Datasheet4U Logo Datasheet4U.com

RT8450 - High Voltage Multi-Topology LED Driver

General Description

The RT8450/B is a current mode PWM regulator for LED driving applications.

With an 1.5A switch on board and wide input (4.5V to 40V) and/or output (up to 50V)ranges the RT8450/B can operate in any of the three common topologies : Buck, Boost or Buck-Boost.

Key Features

  • High Voltage : VIN Up to 40V, VOUT Up to 50V.
  • 1.5A Switch Current.
  • Buck, Boost or Buck-Boost Operation.
  • Current Mode PWM with 800kHz (RT8450) and 500kHz (RT8450B) Switching Frenquency.
  • Easy Dimming : Analog, PWM Digital or PWM Converting to Analog with One External Capacitor.
  • Programmable Soft-Start to Avoid Inrush Current.
  • Programmable Over Voltage Protection to Limit Output Voltage.
  • VIN Under Voltage Lockout and Thermal Shutdown.
  • RoHS Compliant and.

📥 Download Datasheet

Datasheet Details

Part number RT8450
Manufacturer Richtek
File Size 282.73 KB
Description High Voltage Multi-Topology LED Driver
Datasheet download datasheet RT8450 Datasheet

📁 Similar Datasheet

Part Number Description Manufacturer
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

Other Datasheets by Richtek

Part Number Description
RT8450B High Voltage Multi-Topology LED Driver
RT8452 High Voltage High Current LED Driver Controller
RT8453 High Voltage Buck LED Driver
RT8453B High Voltage Buck LED Driver
RT8456 Isolated Secondary Side LED Lighting Current Controller

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

View original datasheet text
® RT8450/B High Voltage Multi-Topology LED Driver General Description The RT8450/B is a current mode PWM regulator for LED driving applications. With an 1.5A switch on board and wide input (4.5V to 40V) and/or output (up to 50V)ranges the RT8450/B can operate in any of the three common topologies : Buck, Boost or Buck-Boost. With 800k/500kHz operating frequency, the external PWM inductor and input/output capacitors can all be small. High efficiency is achieved by a 190mV current sensing. Dimming can be done either analog or PWM signal. An unique built-in clampping comparator and filtering resistor allow easy low noise analog dimming conversion from PWM signal with only one external capacitor. The RT8450/B is available in a TSSOP-16 (Exposed Pad) and WDFN-12L 3x3 packages.