The ISL75052SEH and ISL73052SEH are radiation hardened, single output LDOs specified for an output current of 1.5A. The devices operate from an input voltage range of 4.0V to 13.2V and provide for output voltages of 0.6V to 12.7V. The output is adjustable based on a resistor divider setting. Dropout voltages as low as 75mV (at 0.5A) typical can be realized using the devices. This allows you to improve the system efficiency by lowering VIN to nearly VOUT. The ENABLE feature allows the part to be placed into a low shutdown current mode of 165µA (typical). When enabled, the device operates with a low ground current of 11mA (typical), which provides for operation with low quiescent power consumption. These devices have superior transient response and are designed keeping single event effects in mind. This results in reduction of the magnitude of SET seen on the output. There is no need for additional protection diodes and filters. A COMP pin is provided to enable the use of external compensation. This is achieved by connecting a resistor and capacitor from COMP to ground. The device is stable with tantalum capacitors as low as 47µF (KEMET T525 series) and provides excellent regulation all the way from no load to full load. The programmable soft-start allows you to program the inrush current by means of the decoupling capacitor used on the BYP pin. The OCP pin allows the short-circuit output current limit threshold to be programmed by means of a resistor from OCP pin to GND. The OCP setting range is from 0.16A minimum to 3.2A maximum. The resistor sets the constant current threshold for the output under fault conditions. The thermal shutdown disables the output if the device temperature exceeds the specified value. It subsequently enters an ON/OFF cycle until the fault is removed.


  • DLA SMD 5962-13220
  • Input supply range 4.0V to 13.2V
  • Output current up to 1.5A at TJ = +150 °C
  • Best in class accuracy ±1.5%
    • Over line, load, and temperature
  • Ultra-low dropout:
    • 75mV dropout (typical) at 0.5A
    • 225mV dropout (typical) at 1.5A
  • Noise of 100µVRMS (typical) between 300Hz to 300kHz
  • SET mitigation with no added filtering/diodes
  • Shutdown current of 165µA (typical)
  • Externally adjustable output voltage
  • PSRR 65dB (typical) at 1kHz
  • ENable and PGood feature
  • Programmable soft-start/inrush current limiting
  • Adjustable overcurrent protection
  • Over-temperature shutdown
  • Stable with 47µF minimum tantalum capacitor
  • 16 Ld flatpack package
  • Radiation environment
    • High dose rate (50-300rad(Si)/s): 100krad(Si)
      (ISL75052SEH only)
    • Low dose rate (0.01rad(Si)/s): 50krad(Si)*
    • SET/SEL/SEB: 86MeV•cm2/mg
      *See TID report for further characterization details.


  • LDO regulator for space power systems
  • DSP, FPGA and µP core power supplies
  • Post regulation of SMPS and down-hole drilling

tuneProduct Options

Part Number Part Status Pkg. Type Carrier Type MOQ DLA SMD Buy Sample
Active CFP Tray 1
Active CFP Tray 1 5962R1322001VXC
Active 100 5962R1322001V9A
Active DIE 5


Title language Type Format File Size Date
Datasheets & Errata
star ISL75052SEH, ISL73052SEH Datasheet Datasheet PDF 1004 KB
Application Notes & White Papers
Wafer by Wafer Low Dose Rate Acceptance White Paper White Paper PDF 533 KB
AN1878: ISL75052SEH and ISL73052SEH PSPICE Macro-Model Application Note PDF 394 KB
AN9867: End of Life Derating: A Necessity or Overkill Application Note PDF 338 KB
Intersil Space Products Brochure Brochure PDF 3.12 MB
PIN19011 - Price Increase for the Listed Renesas Electronics America (REA) Radiation Hardened Space Products Price Increase Notice PDF 360 KB
ISL75052SEH and ISL73052SEH Total Dose Test Report Report PDF 511 KB
Standard Microcircuit Drawing 5962-13220 (ISL75052SEH, ISL73052SEH) Other 0 KB
ISL75052SEH and ISL73052SEH Neutron Test Report Report PDF 425 KB
Intersil Commercial Lab Services Brochure PDF 364 KB
TB499: PCB Thermal Land Design for Ceramic Packages with Bottom Metal or Heat Sinks Technical Brief PDF 410 KB
ISL75052SEH and ISL73052SEH SEE Test Report Report PDF 644 KB


Title language Type Format File Size Date
ISL75052SEH and ISL73052SEH PSPICE Model Model - Other ZIP 9 KB

memoryBoards & Kits

Part Number Title Type Company
ISL75052SEHEVAL1Z Radiation Hardened, 1.5A, Positive, High Voltage LDO Evaluation Board Evaluation Renesas

printNews & 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