概要

The ISL78263 offers synchronous boost and buck controllers. The boost controller operates either as an independent channel or as a pre-boost function that supplies the buck controller. The low-IQ buck controller uses only 6µA quiescent current, allowing it to support low-power, always-on operation. Both controllers support wide duty-cycles for switching frequencies from 200kHz to 2.2MHz. Both devices can be synchronized to an external clock and offer programmable spread spectrum clocking to mitigate EMI.

In pre-boost buck mode, the boost of the ISL78263 can be set to activate during falling VIN transients and continues to operate with an input voltage down to 2.1V. This allows the buck output to maintain regulation, even as the VIN voltage falls below its output. To support the increase in input current that occurs when VIN falls, the ISL78263 integrates robust MOSFET drivers to allow the use of multiple FETs in parallel.

ISL78263 is qualified to AEC-Q100 Grade 1 and is specified to operate across an ambient temperature range of -40°C to 125°C. The device is available in a 5mmx5mm, 32 Ld WFQFN (Wettable Flank) package. The features of the ISL78263 make it ideally suited as a front-end regulator for automotive systems that must maintain always-on operation and support severe cold-cranking transients.

  • VIN operating range: 2.1 to 42V
  • Low quiescent current: 6µA typical, buck channel
  • Switching frequency: 200kHz to 2.2MHz
  • Boost frequency at 1x or 0.2x the buck frequency
  • Dropout mode (buck) for high duty-cycle operation
  • 25ns on-times for low duty-cycle operation
  • External synchronization
  • Programmable spread spectrum clocking
  • 2A Sourcing / 3A sinking MOSFET drivers
  • Boot UV and programmable boot refresh time
  • Extensive protection mechanisms for OV/UV/OC/OT

アプリケーション

  • Automotive battery supplied application
  • In cabin systems
  • ADAS: Advanced Driver Assist Systems
  • Start-stop protected systems (such as head unit, cluster, e-Mirror)

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
ISL78263 Datasheet
PDF 1.82 MB
Product Advisory
PA22026 - MSL1 Packing Change for listed Renesas Products
PDF 414 KB
製品変更通知
PCN21049 - Package design revision for listed Renesas WFQFN 5x5mm Package
PDF 211 KB
マニュアル－開発ツール
ISL78263EVAL1Z User Manual
PDF 1.36 MB
4件

設計・開発

ISL78263EVAL1Z Evaluation Board

ISL78263EVAL1Z

Evaluation
詳しくはこちら

Automotive 42V Dual Synchronous Boost & Low-Iq Buck Controllers with Integrated Drivers Evaluation Board

The ISL78263EVAL1Z evaluation board is used to evaluate the dual-converter, synchronous buck-and-boost operation of the ISL78263 controller. The board evaluates Channel...

主要ドキュメント:
ISL78263EVAL1Z User Manual
ISL78264EVAL1Z Evaluation Board

ISL78264EVAL1Z

Evaluation
詳しくはこちら

Automotive Dual Synchronous Buck Controller with Integrated Drivers Evaluation Board

The ISL78264EVAL1Z evaluation board is used to evaluate the two-channel synchronous buck converter operation of the ISL78264 dual buck controller in which the...

主要ドキュメント:
ISL78264EVAL1Z User Manual

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製品選択

    Processing table
    Pkg. Type
    Carrier Type
    Moisture Sensitivity Level (MSL)
    Price (USD) | 1ku
    ご購入 / サンプル
    型名
    ISL78263ARZ
    circleアクティブ
    memory
    spa
    view_in_ar
    サンプル入手可能
    		 WFQFN Tube 1 3.423 サンプルを入手,
    ISL78263ARZ-T
    circleアクティブ
    memory
    spa
    view_in_ar
    サンプル入手可能
    		 WFQFN Reel 1 サンプルを入手,
    ISL78263-T7A
    info
    memory
    view_in_ar
    ISL78263ARZ-T7A
    circleアクティブ
    memory
    spa
    view_in_ar
    サンプル入手可能
    今すぐ購入する
    		WFQFN Reel 1 サンプルを入手,
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    ビデオ&トレーニング

    ISL78263/4 Dual 40V Low IQ Controllers With Spread Spectrum Clocking

    Renesas introduces the ISL78263 and ISL78264 dual output synchronous controllers with low IQ for automotive always-on systems.

    Video List
    ISL78263/4 Dual 40V Low IQ Controllers With Spread Spectrum Clocking