概要

The ISL1904 is a high-performance, critical conduction mode (CrCM), flyback controller used for single-stage conversion of the AC mains to a constant current source with power factor correction (PFC). The controller regulates the output current by monitoring the primary side switching current so the feedback signal does not cross the isolation barrier. Operation in CrCM allows near zero-voltage quasi-resonant switching (ZVS) for improved efficiency while maximizing magnetic core utilization. The ISL1904 LED driver provides all of the features required for high-performance dimmable LED ballast designs and supports AC or DC input, isolated or non-isolated flyback and boost topologies. This advanced BiCMOS controller features all of the functions required to design low cost low parts count LED driver.

ISL1904 Functional Diagram
ISL1904 Functional Diagram
  • Excellent LED current regulation over line, load, and temperature
  • 0 - 100% dimming with leading-edge (triac) and trailing-edge dimmers
  • Power factor correction for up to 0.995 power factor and less than 20% harmonic content
  • Critical conduction mode (CrCM) operation for quasi-resonant high efficiency performance
  • Supports universal AC mains input
  • Configurable for PWM or DC current dimming control of LEDs
  • Monitors FET switching current for load regulation
  • Supports isolated and non-isolated boost and flyback topologies
  • Closed loop soft-start for no overshoot
  • OFFREF feature to set dimming off-point to improve fixture performance matching
  • -40°C to +125°C operation
  • Pb-free (RoHS compliant)

アプリケーション

  • Industrial and commercial LED lighting
  • Retrofit LED lamps with triac dimming
  • Universal AC mains input LED retrofit lamps
  • AC or DC Input LED ballasts

ドキュメント

= ピックアップ
分類 タイトル 日時
データシート
ISL1904 Datasheet
PDF 1.01 MB
EOL通知
PLC21060 - End of Life Notice
PDF 603 KB
アプリケーションノート
AN1681: Grounding Techniques
PDF 509 KB
アプリケーションノート
AN1684: Nonideality of Ground
PDF 397 KB
ガイド
ISL1904DEMO1Z User Guide
PDF 2.50 MB
5件

設計・開発

ISL1904DEMO1Z Offline Triac Dimmable Isolated LED Driver Bottom of Demonstration Board

ISL1904DEMO1Z

Demonstration
詳しくはこちら

Offline Triac Dimmable Isolated LED Driver Demonstration Board

The ISL1904DEMO1Z demo board converts a high line AC input voltage to an 18V, 700mA DC output. It is implemented with Renesas' critical conduction mode (CrCM) LED...

主要ドキュメント:
ISL1904DEMO1Z User Guide

ECADモデル

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ECADモデルを調べる
Diagram of ECAD Models

製品選択

    Processing table
    Pkg. Type
    Carrier Type
    MOQ
    ご購入 / サンプル
    型名
    ISL1904FAZ
    circle廃止品
    memory
    spa
    view_in_ar
    		QSOP Tube 1960
    ISL1904FAZ-T
    circle廃止品
    memory
    spa
    view_in_ar
    		QSOP Reel 2500
    ISL1904FAZ-T7A
    circle廃止品
    memory
    spa
    view_in_ar
    		QSOP Reel 250
    ISL1904FAZ-TK
    circle廃止品
    memory
    spa
    view_in_ar
    		QSOP Reel 2000
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