The ISL85412 is a 150mA synchronous buck regulator with an input range of 3. 5V to 40V. It provides an easy to use, high efficiency low BOM count solution for a variety of applications. The ISL85412 integrates both high-side and low-side NMOS FETs and features a PFM mode for improved efficiency at light loads. This feature can be disabled if forced PWM mode is desired. The part switches at a default frequency of 700kHz. By integrating both NMOS devices and providing internal configuration, minimal external components are required, reducing BOM count and complexity of design. With the wide VIN range and reduced BOM, the part provides an easy to implement design solution for a variety of applications while giving superior performance. It will provide a very robust design for high voltage industrial applications as well as an efficient solution for battery powered applications. The part is available in a small Pb-free 3mmx3mm TDFN plastic package with an operation junction temperature range of -40°C to +125°C.


  • Wide input voltage range of 3.5V to 40V
  • Synchronous operation for high efficiency
  • No compensation required
  • Integrated high-side and low-side NMOS devices
  • Selectable PFM or forced PWM mode at light loads
  • Internal switching frequency 700kHz
  • Continuous output current up to 150mA
  • Internal soft-start
  • Minimal external components required
  • Power-good and enable functions available


  • Industrial control
  • Medical devices
  • Portable instrumentation
  • Distributed power supplies
  • Cloud infrastructure


タイトル language 分類 形式 サイズ 日付
star ISL85412 Datasheet データシート PDF 1.31 MB
AN9208: High Frequency Power Converters アプリケーションノート PDF 592 KB
AN1965: Effectively Using the Intersil Small Form Factor Power Management Evaluation Boards アプリケーションノート PDF 2.35 MB
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
AN9210: A New Pspice Subcircuit For The Power MOSFET Featuring Global Temperature Options アプリケーションノート PDF 650 KB
AN9209: A Spice-2 Subcircuit Representation For Power MOSFETs Using Empirical Methods アプリケーションノート PDF 387 KB
AN7244: Understanding Power MOSFETs アプリケーションノート PDF 349 KB
電力線通信 & Sub-G無線通信ソリューション カタログ カタログ PDF 3.87 MB
ISLUSPLUS-UC1DEMO1Z User Guide マニュアル-開発ツール PDF 1.55 MB
ISLUSPLUS-UC2DEMO1Z User Guide マニュアル-開発ツール PDF 1.82 MB
PCN20029A - Alternate bond wire material and assembly facility of the listed Renesas QFN packaged products 製品変更通知 PDF 326 KB
Doing More with Buck Regulator ICs ホワイトペーパー PDF 1.07 MB
How to Reconfigure a Buck Converter for Multiple Outputs ホワイトペーパー PDF 468 KB
Five Easy Steps to Create a Multi-Load Power Solution ホワイトペーパー PDF 846 KB


タイトル language 分類 形式 サイズ 日付
ISLUSPLUS-UC1DEMO1Z Design Files PCB設計ファイル ZIP 1.80 MB
ISLUSPLUS-UC2DEMO1Z Design Files PCB設計ファイル ZIP 1.89 MB


製品名 タイトル 分類 会社名
ISL85412DEMO1Z 150mA Synchronous Buck Regulator Demonstration Board Demonstration Renesas
ISL85412EVAL1Z Wide VIN 150mA/300mA Synchronous Buck Regulators Evaluation Board Evaluation Renesas
ISLUSPLUS-UC1DEMO1Z Power Supply Reference Demo Board for the Xilinx Zynq Ultrascale+™ MPSoC Demonstration Renesas
ISLUSPLUS-UC2DEMO1Z Power Supply Reference Demo Board for the Xilinx Zynq Ultrascale+™ MPSoC Demonstration Renesas