The ISL70005SEH is radiation hardened dual output Point-of-Load (POL) regulator combining the high efficiency of a synchronous buck regulator with the low noise of a Low Dropout (LDO) regulator. They are suited for systems with 3.3V or 5V power buses and can support continuous output load currents of 3A for the buck regulator and ±1A for the LDO. The buck regulator uses a voltage mode control architecture and switches at a resistor adjustable frequency of 100kHz to 1MHz. Externally adjustable loop compensation allows for an optimum balance between stability and output dynamic performance. The internal synchronous power switches are optimized for high efficiency and excellent thermal performance. The LDO is completely configurable independent of the switching regulator. It uses NMOS pass devices and separate chip bias voltage (L_VCC) to drive its gate, enabling the LDO to operate with a very low voltage at the L_VIN input. The LDO can sink and source up to 1A continuously, making it an ideal choice to power DDR memory. The ISL70005SEH is available in a space-saving 28 Ld ceramic dual flat-pack package or in die form. It is specified to operate across a temperature range of TA = -55 °C to +125 °C.


  • Dual output regulator: Sync buck and LDO
  • Independent EN, SS and PG indicators
  • ±1% reference voltage
  • 1A current sourcing/sinking capability on LDO
  • External clock synchronization: 100kHz to 1MHz
  • Full military temperature range operation
    • TA = -55 °C to +125 °C
    • TJ = -55 °C to +150 °C
  • Radiation acceptance testing - ISL70005SEH
    • HDR (50-300rad(Si)/s): 100krad(Si)
    • LDR (0.01rad(Si)/s): 75krad(Si)
  • SEE hardness (see test report)
    • No SEB or SEL at LET 86.4MeV•cm2/mg
    • SET at LET 86.4MeV•cm2/mg <±3% ΔVOUT
    • No SEFI at LET 43MeV•cm2/mg
  • Electrically screened to DLA SMD 5962-19209


  • Point-of-load for low power FPGA core
  • Auxiliary and I/O supply voltages
  • DDR memory power for VDDQ and VTT rails
  • Distributed power system of satellite payloads

Product Options

Part Number Part Status Pkg. Type Carrier Type DLA SMD Buy Sample
Active CFP Tray
Active CFP Tray 5962R1920901VXC
Active 5962R1920901V9A
Active DIE 5962R1920901V9A


Title language Type Format File Size Date
Datasheets & Errata
ISL70005SEH, ISL73005SEH Datasheet Datasheet PDF 1.40 MB
User Guides & Manuals
ISL70005SEHDEMO1Z User's Manual Manual PDF 1024 KB
ISL70005SEHEV2Z User's Manual Manual PDF 1.20 MB
Application Notes & White Papers
R34AN0002EU: ISL70005SEH iSim:PE Model vs Silicon Application Report Application Note PDF 2.79 MB
AN9867: End of Life Derating: A Necessity or Overkill Application Note PDF 338 KB
Wafer by Wafer Low Dose Rate Acceptance White Paper White Paper PDF 533 KB
Intersil Space Products Brochure Brochure PDF 3.14 MB
Standard Microcircuit Drawing 5962-19209 (ISL73005SEH, ISL70005SEH) Other 0 KB
PA20002 - Correction to the Renesas ISL70005SEH and ISL73005SEH Datasheets Product Advisory PDF 206 KB
ISL70005SEH Total Dose Test Report Report PDF 461 KB
ISL70005SEH SEE Test Report Report PDF 1.69 MB
ISL70005SEH DDR Tracking iSim:PE Model Schematic SXSCH 553 KB
ISL70005SEH FPGA Bode iSim:PE Model Schematic SXSCH 542 KB
ISL70005SEH FPGA Load Step iSim:PE Model Schematic SXSCH 541 KB


Title language Type Format File Size Date
ISL70005SEHDEMO1Z Design Files Design File ZIP 1.06 MB
ISL70005SEHEV2Z Design Files Design File ZIP 2.01 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
ISL70005SEHDEMO1Z Rad Hard, Dual Output Point-of-Load, Integrated Synchronous Buck and LDO Demonstration Board Demonstration Renesas
ISL70005SEHEV2Z Rad Hard, Dual Output Point-of-Load, Integrated Synchronous Buck and LDO Evaluation Board Evaluation Renesas
ISLRTG4DEMO1Z Renesas Radiation Hardened Power Solution for RTG4 FPGA Demonstration Renesas

News & Additional Resources

Type Date Sort ascending
Low Dose Rate Acceptance Testing Page Mar 25, 2020
Standard Data Package Page Mar 19, 2020
Rad Hard SMD Test Flow Page Mar 19, 2020
Rad Hard Test Reports Page Mar 19, 2020