The ISL97656 is a high frequency, high efficiency step-up voltage regulator operated at constant frequency PWM mode. With an internal 4. 0A, 120mΩ MOSFET, it can deliver up to 2A output current at over 90% efficiency. The selectable 640kHz and 1. 2MHz allows smaller inductors and faster transient response. An external compensation pin gives the user greater flexibility in setting frequency compensation allowing the use of low ESR Ceramic output capacitors. When shut down, it draws


  • >90% Efficiency
  • 4.0A, 120mΩ Power MOSFET
  • 2.3V to 6.0V Input
  • 1.1*VIN to 25V Output
  • 640kHz/1.2MHz Switching Frequency Selection
  • Adjustable Soft-Start
  • Internal Thermal Protection
  • 0.8mm Max Height 10 Ld TDFN Package
  • Pb-Free (RoHS Compliant)
  • Halogen Free


  • TFT-LCD Displays
  • DSL Modems
  • PCMCIA Cards
  • Digital Cameras
  • GSM/CDMA Phones
  • Portable Equipment
  • Handheld Devices

Product Options

Part Number Part Status Pkg. Type Carrier Type MOQ Buy Sample
Active TDFN Tube 100
Active TDFN Reel 6000
Active TDFN Reel 1000

Documentation & Downloads

Title language Type Format File Size Date
Datasheets & Errata
ISL97656 Datasheet Datasheet PDF 654 KB
User Guides & Manuals
ISL97656IRTZEVALZ User Guide Manual PDF 326 KB
Application Notes & White Papers
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
AN1379: ISL97656 SEPIC for 3VIN to 12VIN to 3.3VOUT at 1A Application Application Note PDF 409 KB
AN1684: Nonideality of Ground Application Note PDF 397 KB
AN1681: Grounding Techniques Application Note PDF 509 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
PCN21005 - Alternate assembly facility of the listed Renesas DFN / QFN / TDFN / TQFN packaged products Product Change Notice PDF 158 KB
PCN15046 - Wafer Fabrication Site Change for Listed Intersil Products - Global Foundry P6 Process transfer to Palm Bay - Phase II Product Change Notice PDF 398 KB
PCN13038A - Alternate Bond Wire Material for Assembly of the Listed Intersil DFN/QFN Packaged Products - removal of select products Product Change Notice PDF 299 KB
PCN10089 - Alternate Manufacturing Site for Intersil Product ISL97656* - STATS ChipPAC Malaysia Product Change Notice PDF 34 KB
PCN10055 - Alternate Bond Wire Material for Assembly of the Listed Intersil DFN/QFN Packaged Products - STATS ChipPAC Malaysia Product Change Notice PDF 248 KB
ISL97656IRTZEVALZ Design Files Design File ZIP 65 KB
ISL97656 iSim:PE Model Schematic SXSCH 101 KB

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
ISL97656IRTZEVALZ Integrated 4A Switch PWM Step-Up Regulator Evaluation Board Evaluation Renesas