The IS-1845ASRH, IS-1845ASEH are designed to be used in switching power supplies operating in current-mode. The rising edge of the on-chip oscillator turns on the output. Turn-off is controlled by the current sense comparator and occurs when the sensed current reaches a peak controlled by the error amplifier. Constructed with Renesas' Rad Hard Silicon Gate (RSG) dielectrically isolated BiCMOS process, these devices are immune to single event latch-up and have been specifically designed to provide a high level of immunity to single event transients. All specified parameters are ensured and tested for 300krad(Si) total dose performance at a high dose rate and 50krad(Si) total dose at a low dose rate. Detailed Electrical Specifications for these devices are contained in the SMD 5962-01509.


  • Electrically screened to DSCC SMD # 5962-01509
  • QML qualified per MIL-PRF-38535 requirements
  • Radiation environment
    • High Dose Rate: 300krad(SI) (Max)
    • Low Dose Rate: 50krad(SI) (Max)
    • SEL immune: Dielectrically isolated
    • SEU immune: 35MeV/mg/cm2
    • SEU cross-section at 89MeV/mg/cm2: 5x10-6cm2
  • Low start-up current: 100µA (Typ)
  • Fast propagation delay: 80ns (Typ)
  • Supply voltage range: 12V to 20V
  • High output drive: 1A (Peak, Typ)
  • Undervoltage lockout: 8.8V start (Typ), 8.2V stop (Typ)


  • Current-mode switching power supplies
  • Control of high current FET drivers
  • Motor speed and direction control

Product Options

Part Number Part Status Pkg. Type Carrier Type MOQ DLA SMD Buy Sample
Active 100 5962F0150902V9A
Active SBDIP Tray 1 5962F0150902VPC
Active CFP Tray 1 5962F0150902VXC

Documentation & Downloads

Title language Type Format File Size Date
Datasheets & Errata
IS-1845ASRH, IS-1845ASEH Datasheet Datasheet PDF 201 KB
Application Notes & White Papers
Wafer by Wafer Low Dose Rate Acceptance White Paper White Paper PDF 533 KB
AN9867: End of Life Derating: A Necessity or Overkill Application Note PDF 338 KB
Intersil Space Products Brochure Brochure PDF 3.14 MB
PIN19011 - Price Increase for the Listed Renesas Electronics America (REA) Radiation Hardened Space Products Price Increase Notice PDF 360 KB
Standard Microcircuit Drawing 5962-01509 (IS-1845ASEH, IS-1845ASRH) Other 0 KB
IS-1845ASRH Neutron Test Report Report PDF 329 KB
Intersil Commercial Lab Services Brochure PDF 364 KB
IS-1845ASRH Total Dose Test Report Report PDF 370 KB
IS-1845ASRH SEE Test Report Report PDF 118 KB
TB393: Disabling the Output of the IS-1845ASRH Other PDF 141 KB

News & Additional Resources