Datasheet4U Logo Datasheet4U.com

RT8453B - High Voltage Buck LED Driver

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.

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.

📥 Download Datasheet

Datasheet preview – RT8453B

Datasheet Details

Part number RT8453B
Manufacturer Richtek
File Size 135.91 KB
Description High Voltage Buck LED Driver
Datasheet download datasheet RT8453B Datasheet
Additional preview pages of the RT8453B datasheet.

📁 Similar Datasheet

  • RT84 - AUTOMOTIVE BRIDGE RECTIFIERS (LRC)
  • RT8004 - Synchronous Step-Down Regulator (Richtek Technology)
  • RT8015 - Synchronous Step-Down Regulator (Richtek Technology)
  • RT8015B - Synchronous Step-Down Converter (Richtek Technology)
  • RT805 - AUTOMOTIVE BRIDGE RECTIFIERS (LRC)
  • RT81 - AUTOMOTIVE BRIDGE RECTIFIERS (LRC)
  • RT810 - AUTOMOTIVE BRIDGE RECTIFIERS (LRC)
  • RT8100A - Synchronous buck PWM DC/DC (Richtek Technology Corporation)
  • RT8101 - 12V Synchronous Buck PWM DC-DC (Richtek Technology Corporation)
  • RT8101A - 12V Synchronous Buck PWM DC-DC (Richtek Technology Corporation)
Other Datasheets by Richtek
  • RT8453 - High Voltage Buck LED Driver
  • RT8450 - High Voltage Multi-Topology LED Driver
  • RT8450B - High Voltage Multi-Topology LED Driver
  • RT8452 - High Voltage High Current LED Driver Controller
  • RT8456 - Isolated Secondary Side LED Lighting Current Controller
  • RT8458 - High Efficiency PWM Buck LED Driver Controller
  • RT8458A - High Efficiency PWM Buck LED Driver Controller
  • RT8458D - Constant Current PWM Buck Controller

Full PDF Text Transcription

Click to expand full text
RT8453B 1.5A, 500kHz, 40V High Voltage Buck LED Driver 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. High efficiency is achieved with its 190mV current sensing capability. Dimming can be either analog or PWM digital signal driven. The RT8453B is available in a small SOP-8 (Exposed pad) package.
Published: |