iW3638数据手册集成电路（IC）的LED驱动器规格书PDF

描述 Description

The iW3638 second-stage buck LED driver provides constant current to LEDs directly from DC power supplies. It supports a non-isolated buck converter topology to post-regulate from an off-line AC/DC converter, minimizing low frequency output ripple current and eliminating virtually all flicker in the system, even down to 1%.

A wide range of DC input voltages simplifies design by enabling the use of just one second-stage driver across any commercial lighting product portfolio.

特性 Features

• Single-Stage DC/DC Buck
• Supports Wide DC Input Voltage with Tight Output Current Regulation (±3%)
• Output Power up to 90W
• PrimAccurate™ Primary-Side Control for Excellent Output Current Regulation with No Direct Voltage and Current Feedback Components Needed
• Independent Maximum Load Current Setting Interface
• PWM Dimming
• Supports 0-10V Dimming with iW339 Dimming Interface
• Wide Dimming Range: 1% - 100%, with 1% Resolution
• Configurable Minimum Dimming Setting
• Dim-to-Off, 1%, 5% or 10%

应用 Application

• Commercial Lighting:
• T8
• 0-10V Dimming
• External Fixture Drivers
• Wireless and Intelligent LED Lighting Systems