The ZLED7520 continuous-mode inductive step-down converter is part of our ZLED7x20 family of LED-control ICs. It is designed for applications requiring high brightness and high current. It can efficiently drive a single LED or multiple series-connected LEDs from a voltage input higher than the LED forward voltage: Vin = 6 to 40 VDC. It provides an adjustable output current ≤0.75A, which is set via an external resistor and controlled by the ZLED7520's integrated high-side output current-sensing circuit and high speed internal 40V power switch. An external control signal, which can be a DC voltage, PWM, or microcontroller-generated waveform, on the ADJ pin can also be used to linearly adjust a continuous output current or to control a gated output current. The output can be turned off by applying a voltage lower than 0.2V to the ADJ pin, which puts the ZLED7520 in a low-current standby state. The ZLED7520 enables diverse industrial and consumer lighting applications requiring high driving currents, wide operating voltage range, high efficiency, and variable brightness control. It offers over-temperature and LED open-circuit protection. The ZLED7520 can also minimize bill-of-material costs because very few external components are required for most applications. Only a resistor, a diode, an inductor, and three capacitors are needed for a typical basic application.

特長

  • Up to 0.75A output current
  • Internal 40V power switch
  • Wide DC input voltage range: 6 to 40 VDC
  • Output current accuracy: 3% (typical)
  • Dimming ratio: 1200:1
  • LED open-circuit protection
  • Thermal shutdown protection

製品選択

発注型名 Part Status Pkg. Type Lead Count (#) Temp. Range Carrier Type 購入/サンプル
Obsolete VFQFPN 5 -40 to 125°C Reel
Availability

ドキュメント&ダウンロード

タイトル 他の言語 分類 形式 サイズ 日付
データシート
ZLED7x20 Short-form Datasheet ショートフォーム(簡略版) PDF 188 KB
ZLED7x20 Datasheet データシート PDF 620 KB
ユーザーガイド
IDT CAD Altium Libraries for AID Products Rev 20160819 ガイド ZIP 1.20 MB
アプリケーションノート、ホワイトペーパー
ZLED7000 / ZLED7020 Application Note - Buck Converter LED Driver Applications アプリケーションノート PDF 263 KB
PCN / PDN
PDN-2017-005-01 PRODUCT DISCONTINUANCE NOTICE 製品中止通知 PDF 106 KB