A power switch, wide input voltage (4.5V to 50V) and output voltage (up to 50V) ranges, the RT8463 can operate in any of the three common topologies : Buck, Boost or Buck-Boost.

Features

  • High Voltage : VIN Up to 50V, VOUT Up to 50V.
  • Buck, Boost or Buck-Boost Operation.
  • Built-In 2A Power Switch.
  • Current Mode PWM Control.
  • 470kHz Fixed Switching Frequency.
  • Easy Dimming : Analog, PWM Digital or PWM Converting to Analog with One External Capacitor.
  • Adjustable Soft-Start to Avoid Inrush Current.
  • Adjustable Over Voltage Protection to Limit Output Voltage.
  • Thermal Shutdown.
  • Under Voltage Lockout.
  • RoHS Compliant and Halogen Free App.

📥 Download Datasheet

Datasheet Details

Part number RT8463
Manufacturer Richtek
File Size 292.54 KB
Description High Voltage Multi-Topology LED Driver
Datasheet download datasheet RT8463 Datasheet

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Full PDF Text Transcription

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® RT8463 High Voltage Multi-Topology LED Driver General Description The RT8463 is a current mode PWM regulator for LED driving applications. With a 2A power switch, wide input voltage (4.5V to 50V) and output voltage (up to 50V) ranges, the RT8463 can operate in any of the three common topologies : Buck, Boost or Buck-Boost. With 470kHz operating frequency, the size of the external PWM inductor and input/output capacitors can be minimized. High efficiency is achieved by a 100mV current sensing control. Brightness dimming can be controlled from either analog or PWM signal. A unique built-in clamping comparator and filtering resistor allow easy low noise analog dimming conversion from PWM signal with only one external capacitor.
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