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RT8473 Datasheet High Brightness LED Driver

Manufacturer: Richtek

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Datasheet Details

Part number RT8473
Manufacturer Richtek
File Size 255.22 KB
Description High Brightness LED Driver
Datasheet download datasheet RT8473 Datasheet

General Description

The RT8473 is a high efficiency, continuous mode inductive step-down converter, designed for driving single or multiple series connected LEDs from a voltage source higher than the LED voltage.

It operates from an input voltage of 7V to 30V and employs hysteretic control with a high side current sense resistor to set the constant output current.

The RT8473 includes an output switch and a high side output current sensing circuit, which uses an external resistor to set the nominal average output current.

Overview

® RT8473 1A, Hysteretic, High Brightness LED Driver with Internal Switch.

Key Features

  • z 7V to 30V Input Voltage Range z Hysteretic Control with High Side Current Sensing z Internal N-MOSFET with 350mΩ Low RDS(ON) z 1A Output Current z Up to 97% Efficiency z Typical ±5% LED Current Accuracy z Analog or PWM Control Signal for LED Dimming z 300Hz On-Board Ramp Generator z Input Under Voltage Lockout z Thermal Shutdown Protection z RoHS Compliant and Halogen Free.

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