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.

Features

  • 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

Applications

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

tuneProduct Options

Part Number Part Status Pkg. Type Carrier Type MOQ Buy Sample
Active TDFN Tube 100
Availability
Active TDFN Reel 6000
Availability
Active TDFN Reel 250
Availability

descriptionDocumentation

Title language Type Format File Size Date
Datasheets & Errata
star ISL85412 Datasheet Datasheet PDF 1.31 MB
User Guides & Manuals
ISLUSPLUS-UC1DEMO1Z User Guide Manual - Development Tools PDF 1.55 MB
ISLUSPLUS-UC2DEMO1Z User Guide Manual - Development Tools PDF 1.82 MB
ISL85413DEMO1Z, ISL85412DEMO1Z User Guide Manual - Development Tools PDF 318 KB
ISL85413EVAL1Z, ISL85412EVAL1Z User Guide Manual - Development Tools PDF 800 KB
Application Notes & White Papers
Doing More with Buck Regulator ICs White Paper PDF 1.07 MB
How to Reconfigure a Buck Converter for Multiple Outputs White Paper PDF 468 KB
Five Easy Steps to Create a Multi-Load Power Solution White Paper PDF 846 KB
AN9208: High Frequency Power Converters Application Note PDF 592 KB
AN1965: Effectively Using the Intersil Small Form Factor Power Management Evaluation Boards Application Note PDF 2.35 MB
AN1681: Grounding Techniques Application Note PDF 509 KB
AN1684: Nonideality of Ground Application Note PDF 397 KB
AN9210: A New Pspice Subcircuit For The Power MOSFET Featuring Global Temperature Options Application Note PDF 650 KB
AN9209: A Spice-2 Subcircuit Representation For Power MOSFETs Using Empirical Methods Application Note PDF 387 KB
AN7244: Understanding Power MOSFETs Application Note PDF 349 KB
PCNs & PDNs
PCN20029A - Alternate bond wire material and assembly facility of the listed Renesas QFN packaged products Product Change Notice PDF 327 KB

file_downloadDownloads

Title language Type Format File Size Date
Hardware
ISLUSPLUS-UC1DEMO1Z Design Files PCB Design Files ZIP 1.80 MB
ISLUSPLUS-UC2DEMO1Z Design Files PCB Design Files ZIP 1.89 MB
ISL85412DEMO1Z Design Files PCB Design Files ZIP 883 KB

memoryBoards & Kits

Part Number Title Type Company
ISL85412DEMO1Z 300mA, 150mA Synchronous Buck Regulator Demonstration Boards Demonstration Renesas
ISL85412EVAL1Z Wide VIN 150mA/300mA Synchronous Buck Regulators Evaluation Board Evaluation Renesas
ISL85413DEMO1Z 300mA, 150mA Synchronous Buck Regulator Demonstration Boards Demonstration Renesas
ISL85413EVAL1Z 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