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RT8453 - High Voltage Buck LED Driver

Datasheet Summary

Description

The RT8453 is a Buck current mode PWM regulator for LED driving applications.

It has a 1.5A switch on board and can be operated with wide input range from 4.5V to 40V.

With a 800kHz operating frequency, the external PWMinductor and input/output capacitors can all be small.

Features

  • z High Voltage : VIN up to 40V z 1.5A Switch Current z Current Mode PWM with 800kHz Switching z Frequency z Easy Dimming : Analog or Digital method z Programmable Soft Start to Avoid Inrush Current z VIN Under Voltage Lockout and Thermal Shutdown z RoHS Compliant and Halogen Free Ordering Information RT8453 Package Type SP : SOP-8 (Exposed Pad-Option 2) Operating Temperature Range G : Green (Halogen Free with Comme- rcial Standard) Note : Richtek Green products are : ` RoHS compliant and compat.

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Datasheet preview – RT8453

Datasheet Details

Part number RT8453
Manufacturer Richtek
File Size 131.44 KB
Description High Voltage Buck LED Driver
Datasheet download datasheet RT8453 Datasheet
Additional preview pages of the RT8453 datasheet.

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Full PDF Text Transcription

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Conceptual RT8453 High Voltage BUCK LED Driver General Description The RT8453 is a Buck current mode PWM regulator for LED driving applications. It has a 1.5A switch on board and can be operated with wide input range from 4.5V to 40V. With a 800kHz operating frequency, the external PWMinductor and input/output capacitors can all be small. High efficiency is achieved with a 190mV current sensing. Dimming can be either analog or PWM digital signal driven. The RT8453 is available in SOP8 (Exposed pad) package. Features z High Voltage : VIN up to 40V z 1.
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