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RT8498 - 18V Multi-Topology LED Driver

Description

The RT8498 is a current-mode LED driver supporting wide input voltage range from 3V to 18V and output voltage up to 18V.

With internal 350kHz operating frequency, the size of the external PWM inductor and input/output capacitors can be minimized.

Features

  • High Voltage : VIN Up to 18V, VOUT Up to 18V.
  • Built-In 2A Power Switch.
  • Current-Mode PWM Control.
  • 350kHz Fixed Switching Frequency.
  • Analog, PWM Digital or PWM Converting to Analog with One External Capacitor.
  • Internal Soft-Start to Avoid Inrush Current.
  • Under-Voltage Lockout.
  • Internal Over Voltage Protection to Limit Output Voltage.
  • Cycle-by Cycle Current Limit.
  • Thermal Shutdown.

📥 Download Datasheet

Datasheet Details

Part number RT8498
Manufacturer Richtek
File Size 230.05 KB
Description 18V Multi-Topology LED Driver
Datasheet download datasheet RT8498 Datasheet

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Full PDF Text Transcription

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® RT8498 18V Multi-Topology LED Driver with Dimming Control General Description The RT8498 is a current-mode LED driver supporting wide input voltage range from 3V to 18V and output voltage up to 18V. With internal 350kHz 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. LED dimming control can be done from either analog or PWM signal. The RT8498 provides an internal soft-start function to avoid inrush current and thermal shutdown to prevent the device from overheat. The RT8498 is available in the SOT-23-6 package.
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