The ISL85415 is a 500mA synchronous buck regulator with an input range of 3V to 36V. The device provides an easy-to-use high-efficiency, low BOM-count solution for a variety of applications. The ISL85415 integrates both high-side and low-side NMOS FET's and features a PFM mode for improved efficiency at light loads. The feature can be disabled if forced PWM mode is desired. The device switches at a default frequency of 500kHz, but can also be programmed using an external resistor from 300kHz to 2MHz. The ISL85415 has the ability to use internal or external compensation. By integrating both NMOS devices and providing internal configuration options, minimal external components are required, reducing both the 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 provides a very robust design for high-voltage Industrial applications and delivers an efficient solution for battery powered applications. The ISL85415 is available in a small Pb-free 4mmx3mm DFN plastic package with an operation temperature range of -40°C to +125°C.

Features

  • Wide input voltage range 3V to 36V
  • 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 fixed (500kHz) or adjustable switching frequency 300kHz to 2MHz
  • Continuous output current up to 500mA
  • Internal or external soft-start
  • Minimal external components required
  • Power-good and enable functions available

Applications

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

Product Options

Part Number Part Status Pkg. Type Carrier Type MOQ Buy Sample
Active DFN Tube 75
Availability
Active DFN Reel 6000
Availability
Active DFN Reel 250
Availability

Documentation & Downloads

Title Other Languages Type Format File Size Date
Datasheets & Errata
ISL85415 Datasheet 日本語 Datasheet PDF 2.35 MB
User Guides & Manuals
ISLUSPLUS-UC2DEMO1Z User Guide Manual PDF 1.82 MB
ISLUSPLUS-UC1DEMO1Z User Guide Manual PDF 1.55 MB
ISL85415DEMO2Z User Guide Manual PDF 883 KB
ISL85415EVAL2Z User Guide Manual PDF 876 KB
ISL85415DEMO1Z User Guide Manual PDF 955 KB
ISL85415EVAL1Z User Guide Manual PDF 1.04 MB
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
Power Management Solutions for Modern Electronic Devices 简体中文 White Paper PDF 337 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
PCN19016 - Product Improvement - Design Change for the Listed Renesas ISL85415FRZ* Products Product Change Notice PDF 109 KB
Downloads
ISLUSPLUS-UC2DEMO1Z Design Files Design File ZIP 1.89 MB
ISLUSPLUS-UC1DEMO1Z Design Files Design File ZIP 1.80 MB
ISL85415EVAL2Z Design Files Design File ZIP 823 KB
ISL85415EVAL1Z Design Files Design File ZIP 911 KB
ISL85415DEMO1Z Design Files Design File ZIP 541 KB
ISL85415DEMO2Z Design Files Design File ZIP 801 KB
Other
ISL85415 iSim:PE Model Schematic SXSCH 128 KB
Motor Solution Brochure 日本語 Brochure PDF 4.54 MB

Software & Tool Pages

Title Type Description Company
iSim:PE Offline Simulation Tool Simulator iSim Personal Edition (iSim:PE) speeds the design cycle and reduces risk early in any project, identifying parts that can be used in current as well as next-generation designs. Renesas

Boards & Kits

Part Number Title Type Company
ISL85410DEMO1Z 1A, 800mA, 500mA Synchronous Buck Regulator Demonstration Boards Demonstration Renesas
ISL85410EVAL1Z Wide VIN 1A, 800mA or 500mA Synchronous Buck Regulator Evaluation Board Evaluation Renesas
ISL85415DEMO1Z 1A, 800mA, 500mA Synchronous Buck Regulator Demonstration Boards Demonstration Renesas
ISL85415DEMO2Z 1A, 800mA, 500mA Synchronous Buck Regulator Demonstration Boards Demonstration Renesas
ISL85415EVAL1Z Wide VIN 1A, 800mA or 500mA Synchronous Buck Regulator Evaluation Board Evaluation Renesas
ISL85415EVAL2Z Wide VIN 1A, 800mA or 500mA Synchronous Buck Regulator Evaluation Board Evaluation Renesas
ISL85418DEMO1Z 1A, 800mA, 500mA Synchronous Buck Regulator Demonstration Boards Demonstration Renesas
ISL85418EVAL1Z Wide VIN 1A, 800mA or 500mA Synchronous Buck Regulator 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