RT8495数据手册Richtek中文资料规格书

描述 Description

The RT8495 is a dimmable two-stage LED driver controller with the 2nd stage MOSFET integrated inside. It consists of a Boost controller on the first stage and a Buck converter on the second stage. By adapting two-stage topology, the RT8495 is highly compatible with ET (Electronic Transformer) and performs extremely high Power Factor in specific MR16 / AR111 LED lighting applications.



The Boost converter on the first stage provides constant output voltage with well inductor current control. The Buck converter on the second stage provides constant LED output current by hysteretic peak current regulation.



The RT8495 is available in the WDFN-10L 3x3 package.

特性 Features

• Two-Stage Topology (Boost + Buck)
• 2nd Stage MOSFETs Inside
• Wide Input Voltage Range : 4.5V to 36V
• Excellent Power Factor
• Programmable Boost Output Voltage
• Independent Dual Stage Function
• Programmable LED Current with ±6% LED Current Accuracy
• Flicker-Free LED Dimming
• Wide Dimmer and Electronic
• Transformer Compatibility
• Input Under Voltage Lockout Detection
• Thermal Shutdown Protection
• 10-Lead WDFN Package

应用 Application

• MR16 Lighting
• Signage and Decorative LED Lighting
• Architectural Lighting
• High Power LED Lighting
• Low Voltage Industrial Lighting
• Indicator and Emergency Lighting
• Automotive LED Lighting