NOTICE - The following device(s) are recommended alternatives:

The ISL9440, ISL9440A and ISL9441 are quad-output synchronous buck controllers that integrate 3 PWM controllers and 1 low drop-out linear regulator controller, which are full featured and designed to provide multi-rail power for use in products such as cable and satellite set-top boxes, VoIP gateways, cable modems, and other home connectivity products as well as a variety of industrial and general purpose applications. Each output is adjustable down to 0.8V. The PWMs are synchronized at 180° out of phase thus reducing the RMS input current and ripple voltage. The ISL9440, ISL9440A and ISL9441 offer internal soft-start, independent enable inputs for ease of supply rail sequencing, and integrated UV/OV/OC/OT protections in a space conscious 5mm x 5mm QFN package. The ISL9440 and ISL9440A offers an early warning function to output a logic signal to warn the system to back up data when the input voltage falls below a certain level. The ISL9440, ISL9440A and ISL9441 are utilize internal loop compensation to keep minimum peripheral components for compact design and a low total solution cost. These devices are implemented with current mode control with feed forward to cover various applications even with fixed internal compensations. The table below shows the difference in terms of ISL9440, ISL9440A and ISL9441 features.

PART NUMBER EARLY WARNING SWITCHING FREQUENCY (kHz)
ISL9440 YES 300
ISL9440A YES 600
ISL9441 NO 300

特長

  • Three integrated synchronous buck PWM controllers
  • Internal bootstrap diodes
  • Internal compensation
  • Internal soft-start
  • Independent control for each regulator and programmable output voltages; independent enable/shutdown
  • Fixed Switching Frequency: 300kHz (ISL9440, ISL9441); 600kHz (ISL9440A)
  • Adaptive shoot through protection on all synchronous buck controllers
  • Independently programmable voltage outputs
  • Out-of-phase switching to reduce input capacitance (0°/180°/0°)
  • No external current sense resistor
  • Uses lower MOSFET's rDS(ON)
  • Current mode controller with voltage feed forward
  • Complete protection
  • Overcurrent, overvoltage, undervoltage lockout, over-temperature
  • Cycle-by-cycle current limiting
  • Wide input voltage range
  • Input rail powers VIN Pin: 5.6V to 24V
  • Input rail powers VCC_5V Pin (VIN tied to VCC_5V, for 5V input applications): 4.5V to 5.6V
  • Early warning (ISL9440, ISL9440A) on input voltage failure
  • Integrated reset function (ISL9440, ISL9440A)
  • Pb-free (RoHS compliant)

アプリケーション

  • Satellite and Cable Set-Top Boxes
  • Cable Modems
  • VoX Gateway Devices
  • NAS/SAN Devices

tune製品選択

製品名 Part Status Pkg. Type Carrier Type MOQ 購入/サンプル
Active QFN Tube 60
Availability
Active QFN Reel 6000
Availability

descriptionドキュメント

タイトル language 分類 形式 サイズ 日付
データシート
star ISL9440, ISL9440A, ISL9441 Japanese Datasheet English データシート PDF 105 KB
ユーザーガイド、マニュアル
ISL9440EVAL2Z User Guide マニュアル-開発ツール PDF 1.22 MB
アプリケーションノート、ホワイトペーパー
Five Easy Steps to Create a Multi-Load Power Solution ホワイトペーパー PDF 846 KB
How Green is Your Cloud? ホワイトペーパー PDF 295 KB
AN1681: Grounding Techniques アプリケーションノート PDF 509 KB
AN1684: Nonideality of Ground アプリケーションノート PDF 397 KB
PCN / PDN
PCN20029A - Alternate bond wire material and assembly facility of the listed Renesas QFN packaged products 製品変更通知 PDF 327 KB
PCN13024 - Alternate Manufacturing Site for Assembly of the Listed Intersil DFN/QFN Packaged Products - Advanced Semiconductor Engineering - Chung-Li, Taiwan (ASECL 製品変更通知 PDF 183 KB
PCN13009 - Alternate Bond Wire Material and Manufacturing Facilities for Assembly of the Listed Intersil DFN/QFN Packaged Products - Advanced Semiconductor Engineering (ASECL) - Chung-Li (ASECL), Taiwan and STATS ChipPAC (SCM) - Kuala Lump 製品変更通知 PDF 173 KB
PCN10083 - Alternate Bond Wire Material for Assembly of the Listed Intersil DFN/QFN Packaged Products - STATS ChipPAC Malaysia 製品変更通知 PDF 79 KB
PCN10055 - Alternate Bond Wire Material for Assembly of the Listed Intersil DFN/QFN Packaged Products - STATS ChipPAC Malaysia 製品変更通知 PDF 248 KB
その他資料
ISL9440 Triple Sync Buck with Linear Reg iSim:PE Model 回路図 SXSCH 253 KB
TB389: PCB Land Pattern Design and Surface Mount Guidelines for QFN Packages その他資料 PDF 958 KB

file_downloadダウンロード

タイトル language 分類 形式 サイズ 日付
Hardware
ISL9440EVAL2Z Design Files PCB設計ファイル ZIP 349 KB

select_allソフトウェア/ツールページ

タイトル 分類 Description Company
iSim オンライン設計/シミュレーションツール Simulator iSim Personal Edition(iSim:PE)は、プロジェクトの早い段階で設計サイクルを加速しリスクを低減し、現在および次世代の設計で使用できる部品を特定します。 Renesas

memoryボード&キット

製品名 タイトル 分類 Company
ISL9440CEVAL1Z Triple, 180° Out-of-Phase, Step-Down PWM and Single Linear Controller Evaluation Board Evaluation Renesas
ISL9440EVAL2Z Triple, 180° Out-of-Phase, Step-Down PWM and Single Linear Controller Evaluation Board Evaluation Renesas