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RT8450 Datasheet High Voltage Multi-Topology LED Driver

Manufacturer: Richtek

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Datasheet Details

Part number RT8450
Manufacturer Richtek
File Size 282.73 KB
Description High Voltage Multi-Topology LED Driver
Datasheet download datasheet RT8450 Datasheet

General Description

The RT8450/B is a current mode PWM regulator for LED driving applications.

With an 1.5A switch on board and wide input (4.5V to 40V) and/or output (up to 50V)ranges the RT8450/B can operate in any of the three common topologies : Buck, Boost or Buck-Boost.

With 800k/500kHz operating frequency, the external PWM inductor and input/output capacitors can all be small.

Overview

® RT8450/B High Voltage Multi-Topology LED Driver General.

Key Features

  • High Voltage : VIN Up to 40V, VOUT Up to 50V.
  • 1.5A Switch Current.
  • Buck, Boost or Buck-Boost Operation.
  • Current Mode PWM with 800kHz (RT8450) and 500kHz (RT8450B) Switching Frenquency.
  • Easy Dimming : Analog, PWM Digital or PWM Converting to Analog with One External Capacitor.
  • Programmable Soft-Start to Avoid Inrush Current.
  • Programmable Over Voltage Protection to Limit Output Voltage.
  • VIN Under Voltage Lockout and Thermal Shutdown.
  • RoHS Compliant and.

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