The ISL71001M is a radiation tolerant and high efficiency monolithic synchronous buck regulator with integrated MOSFETs. This single-chip power solution operates across an input voltage range of 3V to 5. 5V and provides a tightly regulated output voltage that is externally adjustable from 0. 8V to ~85% of the input voltage with an output load current capacity of 6A. The ISL71001M is available in a plastic 64 Ld Thin Quad Flatpack (EP-TQFP) package. The ISL71001M uses peak current-mode control for excellent output load transient response and features integrated compensation and switches at a fixed frequency of 1MHz to reduce component size and count. In applications where two regulators are needed, two ISL71001M devices can be synchronized 180° out-of-phase to reduce the overall input RMS ripple current. The internal synchronous power switches are optimized for high efficiency and good thermal performance. The ISL71001M incorporates fault protection for the regulator. The protection circuits include input undervoltage, output undervoltage, and output overcurrent. High integration makes the ISL71001M an ideal choice to power many of today’s small form factor applications. Two devices can be synchronized to provide a complete power solution for large scale digital ICs, like Field Programmable Gate Arrays (FPGAs), that require separate core and I/O voltages.


  • Passes NASA low outgassing specifications
  • Operates from 3V to 5.5V supply
  • Programmable power-on reset level
  • Current mode control for excellent dynamic response
  • Fixed 1MHz switching frequency
  • ±1.2% reference voltage
  • Thermally enhanced heat-sink plastic package
  • Highly efficient: 95% peak efficiency
  • Bidirectional SYNC pin allows two devices to be synchronized 180° out-of-phase
  • Adjustable output voltage
  • Analog soft-start
  • Output undervoltage and output overcurrent protection
  • Power-good output voltage monitor
  • Tin (Sn) free lead finish
  • Characterized radiation level
    • 30krad(Si) at a low dose rate
    • Single-event effects at LET = 43MeV•cm2/mg


  • FPGA
  • CPLD
  • DSP
  • CPU Core
  • Or I/O voltages
  • Low-voltage
  • High-density distributed power systems
  • Low Earth Orbit (LEO) applications
  • High altitude avionics
  • Launch vehicles


Title language Type Format File Size Date
Datasheets & Errata
star ISL71001M Datasheet Datasheet PDF 1021 KB
User Guides & Manuals
ISL71001MEVAL1Z User Guide Manual - Development Tools PDF 1.23 MB
Application Notes & White Papers
Powering Small Satellite Constellations with Plastic ICs White Paper PDF 405 KB
AN9867: End of Life Derating: A Necessity or Overkill Application Note PDF 338 KB
Intersil Space Products Brochure Brochure PDF 3.16 MB
Intersil Commercial Lab Services Brochure PDF 364 KB


Title language Type Format File Size Date
ISL71001M, ISL70001ASEH iSim:PE Model Model - Other SXSCH 414 KB
ISL71001MEVAL1Z Design Files PCB Design Files ZIP 955 KB

memoryBoards & Kits

Part Number Title Type Company
ISL71001MEVAL1Z 6A Rad Tolerant/Hardened Synchronous Buck Regulator with Integrated MOSFETs Evaluation Board Evaluation Renesas

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