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RT8453B Datasheet High Voltage Buck LED Driver

Manufacturer: Richtek

Overview: RT8453B 1.5A, 500kHz, 40V High Voltage Buck LED Driver General.

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General Description

The RT8453B is a buck current mode PWM regulator for LED driving applications.

It provides an integrated 1.5A switch and can be operated with a wide input voltage range from 4.5V to 40V.

With a 500kHz operating frequency, the RT8453B allows all external inductor and input/output capacitors to be small.

Key Features

  • z Input Operating Range 4.5 to 40V z 1.5A Switching Current Limitation z 10% Constant Current Output Accuracy z Current Mode PWM with 500kHz Switching Frequency z Analog or PWM Control Signal for LED Dimming z Programmable Soft-Start z Input Under Voltage Lockout z Over Temperature Protection z RoHS Compliant and Halogen Free.

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