Datasheet4U Logo Datasheet4U.com

RT8477 - High Voltage High Current LED Driver

Datasheet Summary

Description

The RT8477 is a current mode PWM controller designed to drive an external MOSFET for high current LED applications with wide input voltage (4.5V to 50V) and output voltage (up to 50V) ranges.

Features

  • Buck, Boost Constant Current Converter.
  • High Voltage : VIN up to 50V, VOUT up to 50V.
  • 380kHz Fixed Switching Frequency.
  • Analog or PWM Control Signal for LED Dimming.
  • Internal Soft-Start to Avoid Inrush Current.
  • Under-Voltage Lockout.
  • Thermal Shutdown.
  • RoHS Compliant and Halogen Free.

📥 Download Datasheet

Datasheet preview – RT8477

Datasheet Details

Part number RT8477
Manufacturer Richtek
File Size 185.02 KB
Description High Voltage High Current LED Driver
Datasheet download datasheet RT8477 Datasheet
Additional preview pages of the RT8477 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
  • RT8477A - High Voltage High Multiple-Topology Current LED Driver
  • RT8470 - High Brightness LED Driver
  • RT8471 - High Brightness LED Driver
  • RT8472 - High Brightness LED Driver
  • RT8473 - High Brightness LED Driver
  • RT8474 - High Voltage Multiple-Topology LED Driver
  • RT8474A - High Voltage Multiple-Topology LED Driver
  • RT8475 - High Voltage High Current LED Driver Controller

Full PDF Text Transcription

Click to expand full text
® RT8477 High Voltage High Current LED Driver General Description The RT8477 is a current mode PWM controller designed to drive an external MOSFET for high current LED applications with wide input voltage (4.5V to 50V) and output voltage (up to 50V) ranges. With internal 380kHz operating frequency, the size of the external PWM inductor and input/output capacitors can be minimized. High efficiency is achieved by a 100mV current sensing control. LED Dimming control can be done by analog. The RT8477 is now available in the SOP-8 package. Ordering Information RT8477 Package Type S : SOP-8 Lead Plating System G : Green (Halogen Free and Pb Free) Note : Richtek products are :  RoHS compliant and compatible with the current requirements of IPC/JEDEC J-STD-020.
Published: |